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Class I topoisomerase

PDB ID: 1A36

Class I topoisomerases bind to DNA and release tension caused by winding or unwinding of the double helix. This structure includes the enzyme and a short piece of DNA captured before the cleavage reaction that relaxes the DNA.

Read the Molecule of the Month article on Topoisomerases.
Discussed Structures from Topoisomerases
class I topoisomerase
class I topoisomerase
class I topoisomerase
class I topoisomerase
class II topoisomerase fragment
class II topoisomerase fragment
class II topoisomerase fragment
class II topoisomerase fragment
 3D structure
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Length: 22
Type: dna
Length: 22
Type: dna
Length: 591
Type: protein
 
 
 
 

Reference

PDB ID: 1A36 , Pubmed

Stewart, L., Redinbo, M.R., Qiu, X., Hol, W.G., Champoux, J.J. (1998) A model for the mechanism of human topoisomerase I. Science 279: 1534-41


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