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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：P09661 New Search
50PDB entries
51Biological assembly
53chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
P09661 1a9n U2A' Author chain A Reference sequence 1–176 1 Protein–RNA Heteromer Protein 2 RNA 1 trimeric （3） Consistent with all polymers
P09661 1a9n U2A' Author chain C Reference sequence 1–176 1 Protein–RNA Heteromer Protein 2 RNA 1 trimeric （3） Consistent with all polymers
P09661 1a9n U2A' Author chain A Reference sequence 1–176 2 Protein–RNA Heteromer Protein 2 RNA 1 trimeric （3） Consistent with all polymers
P09661 1a9n U2A' Author chain C Reference sequence 1–176 2 Protein–RNA Heteromer Protein 2 RNA 1 trimeric （3） Consistent with all polymers
P09661 5mqf ;U2 small nuclear ribonucleoprotein A' ; Author chain W Reference sequence 1–255 1 Protein–RNA Heteromer Protein 41 RNA 5 41-meric （41） Consistent with protein count
P09661 5o9z ;U2 small nuclear ribonucleoprotein A' ; Author chain z Reference sequence 1–255 1 Protein–RNA Heteromer Protein 52 RNA 5 57-meric （57） Consistent with all polymers
P09661 5xjc ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 46 RNA 4 50-meric （50） Consistent with all polymers
P09661 5yzg ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 51 RNA 4 55-meric （55） Consistent with all polymers
P09661 5z56 ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 55 RNA 4 59-meric （59） Consistent with all polymers
P09661 5z57 ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 53 RNA 4 57-meric （57） Consistent with all polymers
P09661 5z58 ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 42 RNA 4 46-meric （46） Consistent with all polymers
P09661 6ah0 ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 52 RNA 5 57-meric （57） Consistent with all polymers
P09661 6ahd ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 58 RNA 5 63-meric （63） Consistent with all polymers
P09661 6ff7 ;U2 small nuclear ribonucleoprotein A' ; Author chain W Reference sequence 1–255 1 Protein–RNA Heteromer Protein 57 RNA 4 61-meric （61） Consistent with all polymers
P09661 6icz ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 47 RNA 4 51-meric （51） Consistent with all polymers
P09661 6id0 ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 38 RNA 4 42-meric （42） Consistent with all polymers
P09661 6id1 ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 39 RNA 4 43-meric （43） Consistent with all polymers
P09661 6qdv ;U2 small nuclear ribonucleoprotein A' ; Author chain W Reference sequence 2–163 1 Protein–RNA Heteromer Protein 49 RNA 5 54-meric （54） Consistent with all polymers
P09661 6qx9 ;U2 small nuclear ribonucleoprotein A' ; Author chain 2A Reference sequence 1–255 1 Protein–RNA Heteromer Protein 65 RNA 6 71-meric （71） Consistent with all polymers
P09661 6y53 ;U2 small nuclear ribonucleoprotein A' ; Author chain a Reference sequence 1–255 1 Protein–RNA Heteromer Protein 18 RNA 1 nonadecameric （19） Consistent with all polymers
P09661 6y5q ;U2 small nuclear ribonucleoprotein A' ; Author chain a Reference sequence 1–255 1 Protein–RNA Heteromer Protein 21 RNA 1 22-meric （22） Consistent with all polymers
P09661 7a5p ;U2 small nuclear ribonucleoprotein A' ; Author chain W Reference sequence 1–255 1 Protein–RNA Heteromer Protein 44 RNA 4 48-meric （48） Consistent with all polymers
P09661 7abg ;U2 small nuclear ribonucleoprotein A' ; Author chain W Reference sequence 1–255 1 Protein–RNA Heteromer Protein 54 RNA 4 58-meric （58） Consistent with all polymers
P09661 7abi ;U2 small nuclear ribonucleoprotein A' ; Author chain W Reference sequence 1–255 1 Protein–RNA Heteromer Protein 52 RNA 4 56-meric （56） Consistent with all polymers
P09661 7evo ;U2 small nuclear ribonucleoprotein A' ; Author chain F Reference sequence 1–255 1 Protein–RNA Heteromer Protein 20 RNA 1 21-meric （21） Consistent with all polymers
P09661 7vpx ;U2 small nuclear ribonucleoprotein A' ; Author chain F Reference sequence 1–255 1 Protein–RNA Heteromer Protein 31 RNA 4 35-meric （35） Consistent with all polymers
P09661 7w59 ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 45 RNA 5 50-meric （50） Consistent with all polymers
P09661 7w5a ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 49 RNA 5 54-meric （54） Consistent with all polymers
P09661 7w5b ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 50 RNA 5 55-meric （55） Consistent with all polymers
P09661 8c6j ;U2 small nuclear ribonucleoprotein A' ; Author chain W Reference sequence 1–255 1 Protein–RNA Heteromer Protein 58 RNA 5 63-meric （63） Consistent with all polymers
P09661 8ch6 ;U2 small nuclear ribonucleoprotein A' ; Author chain r Reference sequence 1–255 1 Protein–RNA Heteromer Protein 55 RNA 4 59-meric （59） Consistent with all polymers
P09661 8h6e ;U2 small nuclear ribonucleoprotein A' ; Author chain 2B Reference sequence 1–255 1 Protein–RNA Heteromer Protein 56 RNA 5 61-meric （61） Consistent with all polymers
P09661 8h6j ;U2 small nuclear ribonucleoprotein A' ; Author chain 2B Reference sequence 1–255 1 Protein–RNA Heteromer Protein 56 RNA 5 61-meric （61） Consistent with all polymers
P09661 8h6k ;U2 small nuclear ribonucleoprotein A' ; Author chain 2B Reference sequence 1–255 1 Protein–RNA Heteromer Protein 58 RNA 5 63-meric （63） Consistent with all polymers
P09661 8h6l ;U2 small nuclear ribonucleoprotein A' ; Author chain 2B Reference sequence 1–255 1 Protein–RNA Heteromer Protein 54 RNA 5 59-meric （59） Consistent with all polymers
P09661 8hk1 ;U2 small nuclear ribonucleoprotein A' ; Author chain F Reference sequence 1–255 1 Protein–RNA Heteromer Protein 20 RNA 1 21-meric （21） Consistent with all polymers
P09661 8i0p ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 47 RNA 4 51-meric （51） Consistent with all polymers
P09661 8i0r ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 51 RNA 4 55-meric （55） Consistent with all polymers
P09661 8i0s ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 46 RNA 4 50-meric （50） Consistent with all polymers
P09661 8i0t ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 52 RNA 4 56-meric （56） Consistent with all polymers
P09661 8i0u ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 49 RNA 4 53-meric （53） Consistent with all polymers
P09661 8i0v ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 47 RNA 4 51-meric （51） Consistent with all polymers
P09661 8i0w ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 53 RNA 5 58-meric （58） Consistent with all polymers
P09661 8qo9 ;U2 small nuclear ribonucleoprotein A' ; Author chain 2A Reference sequence 1–255 1 Protein–RNA Heteromer Protein 66 RNA 5 71-meric （71） Consistent with all polymers
P09661 8qxd ;U2 small nuclear ribonucleoprotein A' ; Author chain 2A Reference sequence 1–255 1 Protein–RNA Heteromer Protein 56 RNA 5 61-meric （61） Consistent with all polymers
P09661 8qzs ;U2 small nuclear ribonucleoprotein A' ; Author chain 2A Reference sequence 1–255 1 Protein–RNA Heteromer Protein 61 RNA 7 68-meric （68） Consistent with all polymers
P09661 8r08 ;U2 small nuclear ribonucleoprotein A' ; Author chain 2A Reference sequence 1–255 1 Protein–RNA Heteromer Protein 64 RNA 7 71-meric （71） Consistent with all polymers
P09661 8r09 ;U2 small nuclear ribonucleoprotein A' ; Author chain 2A Reference sequence 1–255 1 Protein–RNA Heteromer Protein 54 RNA 6 60-meric （60） Consistent with all polymers
P09661 8r0a ;U2 small nuclear ribonucleoprotein A' ; Author chain 2A Reference sequence 1–255 1 Protein–RNA Heteromer Protein 56 RNA 6 62-meric （62） Consistent with all polymers
P09661 8r0b ;U2 small nuclear ribonucleoprotein A' ; Author chain 2A Reference sequence 1–255 1 Protein–RNA Heteromer Protein 54 RNA 6 60-meric （60） Consistent with all polymers
P09661 8rm5 ;U2 small nuclear ribonucleoprotein A' ; Author chain 2A Reference sequence 1–255 1 Protein–RNA Heteromer Protein 54 RNA 6 60-meric （60） Consistent with all polymers
P09661 9fmd ;U2 small nuclear ribonucleoprotein A' ; Author chain o Reference sequence 1–255 1 Protein–RNA Heteromer Protein 58 RNA 5 63-meric （63） Consistent with all polymers
P09661 9r8v ;U2 small nuclear ribonucleoprotein A' ; Author chain 2A Reference sequence 1–255 1 Protein–RNA Heteromer Protein 59 RNA 4 63-meric （63） Consistent with all polymers

“Homomeric versus heteromeric classification follows protein identity; different constructs of the same UniProt entry still require comparison of reference-sequence ranges, mutations and missing segments. Assemblies marked for review remain visible but are not included in the highest-confidence candidate set.