The crystal structure of dynamin

Marijn G. J. Ford, Simon Jenni and Jodi Nunnari ()
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Marijn G. J. Ford: University of California, Davis, Davis, California 95616, USA
Simon Jenni: Harvard Medical School
Jodi Nunnari: University of California, Davis, Davis, California 95616, USA

Nature, 2011, vol. 477, issue 7366, 561-566

Abstract: Abstract Dynamin-related proteins (DRPs) are multi-domain GTPases that function via oligomerization and GTP-dependent conformational changes to play central roles in regulating membrane structure across phylogenetic kingdoms. How DRPs harness self-assembly and GTP-dependent conformational changes to remodel membranes is not understood. Here we present the crystal structure of an assembly-deficient mammalian endocytic DRP, dynamin 1, lacking the proline-rich domain, in its nucleotide-free state. The dynamin 1 monomer is an extended structure with the GTPase domain and bundle signalling element positioned on top of a long helical stalk with the pleckstrin homology domain flexibly attached on its opposing end. Dynamin 1 dimer and higher order dimer multimers form via interfaces located in the stalk. Analysis of these interfaces provides insight into DRP family member specificity and regulation and provides a framework for understanding the biogenesis of higher order DRP structures and the mechanism of DRP-mediated membrane scission events.

Date: 2011
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DOI: 10.1038/nature10441

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