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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：Q9UK80 New Search
4PDB entries
9Biological assembly
25chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
Q9UK80 2y5b UBIQUITIN CARBOXYL-TERMINAL HYDROLASE 21 Author chain A Reference sequence 196–565 1 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 2y5b UBIQUITIN CARBOXYL-TERMINAL HYDROLASE 21 Author chain E Reference sequence 196–565 1 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 2y5b UBIQUITIN CARBOXYL-TERMINAL HYDROLASE 21 Author chain A Reference sequence 196–565 2 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 2y5b UBIQUITIN CARBOXYL-TERMINAL HYDROLASE 21 Author chain E Reference sequence 196–565 2 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain A Reference sequence 209–563 1 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain C Reference sequence 209–563 1 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain E Reference sequence 209–563 1 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain G Reference sequence 209–563 1 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain A Reference sequence 209–563 2 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain C Reference sequence 209–563 2 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain E Reference sequence 209–563 2 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain G Reference sequence 209–563 2 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain A Reference sequence 209–563 3 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain C Reference sequence 209–563 3 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain E Reference sequence 209–563 3 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain G Reference sequence 209–563 3 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain A Reference sequence 209–563 4 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain C Reference sequence 209–563 4 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain E Reference sequence 209–563 4 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3i3t Ubiquitin carboxyl-terminal hydrolase 21 Author chain G Reference sequence 209–563 4 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3mtn Ubiquitin carboxyl-terminal hydrolase 21 Author chain A Reference sequence 209–562 1 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3mtn Ubiquitin carboxyl-terminal hydrolase 21 Author chain C Reference sequence 209–562 1 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3mtn Ubiquitin carboxyl-terminal hydrolase 21 Author chain A Reference sequence 209–562 2 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 3mtn Ubiquitin carboxyl-terminal hydrolase 21 Author chain C Reference sequence 209–562 2 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
Q9UK80 9ny4 Ubiquitin carboxyl-terminal hydrolase 21 Author chain K Reference sequence 196–565 1 Protein–DNA Heteromer Protein 10 DNA 2 12-meric （12） 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.