5efr: Difference between revisions
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==Crystal Structure of a BamA-BamD fusion== | ==Crystal Structure of a BamA-BamD fusion== | ||
<StructureSection load='5efr' size='340' side='right' caption='[[5efr]], [[Resolution|resolution]] 2.00Å' scene=''> | <StructureSection load='5efr' size='340' side='right' caption='[[5efr]], [[Resolution|resolution]] 2.00Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[5efr]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5EFR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5EFR FirstGlance]. <br> | <table><tr><td colspan='2'>[[5efr]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Rhodothermus_marinus_sg0.5jp17-172 Rhodothermus marinus sg0.5jp17-172]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5EFR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5EFR FirstGlance]. <br> | ||
</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5efr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5efr OCA], [http://pdbe.org/5efr PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5efr RCSB], [http://www.ebi.ac.uk/pdbsum/5efr PDBsum]</span></td></tr> | </td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5efr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5efr OCA], [http://pdbe.org/5efr PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5efr RCSB], [http://www.ebi.ac.uk/pdbsum/5efr PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5efr ProSAT]</span></td></tr> | ||
</table> | </table> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Rhodothermus marinus sg0 5jp17-172]] | |||
[[Category: Bergal, H T]] | [[Category: Bergal, H T]] | ||
[[Category: Hopkins, A H]] | [[Category: Hopkins, A H]] | ||
Revision as of 15:37, 6 November 2017
Crystal Structure of a BamA-BamD fusionCrystal Structure of a BamA-BamD fusion
Structural highlights
Publication Abstract from PubMedThe beta-barrel assembly machine (BAM) mediates folding and insertion of integral beta-barrel outer membrane proteins (OMPs) in Gram-negative bacteria. Of the five BAM subunits, only BamA and BamD are essential for cell viability. Here we present the crystal structure of a fusion between BamA POTRA4-5 and BamD from Rhodothermus marinus. The POTRA5 domain binds BamD between its tetratricopeptide repeats 3 and 4. The interface structural elements are conserved in the Escherichia coli proteins, which allowed structure validation by mutagenesis and disulfide crosslinking in E. coli. Furthermore, the interface is consistent with previously reported mutations that impair BamA-BamD binding. The structure serves as a linchpin to generate a BAM model where POTRA domains and BamD form an elongated periplasmic ring adjacent to the membrane with a central cavity approximately 30 x 60 A wide. We propose that nascent OMPs bind this periplasmic ring prior to insertion and folding by BAM. The Structure of a BamA-BamD Fusion Illuminates the Architecture of the beta-Barrel Assembly Machine Core.,Bergal HT, Hopkins AH, Metzner SI, Sousa MC Structure. 2015 Dec 29. pii: S0969-2126(15)00508-0. doi:, 10.1016/j.str.2015.10.030. PMID:26749448[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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