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Crystal structure of a bacterial topoisomerase IB in complex with DNA reveals a secondary DNA binding site External Resource: Annotation Chains Family Name Domain Identifier Architecture Possible Homology Homology Topology Family Provenance Source (Version) A Topoisom_I_C e3m4aA6 A: alpha arrays X: HTH H: HTH T: DNA breaking-rejoining enzymes F: Topoisom_I_C ECOD (1.6) A Topoisom_I_N e3m4aA1 A: alpha arrays X: HTH H: HTH T: DNA breaking-rejoining enzymes F: Topoisom_I_N ECOD (1.6) A Top1 e3m4aA7 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: Top1 ECOD (1.6)
Chains Accession Name Description Comments Source 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 Putative Type I topoisomerase - B [auth D] DNA (5'-D(*GP*AP*AP*TP*AP*AP*GP*GP*GP*CP*GP*C)-3') - - - C [auth E] DNA (5'-D(*GP*CP*GP*CP*CP*CP*TP*TP*AP*TP*TP*C)-3') - - -