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.
机构:
Scripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA
NIDDKD, Mol Biol Lab, NIH, Bethesda, MD 20892 USAScripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA
Chappie, Joshua S.
;
Acharya, Sharmistha
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机构:
Scripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USAScripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA
Acharya, Sharmistha
;
Leonard, Marilyn
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机构:
Scripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USAScripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA
Leonard, Marilyn
;
Schmid, Sandra L.
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机构:
Scripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USAScripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA
Schmid, Sandra L.
;
Dyda, Fred
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机构:
NIDDKD, Mol Biol Lab, NIH, Bethesda, MD 20892 USAScripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA
机构:
Scripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA
NIDDKD, Mol Biol Lab, NIH, Bethesda, MD 20892 USAScripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA
Chappie, Joshua S.
;
Acharya, Sharmistha
论文数: 0引用数: 0
h-index: 0
机构:
Scripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USAScripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA
Acharya, Sharmistha
;
Leonard, Marilyn
论文数: 0引用数: 0
h-index: 0
机构:
Scripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USAScripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA
Leonard, Marilyn
;
Schmid, Sandra L.
论文数: 0引用数: 0
h-index: 0
机构:
Scripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USAScripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA
Schmid, Sandra L.
;
Dyda, Fred
论文数: 0引用数: 0
h-index: 0
机构:
NIDDKD, Mol Biol Lab, NIH, Bethesda, MD 20892 USAScripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA