1fvh

CRYSTAL STRUCTURE ANALYSIS OF NEURONAL SEC1 FROM THE SQUID L. PEALEI

spinqualitylabelsall models 1fvh, resolution 2.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1fvh is a 1 chain structure with sequence from Doryteuthis pealeii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.8Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function O62547_DORPE Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Sec1 molecules associate with t-SNAREs from the syntaxin family in a heterodimeric complex that plays an essential role in vesicle transport and membrane fusion. Neuronal rat n-Sec1 has an arch-shaped three-domain structure, which binds syntaxin 1a through contacts in domains 1 and 3. In both rat nSec1 and homologous squid s-Sec1, a potential effector-molecule binding-pocket is shaped by residues from domains 1 and 2 and is localized on the opposite side of the syntaxin 1a interaction site. Comparison of several crystal forms of unliganded neuronal squid Sec1 indicates a hinge region between domains 1 and 2 which allows domain 1 to rotate along a central axis. This movement could release syntaxin 1a upon interaction with a yet unspecified Sec1 effector molecule(s). The binding of an effector protein may also directly affect the conformation of the helical hairpin of domain 3, which contributes the other significant syntaxin 1a binding sites in the rat nSec1/syntaxin 1a complex structure but adopts multiple conformations in the unliganded s-Sec1 structures reported here. Crystal structures of neuronal squid Sec1 implicate inter-domain hinge movement in the release of t-SNAREs.,Bracher A, Weissenhorn W J Mol Biol. 2001 Feb 9;306(1):7-13. PMID:11178889 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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