3bk6
From Proteopedia
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|ACTIVITY= | |ACTIVITY= | ||
|GENE= PH1511 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=53953 Pyrococcus horikoshii]) | |GENE= PH1511 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=53953 Pyrococcus horikoshii]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3bk6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bk6 OCA], [http://www.ebi.ac.uk/pdbsum/3bk6 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=3bk6 RCSB]</span> | ||
}} | }} | ||
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[[Category: trimer]] | [[Category: trimer]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 05:27:07 2008'' |
Revision as of 02:27, 31 March 2008
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| , resolution 3.20Å | |||||||
|---|---|---|---|---|---|---|---|
| Gene: | PH1511 (Pyrococcus horikoshii) | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of a core domain of stomatin from Pyrococcus horikoshii
Overview
Stomatin is a major integral membrane protein of human erythrocytes, the absence of which is associated with a form of hemolytic anemia known as hereditary stomatocytosis. However, the function of stomatin is not fully understood. An open reading frame, PH1511, from the hyperthermophilic archaeon Pyrococcus horikoshii encodes p-stomatin, a prokaryotic stomatin. Here, we report the first crystal structure of a stomatin ortholog, the core domain of the p-stomatin PH1511p (residues 56-234 of PH1511p, designated as PhSto(CD)). PhSto(CD) forms a novel homotrimeric structure. Three alpha/beta domains form a triangle of about 50 A on each side, and three alpha-helical segments of about 60 A in length extend from the apexes of the triangle. The alpha/beta domain of PhSto(CD) is partly similar in structure to the band-7 domain of mouse flotillin-2. While the alpha/beta domain is relatively rigid, the alpha-helical segment shows conformational flexibility, adapting to the neighboring environment. One alpha-helical segment forms an anti-parallel coiled coil with another alpha-helical segment from a symmetry-related molecule. The alpha-helical segment shows a heptad repeat pattern, and mainly hydrophobic residues form a coiled-coil interface. According to chemical cross-linking experiments, PhSto(CD) would be able to assemble into an oligomeric form. The coiled-coil fold observed in the crystal probably contributes to self-association.
About this Structure
3BK6 is a Single protein structure of sequence from Pyrococcus horikoshii. Full crystallographic information is available from OCA.
Reference
Crystal structure of a core domain of stomatin from Pyrococcus horikoshii Illustrates a novel trimeric and coiled-coil fold., Yokoyama H, Fujii S, Matsui I, J Mol Biol. 2008 Feb 22;376(3):868-78. Epub 2008 Jan 8. PMID:18182167
Page seeded by OCA on Mon Mar 31 05:27:07 2008
Categories: Pyrococcus horikoshii | Single protein | Fujii, S. | Matsui, I. | Yokoyama, H. | Archaea | Coiled-coil | Flotillin | Membrane fusion | Membrane protein | Spfh | Stomatin | Trafficking | Transmembrane | Trimer
