1jx2

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{{STRUCTURE_1jx2| PDB=1jx2 | SCENE= }}
{{STRUCTURE_1jx2| PDB=1jx2 | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE NUCLEOTIDE-FREE DYNAMIN A GTPASE DOMAIN, DETERMINED AS MYOSIN FUSION'''
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===CRYSTAL STRUCTURE OF THE NUCLEOTIDE-FREE DYNAMIN A GTPASE DOMAIN, DETERMINED AS MYOSIN FUSION===
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==Overview==
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Dynamins form a family of multidomain GTPases involved in endocytosis, vesicle trafficking and maintenance of mitochondrial morphology. In contrast to the classical switch GTPases, a force-generating function has been suggested for dynamins. Here we report the 2.3 A crystal structure of the nucleotide-free and GDP-bound GTPase domain of Dictyostelium discoideum dynamin A. The GTPase domain is the most highly conserved region among dynamins. The globular structure contains the G-protein core fold, which is extended from a six-stranded beta-sheet to an eight-stranded one by a 55 amino acid insertion. This topologically unique insertion distinguishes dynamins from other subfamilies of GTP-binding proteins. An additional N-terminal helix interacts with the C-terminal helix of the GTPase domain, forming a hydrophobic groove, which could be occupied by C-terminal parts of dynamin not present in our construct. The lack of major conformational changes between the nucleotide-free and the GDP-bound state suggests that mechanochemical rearrangements in dynamin occur during GTP binding, GTP hydrolysis or phosphate release and are not linked to loss of GDP.
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(as it appears on PubMed at http://www.pubmed.gov), where 11689422 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11689422}}
==About this Structure==
==About this Structure==
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[[Category: Gtpase]]
[[Category: Gtpase]]
[[Category: Myosin]]
[[Category: Myosin]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 22:01:56 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 21:19:05 2008''

Revision as of 18:19, 28 July 2008

Template:STRUCTURE 1jx2

CRYSTAL STRUCTURE OF THE NUCLEOTIDE-FREE DYNAMIN A GTPASE DOMAIN, DETERMINED AS MYOSIN FUSION

Template:ABSTRACT PUBMED 11689422

About this Structure

1JX2 is a Protein complex structure of sequences from Dictyostelium discoideum. Full crystallographic information is available from OCA.

Reference

Crystal structure of a dynamin GTPase domain in both nucleotide-free and GDP-bound forms., Niemann HH, Knetsch ML, Scherer A, Manstein DJ, Kull FJ, EMBO J. 2001 Nov 1;20(21):5813-21. PMID:11689422

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