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Smallpox virus topoisomerase-DNA transition state External Resource: Annotation Chains Family Name Domain Identifier Architecture Possible Homology Homology Topology Family Provenance Source (Version) A Topoisom_I_C e3igcA2 A: alpha arrays X: HTH H: HTH T: DNA breaking-rejoining enzymes F: Topoisom_I_C ECOD (1.6) A Topoisom_I_N e3igcA1 A: alpha arrays X: HTH H: HTH T: DNA breaking-rejoining enzymes F: Topoisom_I_N ECOD (1.6) A VirDNA-topo-I_N e3igcA3 A: a+b two layers X: DNA topoisomerase I domain (From Topology) H: DNA topoisomerase I domain (From Topology) T: DNA topoisomerase I domain F: VirDNA-topo-I_N ECOD (1.6)
Chains Accession Name Description Comments Source 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 PF01028 Eukaryotic DNA topoisomerase I, catalytic core (Topoisom_I) Eukaryotic DNA topoisomerase I, catalytic core Topoisomerase I promotes the relaxation of DNA superhelical tension by introducing a transient single-stranded break in duplex DNA and are vital for the processes of replication, transcription, and recombination [2]. Domain
Chains Polymer Molecular Function Biological Process Cellular Component DNA topoisomerase 1 5'-D(*GP*TP*GP*TP*CP*GP*CP*CP*CP*TP*T)-3' - - - 5'-D(*AP*TP*TP*CP*C)-3' - - - 5'-D(*CP*GP*GP*AP*AP*TP*AP*AP*GP*GP*GP*CP*GP*AP*CP*A)-3' - - -
Chains Accession Name Type IPR035447 DNA topoisomerase I, N-terminal domain superfamily Homologous Superfamily IPR011010 DNA breaking-rejoining enzyme, catalytic core Homologous Superfamily IPR001631 DNA topoisomerase I Family IPR013500 DNA topoisomerase I, catalytic core, eukaryotic-type Domain IPR014711 DNA topoisomerase I, catalytic core, alpha-helical subdomain, eukaryotic-type Homologous Superfamily IPR018521 DNA topoisomerase I, active site Active Site IPR015346 DNA topoisomerase I, N-terminal, viral Domain