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2fjy
From Proteopedia
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|ACTIVITY= | |ACTIVITY= | ||
|GENE= PBP ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=7091 Bombyx mori]) | |GENE= PBP ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=7091 Bombyx mori]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2fjy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fjy OCA], [http://www.ebi.ac.uk/pdbsum/2fjy PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2fjy RCSB]</span> | ||
}} | }} | ||
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[[Category: alpha helical]] | [[Category: alpha helical]] | ||
| - | ''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 03:03:49 2008'' |
Revision as of 00:03, 31 March 2008
| |||||||
| , resolution 2.300Å | |||||||
|---|---|---|---|---|---|---|---|
| Gene: | PBP (Bombyx mori) | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of B-form Bombyx mori Pheromone Binding Protein
Overview
The transport of hydrophobic insect pheromones through the aqueous medium surrounding their receptors is assisted by pheromone-binding proteins (PBPs). The protein from the silkworm moth Bombyx mori, BmorPBP, exhibits a pH-dependent conformational change postulated to trigger the release of the pheromone bombykol to its receptor. At low pH, an alpha-helix occupies the same binding pocket that houses the pheromone in the BmorPBP-bombykol complex at high pH. We have determined the crystal structure of apo BmorPBP at a resolution of 2.3 angstroms and pH 7.5, which has surprisingly a structure similar to the A-form. These data suggest that BmorPBP undergoes a ligand-dependent conformational change in addition to the previously described pH-dependent conformational change. Analysis of the alpha-helix occupying the binding pocket reveals an amphipathic helix with three acidic residues along one face that are conserved among lepidopteran PBPs and may be involved in a conformational transition of BmorPBP at the receptor membrane.
About this Structure
2FJY is a Single protein structure of sequence from Bombyx mori. Full crystallographic information is available from OCA.
Reference
Coil-to-helix transition and ligand release of Bombyx mori pheromone-binding protein., Lautenschlager C, Leal WS, Clardy J, Biochem Biophys Res Commun. 2005 Oct 7;335(4):1044-50. PMID:16111659
Page seeded by OCA on Mon Mar 31 03:03:49 2008
