Structural Classification of Proteins
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Protein: DNA topoisomerase III from Escherichia coli [TaxId: 562]

Lineage:

  1. Root: scop
  2. Class: Multi-domain proteins (alpha and beta) [56572]
    Folds consisting of two or more domains belonging to different classes
  3. Fold: Prokaryotic type I DNA topoisomerase [56711]
    4 domains: (1) Toprim alpha/beta; (2&4) "winged helix"-like; (3) barrel: n=6, S=8
  4. Superfamily: Prokaryotic type I DNA topoisomerase [56712]
    duplication: the protein chain passing through the domains 2-4 makes two structural repeats
    The active site is formed by the toprim and "winged helix" domains (domains 1 and 4); these two domains are also found in the type II topoisomerase (DNA gyrase A) and in the alpha subunit of topoisomerase IV
    link to SUPERFAMILY database - Superfamily
  5. Family: Prokaryotic type I DNA topoisomerase [56713]
    domain 4 contains the catalytic tyrosine residue
  6. Protein: DNA topoisomerase III [56716]
  7. Species: Escherichia coli [TaxId: 562] [56717]

PDB Entry Domains:

  1. 1i7d picpic
    complexed with cl, so4; mutant
    1. chain a [61886] picpiclink
  2. 1d6m picpic
    1. chain a [43248] picpiclink
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MRC site Generated from scop database 1.75 with scopm 1.101 on Wed Jun 3 10:42:06 2009
Copyright © 1994-2009 The scop authors / scop@mrc-lmb.cam.ac.uk