← Back to search

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：P00642 New Search
8PDB entries
9Biological assembly
13chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
P00642 1ckq PROTEIN (ENDONUCLEASE) Author chain A Reference sequence 1–276 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P00642 1cl8 PROTEIN (ENDONUCLEASE) Author chain A Reference sequence 1–276 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P00642 1eri PROTEIN (ECO RI ENDONUCLEASE (E.C.3.1.21.4)) Author chain A Reference sequence 1–276 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P00642 1qc9 PROTEIN (ECO RI ENDONUCLEASE) Author chain A Reference sequence 2–277 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P00642 1qc9 PROTEIN (ECO RI ENDONUCLEASE) Author chain B Reference sequence 2–277 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P00642 1qc9 PROTEIN (ECO RI ENDONUCLEASE) Author chain C Reference sequence 2–277 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P00642 1qc9 PROTEIN (ECO RI ENDONUCLEASE) Author chain A Reference sequence 2–277 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P00642 1qc9 PROTEIN (ECO RI ENDONUCLEASE) Author chain B Reference sequence 2–277 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P00642 1qc9 PROTEIN (ECO RI ENDONUCLEASE) Author chain C Reference sequence 2–277 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P00642 1qps ENDONUCLEASE ECORI Author chain A Reference sequence 16–276 1 Protein–DNA Homooligomer Protein 2 DNA 4 hexameric （6） Consistent with all polymers
P00642 1qrh ECO RI ENDONCULEASE Author chain A Reference sequence 16–276 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P00642 1qri ECO RI ENDONCULEASE Author chain A Reference sequence 16–276 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P00642 2oxv Type II restriction enzyme EcoRI Author chain A Reference sequence 1–277 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） 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.