1ozb

<table><tr><td colspan='2'>[[1ozb]] is a 10 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacterium_influenzae"_lehmann_and_neumann_1896 "bacterium influenzae" lehmann and neumann 1896]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1OZB OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1OZB FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>

<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1fx3|1fx3]], [[1m6n|1m6n]], [[1nl3|1nl3]]</div></td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">SECB OR HI0743 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=727 "Bacterium influenzae" Lehmann and Neumann 1896]), SECA OR HI0909 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=727 "Bacterium influenzae" Lehmann and Neumann 1896])</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1ozb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ozb OCA], [http://pdbe.org/1ozb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ozb RCSB], [http://www.ebi.ac.uk/pdbsum/1ozb PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1ozb ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/SECB_HAEIN SECB_HAEIN]] One of the proteins required for the normal export of preproteins out of the cell cytoplasm. It is a molecular chaperone that binds to a subset of precursor proteins, maintaining them in a translocation-competent state. It also specifically binds to its receptor SecA. [[http://www.uniprot.org/uniprot/SECA_HAEIN SECA_HAEIN]] Part of the Sec protein translocase complex. Interacts with the SecYEG preprotein conducting channel. Has a central role in coupling the hydrolysis of ATP to the transfer of proteins into and across the cell membrane, serving both as a receptor for the preprotein-SecB complex and as an ATP-driven molecular motor driving the stepwise translocation of polypeptide chains across the membrane (By similarity).[HAMAP-Rule:MF_01382]

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== Publication Abstract from PubMed ==

SecB is a bacterial chaperone involved in directing pre-protein to the translocation pathway by its specific interaction with the peripheral membrane ATPase SecA. The SecB-binding site on SecA is located at its C terminus and consists of a stretch of highly conserved residues. The crystal structure of SecB in complex with the C-terminal 27 amino acids of SecA from Haemophilus influenzae shows that the SecA peptide is structured as a CCCH zinc-binding motif. One SecB tetramer is bound by two SecA peptides, and the interface involves primarily salt bridges and hydrogen bonding interactions. The structure explains the importance of the zinc-binding motif and conserved residues at the C terminus of SecA in its high-affinity binding with SecB. It also suggests a model of SecB-SecA interaction and its implication for the mechanism of pre-protein transfer in bacterial protein translocation.

Structural determinants of SecB recognition by SecA in bacterial protein translocation.,Zhou J, Xu Z Nat Struct Biol. 2003 Nov;10(11):942-7. Epub 2003 Sep 28. PMID:14517549<ref>PMID:14517549</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 1ozb" style="background-color:#fffaf0;"></div>

*[[Preprotein translocase|Preprotein translocase]]

== References ==

<references/>

[[Category: Bacterium influenzae lehmann and neumann 1896]]

[[Category: Xu, Z]]

[[Category: Zhou, J]]

[[Category: Zinc binding motif]]