3mc8

<StructureSection load='3mc8' size='340' side='right' caption='[[3mc8]], [[Resolution|resolution]] 2.59&Aring;' scene=''>

<table><tr><td colspan='2'>[[3mc8]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Anabaena_7120 Anabaena 7120]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3MC8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3MC8 FirstGlance]. <br>

</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3mc9|3mc9]]</td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">alr2269 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=103690 Anabaena 7120])</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=3mc8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3mc8 OCA], [http://pdbe.org/3mc8 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3mc8 RCSB], [http://www.ebi.ac.uk/pdbsum/3mc8 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3mc8 ProSAT]</span></td></tr>

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== Publication Abstract from PubMed ==

Proteins of the Omp85 family are conserved in all kingdoms of life. They mediate protein transport across or protein insertion into membranes and reside in the outer membranes of Gram-negative bacteria, mitochondria, and chloroplasts. Omp85 proteins contain a C-terminal transmembrane beta-barrel and a soluble N terminus with a varying number of polypeptide-transport-associated or POTRA domains. Here we investigate Omp85 from the cyanobacterium Anabaena sp. PCC 7120. The crystallographic three-dimensional structure of the N-terminal region shows three POTRA domains, here named P1 to P3 from the N terminus. Molecular dynamics simulations revealed a hinge between P1 and P2 but in contrast show that P2 and P3 are fixed in orientation. The P2-P3 arrangement is identical as seen for the POTRA domains from proteobacterial FhaC, suggesting this orientation is a conserved feature. Furthermore, we define interfaces for protein-protein interaction in P1 and P2. P3 possesses an extended loop unique to cyanobacteria and plantae, which influences pore properties as shown by deletion. It now becomes clear how variations in structure of individual POTRA domains, as well as the different number of POTRA domains with both rigid and flexible connections make the N termini of Omp85 proteins versatile adaptors for a plentitude of functions.

Conserved properties of polypeptide transport-associated (POTRA) domains derived from cyanobacterial Omp85.,Koenig P, Mirus O, Haarmann R, Sommer MS, Sinning I, Schleiff E, Tews I J Biol Chem. 2010 Jun 4;285(23):18016-24. Epub 2010 Mar 26. PMID:20348103<ref>PMID:20348103</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 3mc8" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Anabaena 7120]]

[[Category: Koenig, P]]

[[Category: Schleiff, E]]

[[Category: Sinning, I]]

[[Category: Tews, I]]

[[Category: Protein membrane transport]]