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Curr Opin Struct Biol. 2012 Apr;22(2):225-33. doi: 10.1016/j.sbi.2012.02.007. Epub 2012 Mar 23.

Swi2/Snf2 remodelers: hybrid views on hybrid molecular machines.

Author information

  • 1Department of Biochemistry at the Gene Center, Ludwig-Maximilians-University Munich, Feodor-Lynen-Str. 25, 81377 Munich, Germany. hopfner@genzentrum.lmu.de

Abstract

Swi2/Snf2 (switch/sucrose non-fermentable) enzymes form a large and diverse class of proteins and multiprotein assemblies that remodel nucleic acid:protein complexes, using the energy of ATP hydrolysis. The core Swi2/Snf2 type ATPase domain belongs to the 'helicase and NTP driven nucleic acid translocase' superfamily 2 (SF2). It serves as a motor that functionally and structurally interacts with different targeting domains and functional modules to drive a plethora of remodeling activities in chromatin structure and dynamics, transcription regulation and DNA repair. Recent progress on the interaction of Swi2/Snf2 enzymes and multiprotein assemblies with their substrate nucleic acids and proteins, using hybrid structural biology methods, illuminates mechanisms for complex chemo-mechanical remodeling reactions. For Mot1, a hybrid mechanism of remodeler and chaperone emerged.

Copyright © 2012. Published by Elsevier Ltd.

PMID:
22445226
[PubMed - indexed for MEDLINE]
PMCID:
PMC3323801
Free PMC Article

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