RCSB PDB

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species
A	d1x23a1	Alpha and beta proteins (a+b)	UBC-like	UBC-like	UBC-related	Ubiquitin conjugating enzyme, UBC	human (Homo sapiens ) [TaxId: 9606 ]
A	d1x23a2	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ]
B	d1x23b2	Alpha and beta proteins (a+b)	UBC-like	UBC-like	UBC-related	automated matches	human (Homo sapiens ) [TaxId: 9606 ]
B	d1x23b3	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ]
C	d1x23c2	Alpha and beta proteins (a+b)	UBC-like	UBC-like	UBC-related	automated matches	human (Homo sapiens ) [TaxId: 9606 ]
C	d1x23c3	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ]
D	d1x23d2	Alpha and beta proteins (a+b)	UBC-like	UBC-like	UBC-related	automated matches	human (Homo sapiens ) [TaxId: 9606 ]
D	d1x23d3	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ]

Chain	Domain	Class	Architecture	Topology	Homology
A	3.10.110.10	Alpha Beta	Roll	Ubiquitin Conjugating Enzyme	Ubiquitin Conjugating Enzyme
B	3.10.110.10	Alpha Beta	Roll	Ubiquitin Conjugating Enzyme	Ubiquitin Conjugating Enzyme
C	3.10.110.10	Alpha Beta	Roll	Ubiquitin Conjugating Enzyme	Ubiquitin Conjugating Enzyme
D	3.10.110.10	Alpha Beta	Roll	Ubiquitin Conjugating Enzyme	Ubiquitin Conjugating Enzyme

Chains	Accession	Identifier	Description	Comments	Source
A, B, C, D	PF00179	Ubiquitin-conjugating enzyme (UQ_con)	Ubiquitin-conjugating enzyme	Proteins destined for proteasome-mediated degradation may be ubiquitinated. Ubiquitination follows conjugation of ubiquitin to a conserved cysteine residue of UBC homologues. TSG101 is one of several UBC homologues that lacks this active site cystein ...	Proteins destined for proteasome-mediated degradation may be ubiquitinated. Ubiquitination follows conjugation of ubiquitin to a conserved cysteine residue of UBC homologues. TSG101 is one of several UBC homologues that lacks this active site cysteine [4, 5].	Domain

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Ubiquitin-conjugating enzyme E2 D3	catalytic activity ubiquitin-protein transferase activity transferase activity ubiquitin-like protein transferase activity ubiquitin conjugating enzyme activity ubiquitin-like protein conjugating enzyme activity catalytic activity, acting on a protein	cellular process response to inorganic substance response to metal ion response to chemical response to cadmium ion response to stimulus cellular response to stimulus cellular response to chemical stimulus cellular response to inorganic substance cellular response to metal ion cellular response to cadmium ion response to mercury ion cellular response to mercury ion	intracellular anatomical structure cytoplasm cytosol cellular anatomical entity endosome endosome membrane endomembrane system membrane organelle membrane cytoplasmic vesicle vesicle organelle membrane-bounded organelle intracellular vesicle bounding membrane of organelle extracellular region extracellular space extracellular organelle extracellular exosome extracellular vesicle nucleus nucleoplasm membrane-enclosed lumen nuclear lumen intracellular organelle intracellular membrane-bounded organelle organelle lumen intracellular organelle lumen plasma membrane cell periphery