1oxs: Difference between revisions
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|PDB= 1oxs |SIZE=350|CAPTION= <scene name='initialview01'>1oxs</scene>, resolution 1.65Å | |PDB= 1oxs |SIZE=350|CAPTION= <scene name='initialview01'>1oxs</scene>, resolution 1.65Å | ||
|SITE= | |SITE= | ||
|LIGAND= <scene name='pdbligand=IOD:IODIDE ION'>IOD</scene> | |LIGAND= <scene name='pdbligand=IOD:IODIDE+ION'>IOD</scene> | ||
|ACTIVITY= | |ACTIVITY= | ||
|GENE= glcV ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2287 Sulfolobus solfataricus]) | |GENE= glcV ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2287 Sulfolobus solfataricus]) | ||
|DOMAIN= | |||
|RELATEDENTRY= | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1oxs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1oxs OCA], [http://www.ebi.ac.uk/pdbsum/1oxs PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1oxs RCSB]</span> | |||
}} | }} | ||
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[[Category: Thunnissen, A M.]] | [[Category: Thunnissen, A M.]] | ||
[[Category: Verdon, G.]] | [[Category: Verdon, G.]] | ||
[[Category: abc-atpase]] | [[Category: abc-atpase]] | ||
[[Category: atp-binding cassette]] | [[Category: atp-binding cassette]] | ||
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[[Category: sulfolobus solfataricus]] | [[Category: sulfolobus solfataricus]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 22:51:56 2008'' | ||
Revision as of 19:51, 30 March 2008
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| 1oxs, resolution 1.65Å | |||||||||||||
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| Ligands: | IOD | ||||||||||||
| Gene: | glcV (Sulfolobus solfataricus) | ||||||||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
Crystal structure of GlcV, the ABC-ATPase of the glucose ABC transporter from Sulfolobus solfataricus
Overview
The ABC-ATPase GlcV energizes a binding protein-dependent ABC transporter that mediates glucose uptake in Sulfolobus solfataricus. Here, we report high-resolution crystal structures of GlcV in different states along its catalytic cycle: distinct monomeric nucleotide-free states and monomeric complexes with ADP-Mg(2+) as a product-bound state, and with AMPPNP-Mg(2+) as an ATP-like bound state. The structure of GlcV consists of a typical ABC-ATPase domain, comprising two subdomains, connected by a linker region to a C-terminal domain of unknown function. Comparisons of the nucleotide-free and nucleotide-bound structures of GlcV reveal re-orientations of the ABCalpha subdomain and the C-terminal domain relative to the ABCalpha/beta subdomain, and switch-like rearrangements in the P-loop and Q-loop regions. Additionally, large conformational differences are observed between the GlcV structures and those of other ABC-ATPases, further emphasizing the inherent flexibility of these proteins. Notably, a comparison of the monomeric AMPPNP-Mg(2+)-bound GlcV structure with that of the dimeric ATP-Na(+)-bound LolD-E171Q mutant reveals a +/-20 degrees rigid body re-orientation of the ABCalpha subdomain relative to the ABCalpha/beta subdomain, accompanied by a local conformational difference in the Q-loop. We propose that these differences represent conformational changes that may have a role in the mechanism of energy-transduction and/or allosteric control of the ABC-ATPase activity in bacterial importers.
About this Structure
1OXS is a Single protein structure of sequence from Sulfolobus solfataricus. Full crystallographic information is available from OCA.
Reference
Crystal structures of the ATPase subunit of the glucose ABC transporter from Sulfolobus solfataricus: nucleotide-free and nucleotide-bound conformations., Verdon G, Albers SV, Dijkstra BW, Driessen AJ, Thunnissen AM, J Mol Biol. 2003 Jul 4;330(2):343-58. PMID:12823973
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