Current Protein Identity：P09012
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| UNP | PDB | Protein and construct | Assembly | Composition class | Protein state | Molecular copy count | PDB declaration | Consistency status |
|---|---|---|---|---|---|---|---|---|
| P09012 | 1aud | U1A 102 Author chain A Reference sequence 2–102 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1drz | PROTEIN (U1 SMALL RIBONUCLEOPROTEIN A) Author chain A Reference sequence 2–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1dz5 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 2–102 | 1 | Protein–RNA | Homooligomer | Protein 2 RNA 2 | tetrameric （4） | Consistent with all polymers |
| P09012 | 1dz5 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 2–102 | 1 | Protein–RNA | Homooligomer | Protein 2 RNA 2 | tetrameric （4） | Consistent with all polymers |
| P09012 | 1fht | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 2–117 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 1m5k | PROTEIN (U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A) Author chain C Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 1m5k | PROTEIN (U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A) Author chain F Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 1m5k | PROTEIN (U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A) Author chain C Reference sequence 1–100 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 1m5k | PROTEIN (U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A) Author chain F Reference sequence 1–100 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 1m5o | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 1m5o | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain F Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 1m5o | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 1–100 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 1m5o | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain F Reference sequence 1–100 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 1m5p | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 3 | tetrameric （4） | Consistent with all polymers |
| P09012 | 1m5p | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain F Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 3 | tetrameric （4） | Consistent with all polymers |
| P09012 | 1m5p | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 1–100 | 2 | Protein–RNA | Monomer | Protein 1 RNA 3 | tetrameric （4） | Consistent with all polymers |
| P09012 | 1m5p | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain F Reference sequence 1–100 | 2 | Protein–RNA | Monomer | Protein 1 RNA 3 | tetrameric （4） | Consistent with all polymers |
| P09012 | 1m5v | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 3 | tetrameric （4） | Consistent with all polymers |
| P09012 | 1m5v | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain F Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 3 | tetrameric （4） | Consistent with all polymers |
| P09012 | 1m5v | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 1–100 | 2 | Protein–RNA | Monomer | Protein 1 RNA 3 | tetrameric （4） | Consistent with all polymers |
| P09012 | 1m5v | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain F Reference sequence 1–100 | 2 | Protein–RNA | Monomer | Protein 1 RNA 3 | tetrameric （4） | Consistent with all polymers |
| P09012 | 1nu4 | U1A RNA binding domain Author chain A Reference sequence 2–98 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 1nu4 | U1A RNA binding domain Author chain B Reference sequence 2–98 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 1nu4 | U1A RNA binding domain Author chain A Reference sequence 2–98 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 1nu4 | U1A RNA binding domain Author chain B Reference sequence 2–98 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 1nu4 | U1A RNA binding domain Author chain A Reference sequence 2–98 | 3 | Protein homooligomer | Homooligomer | Protein 6 | hexameric （6） | Consistent with protein count |
| P09012 | 1nu4 | U1A RNA binding domain Author chain B Reference sequence 2–98 | 3 | Protein homooligomer | Homooligomer | Protein 6 | hexameric （6） | Consistent with protein count |
| P09012 | 1nu4 | U1A RNA binding domain Author chain A Reference sequence 2–98 | 4 | Protein homooligomer | Homooligomer | Protein 3 | trimeric （3） | Consistent with protein count |
| P09012 | 1nu4 | U1A RNA binding domain Author chain B Reference sequence 2–98 | 4 | Protein homooligomer | Homooligomer | Protein 3 | trimeric （3） | Consistent with protein count |
| P09012 | 1nu4 | U1A RNA binding domain Author chain A Reference sequence 2–98 | 5 | Protein homooligomer | Homooligomer | Protein 3 | trimeric （3） | Consistent with protein count |
| P09012 | 1nu4 | U1A RNA binding domain Author chain B Reference sequence 2–98 | 5 | Protein homooligomer | Homooligomer | Protein 3 | trimeric （3） | Consistent with protein count |
| P09012 | 1nu4 | U1A RNA binding domain Author chain A Reference sequence 2–98 | 6 | Protein homooligomer | Homooligomer | Protein 2 | dimeric （2） | Consistent with protein count |
| P09012 | 1nu4 | U1A RNA binding domain Author chain B Reference sequence 2–98 | 6 | Protein homooligomer | Homooligomer | Protein 2 | dimeric （2） | Consistent with protein count |
| P09012 | 1nu4 | U1A RNA binding domain Author chain A Reference sequence 2–98 | 7 | Protein homooligomer | Homooligomer | Protein 2 | dimeric （2） | Consistent with protein count |
| P09012 | 1nu4 | U1A RNA binding domain Author chain B Reference sequence 2–98 | 7 | Protein homooligomer | Homooligomer | Protein 2 | dimeric （2） | Consistent with protein count |
| P09012 | 1oia | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 1–95 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 1oia | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 1–95 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 1oia | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 1–95 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 1oia | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 1–95 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 1sj3 | small nuclear ribonucleoprotein A Author chain P Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1sj4 | small nuclear ribonucleoprotein A Author chain P Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1sjf | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1u6b | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 3 | tetrameric （4） | Consistent with all polymers |
| P09012 | 1urn | PROTEIN (U1A) Author chain A Reference sequence 2–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1urn | PROTEIN (U1A) Author chain B Reference sequence 2–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1urn | PROTEIN (U1A) Author chain C Reference sequence 2–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1urn | PROTEIN (U1A) Author chain A Reference sequence 2–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1urn | PROTEIN (U1A) Author chain B Reference sequence 2–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1urn | PROTEIN (U1A) Author chain C Reference sequence 2–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1urn | PROTEIN (U1A) Author chain A Reference sequence 2–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1urn | PROTEIN (U1A) Author chain B Reference sequence 2–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1urn | PROTEIN (U1A) Author chain C Reference sequence 2–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1vbx | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1vby | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1vbz | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1vc0 | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1vc5 | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1vc6 | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 1zzn | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A RNA BINDING DOMAIN Author chain A Reference sequence 1–97 | 1 | Protein–RNA | Monomer | Protein 1 RNA 3 | tetrameric （4） | Consistent with all polymers |
| P09012 | 2a3j | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 3–80 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain A Reference sequence 4–97 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain B Reference sequence 4–97 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain C Reference sequence 4–97 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain D Reference sequence 4–97 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain A Reference sequence 4–97 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain B Reference sequence 4–97 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain C Reference sequence 4–97 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain D Reference sequence 4–97 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain A Reference sequence 4–97 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain B Reference sequence 4–97 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain C Reference sequence 4–97 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain D Reference sequence 4–97 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain A Reference sequence 4–97 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain B Reference sequence 4–97 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain C Reference sequence 4–97 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2nz4 | U1 Small Nuclear Ribonucleoprotein A Author chain D Reference sequence 4–97 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 2oih | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–99 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 2oj3 | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–99 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 2u1a | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 195–282 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 3bo2 | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 4–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 4 | pentameric （5） | Consistent with all polymers |
| P09012 | 3bo3 | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 4–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 3 | tetrameric （4） | Consistent with all polymers |
| P09012 | 3bo4 | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 4–98 | 1 | Other combination | Monomer | Protein 1 DNA 2 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 3cul | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3cul | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3cul | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3cul | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3cun | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3cun | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3cun | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3cun | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3egz | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 1 | Protein–RNA | Homooligomer | Protein 4 RNA 4 | octameric （8） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain D Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain D Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain D Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8s | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain D Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g8t | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain D Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain D Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain D Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g96 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain D Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 1–98 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3g9c | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 1–98 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3hhn | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 2 RNA 2 | tetrameric （4） | Consistent with all polymers |
| P09012 | 3hhn | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 2 RNA 2 | tetrameric （4） | Consistent with all polymers |
| P09012 | 3iin | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 4–98 | 1 | Other combination | Monomer | Protein 1 DNA 2 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 3irw | U1 small nuclear ribonucleoprotein A Author chain P Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3iwn | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3iwn | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3iwn | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 6–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3iwn | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 6–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3k0j | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 2–97 | 1 | Protein–RNA | Homooligomer | Protein 2 RNA 1 | trimeric （3） | Consistent with all polymers |
| P09012 | 3k0j | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 2–97 | 1 | Protein–RNA | Homooligomer | Protein 2 RNA 1 | trimeric （3） | Consistent with all polymers |
| P09012 | 3k0j | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 2–97 | 1 | Protein–RNA | Homooligomer | Protein 2 RNA 1 | trimeric （3） | Consistent with all polymers |
| P09012 | 3k0j | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 2–97 | 1 | Protein–RNA | Homooligomer | Protein 2 RNA 1 | trimeric （3） | Consistent with all polymers |
| P09012 | 3k0j | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 2–97 | 2 | Protein–RNA | Homooligomer | Protein 2 RNA 1 | trimeric （3） | Consistent with all polymers |
| P09012 | 3k0j | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 2–97 | 2 | Protein–RNA | Homooligomer | Protein 2 RNA 1 | trimeric （3） | Consistent with all polymers |
| P09012 | 3k0j | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 2–97 | 2 | Protein–RNA | Homooligomer | Protein 2 RNA 1 | trimeric （3） | Consistent with all polymers |
| P09012 | 3k0j | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 2–97 | 2 | Protein–RNA | Homooligomer | Protein 2 RNA 1 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 7–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 7–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 7–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain D Reference sequence 7–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 7–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 7–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 7–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain D Reference sequence 7–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 7–96 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 7–96 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 7–96 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain D Reference sequence 7–96 | 3 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 7–96 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 7–96 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain C Reference sequence 7–96 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3l3c | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain D Reference sequence 7–96 | 4 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3mum | U1 small nuclear ribonucleoprotein A Author chain P Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3mur | U1 small nuclear ribonucleoprotein A Author chain P Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3mut | U1 small nuclear ribonucleoprotein A Author chain P Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3muv | U1 small nuclear ribonucleoprotein A Author chain P Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3mxh | U1 small nuclear ribonucleoprotein A Author chain P Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3p49 | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 3pgw | U1-A Author chain A Reference sequence 1–282 | 1 | Other combination | Heteromer | Protein 9 DNA 1 RNA 1 | undecameric （11） | Consistent with all polymers |
| P09012 | 3pgw | U1-A Author chain P Reference sequence 1–282 | 1 | Other combination | Heteromer | Protein 9 DNA 1 RNA 1 | undecameric （11） | Consistent with all polymers |
| P09012 | 3pgw | U1-A Author chain A Reference sequence 1–282 | 2 | Other combination | Heteromer | Protein 9 DNA 1 RNA 1 | undecameric （11） | Consistent with all polymers |
| P09012 | 3pgw | U1-A Author chain P Reference sequence 1–282 | 2 | Other combination | Heteromer | Protein 9 DNA 1 RNA 1 | undecameric （11） | Consistent with all polymers |
| P09012 | 3r1h | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3r1h | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3r1h | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3r1h | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3r1l | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3r1l | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3r1l | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3r1l | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 1–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3ucu | U1 small nuclear ribonucleoprotein A Author chain P Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3ucz | U1 small nuclear ribonucleoprotein A Author chain P Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3ud3 | U1 small nuclear ribonucleoprotein A Author chain P Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 3ud4 | U1 small nuclear ribonucleoprotein A Author chain P Reference sequence 1–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 2 | trimeric （3） | Consistent with all polymers |
| P09012 | 4c4w | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 1–102 | 1 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 4c4w | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 1–102 | 1 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 4c4w | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain E Reference sequence 1–102 | 1 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 4c4w | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain F Reference sequence 1–102 | 1 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 4c4w | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 1–102 | 2 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 4c4w | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 1–102 | 2 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 4c4w | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain E Reference sequence 1–102 | 2 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 4c4w | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain F Reference sequence 1–102 | 2 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 4pr6 | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 4–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 4prf | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–100 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 4w90 | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 4w92 | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 4yb1 | U1 small nuclear ribonucleoprotein A Author chain P Reference sequence 7–97 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddo | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 2–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddo | U1 small nuclear ribonucleoprotein A Author chain G Reference sequence 2–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddo | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 2–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddo | U1 small nuclear ribonucleoprotein A Author chain G Reference sequence 2–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddp | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 2–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddp | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 2–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddp | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 2–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddp | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 2–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddq | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 2–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddq | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 2–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddq | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 2–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddq | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 2–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddr | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 2–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddr | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 2–98 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddr | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 2–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5ddr | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 2–98 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 5fj4 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 1–102 | 1 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 5fj4 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 1–102 | 1 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 5fj4 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain E Reference sequence 1–102 | 1 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 5fj4 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain F Reference sequence 1–102 | 1 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 5fj4 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain A Reference sequence 1–102 | 2 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 5fj4 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain B Reference sequence 1–102 | 2 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 5fj4 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain E Reference sequence 1–102 | 2 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 5fj4 | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A Author chain F Reference sequence 1–102 | 2 | Protein–RNA | Heteromer | Protein 3 RNA 1 | tetrameric （4） | Consistent with all polymers |
| P09012 | 6las | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6las | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6las | U1 small nuclear ribonucleoprotein A Author chain E Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6las | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 6–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6las | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 6–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6las | U1 small nuclear ribonucleoprotein A Author chain E Reference sequence 6–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6las | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 6–96 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6las | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 6–96 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6las | U1 small nuclear ribonucleoprotein A Author chain E Reference sequence 6–96 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6lau | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6lau | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6lau | U1 small nuclear ribonucleoprotein A Author chain E Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6lau | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 6–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6lau | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 6–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6lau | U1 small nuclear ribonucleoprotein A Author chain E Reference sequence 6–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6lau | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 6–96 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6lau | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 6–96 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6lau | U1 small nuclear ribonucleoprotein A Author chain E Reference sequence 6–96 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6lax | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6lax | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6lax | U1 small nuclear ribonucleoprotein A Author chain E Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6lax | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 6–96 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6lax | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 6–96 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6lax | U1 small nuclear ribonucleoprotein A Author chain E Reference sequence 6–96 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6lax | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 6–96 | 3 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6lax | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 6–96 | 3 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6lax | U1 small nuclear ribonucleoprotein A Author chain E Reference sequence 6–96 | 3 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6laz | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6laz | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6laz | U1 small nuclear ribonucleoprotein A Author chain E Reference sequence 6–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6laz | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 6–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6laz | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 6–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6laz | U1 small nuclear ribonucleoprotein A Author chain E Reference sequence 6–96 | 2 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 6laz | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 6–96 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6laz | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 6–96 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6laz | U1 small nuclear ribonucleoprotein A Author chain E Reference sequence 6–96 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6qx9 | U1 small nuclear ribonucleoprotein A Author chain 1A Reference sequence 1–282 | 1 | Protein–RNA | Heteromer | Protein 65 RNA 6 | 71-meric （71） | Consistent with all polymers |
| P09012 | 6sqn | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 3 RNA 3 | hexameric （6） | Consistent with all polymers |
| P09012 | 6sqn | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 3 RNA 3 | hexameric （6） | Consistent with all polymers |
| P09012 | 6sqn | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 3 RNA 3 | hexameric （6） | Consistent with all polymers |
| P09012 | 6sqq | U1 small nuclear ribonucleoprotein A Author chain AAA Reference sequence 1–98 | 1 | Protein–RNA | Homooligomer | Protein 3 RNA 3 | hexameric （6） | Consistent with all polymers |
| P09012 | 6sqq | U1 small nuclear ribonucleoprotein A Author chain BBB Reference sequence 1–98 | 1 | Protein–RNA | Homooligomer | Protein 3 RNA 3 | hexameric （6） | Consistent with all polymers |
| P09012 | 6sqq | U1 small nuclear ribonucleoprotein A Author chain CCC Reference sequence 1–98 | 1 | Protein–RNA | Homooligomer | Protein 3 RNA 3 | hexameric （6） | Consistent with all polymers |
| P09012 | 6sqt | U1 small nuclear ribonucleoprotein A Author chain AAA Reference sequence 1–98 | 1 | Protein homooligomer | Homooligomer | Protein 3 | trimeric （3） | Consistent with protein count |
| P09012 | 6sqt | U1 small nuclear ribonucleoprotein A Author chain BBB Reference sequence 1–98 | 1 | Protein homooligomer | Homooligomer | Protein 3 | trimeric （3） | Consistent with protein count |
| P09012 | 6sqt | U1 small nuclear ribonucleoprotein A Author chain CCC Reference sequence 1–98 | 1 | Protein homooligomer | Homooligomer | Protein 3 | trimeric （3） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain AAA Reference sequence 1–97 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain BBB Reference sequence 1–97 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain CCC Reference sequence 1–97 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain DDD Reference sequence 1–97 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain AAA Reference sequence 1–97 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain BBB Reference sequence 1–97 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain CCC Reference sequence 1–97 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain DDD Reference sequence 1–97 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain AAA Reference sequence 1–97 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain BBB Reference sequence 1–97 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain CCC Reference sequence 1–97 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain DDD Reference sequence 1–97 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain AAA Reference sequence 1–97 | 4 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain BBB Reference sequence 1–97 | 4 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain CCC Reference sequence 1–97 | 4 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sqv | U1 small nuclear ribonucleoprotein A Author chain DDD Reference sequence 1–97 | 4 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain AAA Reference sequence 1–98 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain BBB Reference sequence 1–98 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain CCC Reference sequence 1–98 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain DDD Reference sequence 1–98 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain AAA Reference sequence 1–98 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain BBB Reference sequence 1–98 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain CCC Reference sequence 1–98 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain DDD Reference sequence 1–98 | 2 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain AAA Reference sequence 1–98 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain BBB Reference sequence 1–98 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain CCC Reference sequence 1–98 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain DDD Reference sequence 1–98 | 3 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain AAA Reference sequence 1–98 | 4 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain BBB Reference sequence 1–98 | 4 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain CCC Reference sequence 1–98 | 4 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 6sr7 | U1 small nuclear ribonucleoprotein A Author chain DDD Reference sequence 1–98 | 4 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 7aep | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 157–282 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 7b0y | U1 small nuclear ribonucleoprotein A Author chain c Reference sequence 1–282 | 1 | Other combination | Heteromer | Protein 21 DNA 2 RNA 2 | 25-meric （25） | Consistent with all polymers |
| P09012 | 7d7v | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 5–96 | 1 | Protein–RNA | Monomer | Protein 1 RNA 1 | dimeric （2） | Consistent with all polymers |
| P09012 | 7dlz | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–102 | 1 | Protein–RNA | Homooligomer | Protein 4 RNA 2 | hexameric （6） | Consistent with all polymers |
| P09012 | 7dlz | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–102 | 1 | Protein–RNA | Homooligomer | Protein 4 RNA 2 | hexameric （6） | Consistent with all polymers |
| P09012 | 7dlz | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 1–102 | 1 | Protein–RNA | Homooligomer | Protein 4 RNA 2 | hexameric （6） | Consistent with all polymers |
| P09012 | 7dlz | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 1–102 | 1 | Protein–RNA | Homooligomer | Protein 4 RNA 2 | hexameric （6） | Consistent with all polymers |
| P09012 | 7dwh | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–102 | 1 | Protein–RNA | Homooligomer | Protein 4 RNA 2 | hexameric （6） | Consistent with all polymers |
| P09012 | 7dwh | U1 small nuclear ribonucleoprotein A Author chain B Reference sequence 1–102 | 1 | Protein–RNA | Homooligomer | Protein 4 RNA 2 | hexameric （6） | Consistent with all polymers |
| P09012 | 7dwh | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 1–102 | 1 | Protein–RNA | Homooligomer | Protein 4 RNA 2 | hexameric （6） | Consistent with all polymers |
| P09012 | 7dwh | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 1–102 | 1 | Protein–RNA | Homooligomer | Protein 4 RNA 2 | hexameric （6） | Consistent with all polymers |
| P09012 | 7lhx | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 1–98 | 1 | Protein monomer | Monomer | Protein 1 | monomeric （1） | Consistent with protein count |
| P09012 | 7vpx | U1 small nuclear ribonucleoprotein A Author chain M Reference sequence 1–282 | 1 | Protein–RNA | Heteromer | Protein 31 RNA 4 | 35-meric （35） | Consistent with all polymers |
| P09012 | 8gxb | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 5 RNA 2 | heptameric （7） | Consistent with all polymers |
| P09012 | 8gxb | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 5 RNA 2 | heptameric （7） | Consistent with all polymers |
| P09012 | 8gxb | U1 small nuclear ribonucleoprotein A Author chain E Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 5 RNA 2 | heptameric （7） | Consistent with all polymers |
| P09012 | 8gxb | U1 small nuclear ribonucleoprotein A Author chain F Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 5 RNA 2 | heptameric （7） | Consistent with all polymers |
| P09012 | 8gxb | U1 small nuclear ribonucleoprotein A Author chain G Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 5 RNA 2 | heptameric （7） | Consistent with all polymers |
| P09012 | 8gxc | U1 small nuclear ribonucleoprotein A Author chain C Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 5 RNA 2 | heptameric （7） | Consistent with all polymers |
| P09012 | 8gxc | U1 small nuclear ribonucleoprotein A Author chain D Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 5 RNA 2 | heptameric （7） | Consistent with all polymers |
| P09012 | 8gxc | U1 small nuclear ribonucleoprotein A Author chain E Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 5 RNA 2 | heptameric （7） | Consistent with all polymers |
| P09012 | 8gxc | U1 small nuclear ribonucleoprotein A Author chain F Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 5 RNA 2 | heptameric （7） | Consistent with all polymers |
| P09012 | 8gxc | U1 small nuclear ribonucleoprotein A Author chain G Reference sequence 2–98 | 1 | Protein–RNA | Homooligomer | Protein 5 RNA 2 | heptameric （7） | Consistent with all polymers |
| P09012 | 9qeq | U1 small nuclear ribonucleoprotein A Author chain c Reference sequence 1–282 | 1 | Other combination | Heteromer | Protein 24 DNA 2 RNA 2 | 28-meric （28） | Consistent with all polymers |
| P09012 | 9yxv | U1 small nuclear ribonucleoprotein A Author chain A Reference sequence 2–98 | 1 | Protein–RNA | Heteromer | Protein 6 RNA 1 | heptameric （7） | Consistent with all polymers |