3og5
From Proteopedia
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== Function == | == Function == | ||
[https://www.uniprot.org/uniprot/BAMA_ECOLI BAMA_ECOLI] Part of the outer membrane protein assembly complex, which is involved in assembly and insertion of beta-barrel proteins into the outer membrane. Constitutes, with BamD, the core component of the assembly machinery.<ref>PMID:15951436</ref> <ref>PMID:16102012</ref> <ref>PMID:16824102</ref> <ref>PMID:20378773</ref> <ref>PMID:21823654</ref> | [https://www.uniprot.org/uniprot/BAMA_ECOLI BAMA_ECOLI] Part of the outer membrane protein assembly complex, which is involved in assembly and insertion of beta-barrel proteins into the outer membrane. Constitutes, with BamD, the core component of the assembly machinery.<ref>PMID:15951436</ref> <ref>PMID:16102012</ref> <ref>PMID:16824102</ref> <ref>PMID:20378773</ref> <ref>PMID:21823654</ref> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Folding and insertion of beta-barrel outer membrane proteins (OMPs) is essential for Gram-negative bacteria. This process is mediated by the multiprotein complex BAM, composed of the essential beta-barrel OMP BamA and four lipoproteins (BamBCDE). The periplasmic domain of BamA is key for its function and contains five "polypeptide transport-associated" (POTRA) repeats. Here, we report the crystal structure of the POTRA4-5 tandem, containing the essential for BAM complex formation and cell viability POTRA5. The domain orientation observed in the crystal is validated by solution NMR and SAXS. Using previously determined structures of BamA POTRA1-4, we present a spliced model of the entire BamA periplasmic domain validated by SAXS. Solution scattering shows that conformational flexibility between POTRA2 and 3 gives rise to compact and extended conformations. The length of BamA in its extended conformation suggests that the protein may bridge the inner and outer membranes across the periplasmic space. | ||
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| + | Structure and flexibility of the complete periplasmic domain of BamA: the protein insertion machine of the outer membrane.,Gatzeva-Topalova PZ, Warner LR, Pardi A, Sousa MC Structure. 2010 Nov 10;18(11):1492-501. PMID:21070948<ref>PMID:21070948</ref> | ||
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| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 3og5" style="background-color:#fffaf0;"></div> | ||
==See Also== | ==See Also== | ||
Current revision
Crystal Structure of BamA POTRA45 tandem
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