2bbh: Difference between revisions
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[[Image:2bbh.gif|left|200px]] | [[Image:2bbh.gif|left|200px]] | ||
'''X-ray structure of T.maritima CorA soluble domain''' | {{Structure | ||
|PDB= 2bbh |SIZE=350|CAPTION= <scene name='initialview01'>2bbh</scene>, resolution 1.85Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=DMU:DECYL-BETA-D-MALTOPYRANOSIDE'>DMU</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene> and <scene name='pdbligand=MG:MAGNESIUM ION'>MG</scene> | |||
|ACTIVITY= | |||
|GENE= | |||
}} | |||
'''X-ray structure of T.maritima CorA soluble domain''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
2BBH is a [ | 2BBH is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BBH OCA]. | ||
==Reference== | ==Reference== | ||
Crystal structure of the CorA Mg2+ transporter., Lunin VV, Dobrovetsky E, Khutoreskaya G, Zhang R, Joachimiak A, Doyle DA, Bochkarev A, Maguire ME, Edwards AM, Koth CM, Nature. 2006 Apr 6;440(7085):833-7. PMID:[http:// | Crystal structure of the CorA Mg2+ transporter., Lunin VV, Dobrovetsky E, Khutoreskaya G, Zhang R, Joachimiak A, Doyle DA, Bochkarev A, Maguire ME, Edwards AM, Koth CM, Nature. 2006 Apr 6;440(7085):833-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16598263 16598263] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Thermotoga maritima]] | [[Category: Thermotoga maritima]] | ||
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[[Category: mg]] | [[Category: mg]] | ||
[[Category: sgc]] | [[Category: sgc]] | ||
[[Category: structural | [[Category: structural genomic]] | ||
[[Category: structural genomics consortium]] | [[Category: structural genomics consortium]] | ||
[[Category: transporter]] | [[Category: transporter]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 15:59:45 2008'' | ||
Revision as of 16:59, 20 March 2008
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| , resolution 1.85Å | |||||||
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| Ligands: | , and | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
X-ray structure of T.maritima CorA soluble domain
OverviewOverview
The magnesium ion, Mg2+, is essential for myriad biochemical processes and remains the only major biological ion whose transport mechanisms remain unknown. The CorA family of magnesium transporters is the primary Mg2+ uptake system of most prokaryotes and a functional homologue of the eukaryotic mitochondrial magnesium transporter. Here we determine crystal structures of the full-length Thermotoga maritima CorA in an apparent closed state and its isolated cytoplasmic domain at 3.9 A and 1.85 A resolution, respectively. The transporter is a funnel-shaped homopentamer with two transmembrane helices per monomer. The channel is formed by an inner group of five helices and putatively gated by bulky hydrophobic residues. The large cytoplasmic domain forms a funnel whose wide mouth points into the cell and whose walls are formed by five long helices that are extensions of the transmembrane helices. The cytoplasmic neck of the pore is surrounded, on the outside of the funnel, by a ring of highly conserved positively charged residues. Two negatively charged helices in the cytoplasmic domain extend back towards the membrane on the outside of the funnel and abut the ring of positive charge. An apparent Mg2+ ion was bound between monomers at a conserved site in the cytoplasmic domain, suggesting a mechanism to link gating of the pore to the intracellular concentration of Mg2+.
About this StructureAbout this Structure
2BBH is a Single protein structure of sequence from Thermotoga maritima. Full crystallographic information is available from OCA.
ReferenceReference
Crystal structure of the CorA Mg2+ transporter., Lunin VV, Dobrovetsky E, Khutoreskaya G, Zhang R, Joachimiak A, Doyle DA, Bochkarev A, Maguire ME, Edwards AM, Koth CM, Nature. 2006 Apr 6;440(7085):833-7. PMID:16598263
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