1VCC | pdb_00001vcc

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1vcca_	Alpha and beta proteins (a+b)	DNA topoisomerase I domain	DNA topoisomerase I domain	Vaccinia DNA topoisomerase I, 9 kDa N-terminal fragment	Vaccinia DNA topoisomerase I, 9 kDa N-terminal fragment	(Vaccinia virus WR ) [TaxId: 10254 ],	SCOPe (2.08)

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Vaccinia DNA topoisomerase I, 9 kDa N-terminal fragment	8023819	4001939	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	DNA topoisomerase I domain	8036199	3000578	SCOP2 (2022-06-29)

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	VirDNA-topo-I_N	e1vccA1	A: a+b two layers	X: DNA topoisomerase I domain	H: DNA topoisomerase I domain	T: DNA topoisomerase I domain	F: VirDNA-topo-I_N	ECOD (v294.2)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.66.10	Alpha Beta	2-Layer Sandwich	Viral Topoisomerase I	DNA topoisomerase I domain	CATH (4.3.0)

Chains	Accession	Name	Description	Comments	Source
A	PF09266	Viral DNA topoisomerase I, N-terminal (VirDNA-topo-I_N)	Viral DNA topoisomerase I, N-terminal	Members of this family are predominantly found in viral DNA topoisomerase, and assume a beta(2)-alpha-beta-alpha-beta(2) fold, with a left-handed crossover between strands beta2 and beta3 [1].	Domain

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	DNA TOPOISOMERASE I	DNA binding binding nucleic acid binding nucleic acid conformation isomerase activity isomerase activity DNA topoisomerase type I (single strand cut, ATP-independent) activity catalytic activity, acting on DNA DNA topoisomerase activity catalytic activity, acting on a nucleic acid catalytic activity macromolecular conformation isomerase activity	chromosome organization primary metabolic process DNA conformation change DNA metabolic process nucleic acid metabolic process cellular component organization nucleobase-containing compound metabolic process DNA topological change organelle organization cellular process metabolic process cellular component organization or biogenesis macromolecule metabolic process	virion component

Chains	Accession	Name	Type
A	IPR035447	DNA topoisomerase I, N-terminal domain superfamily	Homologous Superfamily
A	IPR011010	DNA breaking-rejoining enzyme, catalytic core	Homologous Superfamily
A	IPR001631	DNA topoisomerase I	Family
A	IPR013500	DNA topoisomerase I, catalytic core, eukaryotic-type	Domain
A	IPR014711	DNA topoisomerase I, catalytic core, alpha-helical subdomain, eukaryotic-type	Homologous Superfamily
A	IPR018521	DNA topoisomerase IB, active site	Active Site
A	IPR015346	DNA topoisomerase I, N-terminal, viral	Domain

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.