1nsf
D2 HEXAMERIZATION DOMAIN OF N-ETHYLMALEIMIDE SENSITIVE FACTOR (NSF)
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OverviewOverview
N-ethylmaleimide-sensitive factor (NSF) is a hexameric ATPase which primes and/or dissociates SNARE complexes involved in intracellular fusion events. Each NSF protomer contains three domains: an N-terminal domain required for SNARE binding and two ATPase domains, termed D1 and D2, with D2 being required for oligomerization. We have determined the 1.9 A crystal structure of the D2 domain of NSF complexed with ATP using multi-wavelength anomalous dispersion phasing. D2 consists of a nucleotide binding subdomain with a Rossmann fold and a C-terminal subdomain, which is structurally unique among nucleotide binding proteins. There are interactions between the ATP moiety and both the neighboring D2 protomer and the C-terminal subdomain that may be important for ATP-dependent oligomerization. Of particular importance are three well-ordered and conserved lysine residues that form ionic interactions with the beta- and gamma-phosphates, one of which likely contributes to the low hydrolytic activity of D2.
About this StructureAbout this Structure
1NSF is a Single protein structure of sequence from Cricetulus griseus with and as ligands. The following page contains interesting information on the relation of 1NSF with [AAA+ Proteases]. Full crystallographic information is available from OCA.
ReferenceReference
Structure of the ATP-dependent oligomerization domain of N-ethylmaleimide sensitive factor complexed with ATP., Yu RC, Hanson PI, Jahn R, Brunger AT, Nat Struct Biol. 1998 Sep;5(9):803-11. PMID:9731775
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