View source for 3ppn


==Structures of the substrate-binding protein provide insights into the multiple compatible solutes binding specificities of Bacillus subtilis ABC transporter OpuC==
<StructureSection load='3ppn' size='340' side='right'caption='[[3ppn]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3ppn]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/"vibrio_subtilis"_ehrenberg_1835 "vibrio subtilis" ehrenberg 1835]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3PPN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3PPN FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3ppo|3ppo]], [[3ppp|3ppp]], [[3ppq|3ppq]], [[3ppr|3ppr]]</div></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">opuCC ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1423 "Vibrio subtilis" Ehrenberg 1835])</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3ppn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ppn OCA], [https://pdbe.org/3ppn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ppn RCSB], [https://www.ebi.ac.uk/pdbsum/3ppn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ppn ProSAT]</span></td></tr>
</table>
== Function ==
[[https://www.uniprot.org/uniprot/OPUCC_BACSU OPUCC_BACSU]] Member of a high affinity multicomponent binding-protein-dependent transport system for glycine betaine, carnitine, and choline.<ref>PMID:10216873</ref> <ref>PMID:8752321</ref>  
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The compatible solute ATP-binding cassette (ABC) transporters are indispensable for acquiring a variety of compatible solutes under osmotic stress in Bacillus subtilis. The substrate-binding protein OpuCC of the ABC transporter OpuC can recognize a broad spectrum of compatible solutes, compared to its 70% sequence-identical paralog OpuBC that can solely bind choline. To explore the structural basis of this difference of substrate specificity, we determined crystal structures of OpuCC in the apo-form and in complex with carnitine, glycine betaine, choline and ectoine, respectively. OpuCC is composed of two alpha/beta/alpha globular sandwich domains linked by two hinge regions, with substrate-binding pocket located at the inter-domain cleft. Upon substrate-binding, the two domains shift towards each other to trap the substrate. Comparative structural analysis revealed a plastic pocket that fits various compatible solutes, which attributes the multiple-substrate binding property to OpuCC. This plasticity is a gain-of-function via a single-residue mutation of Thr94 in OpuCC versus Asp96 in OpuBC.

Structures of the substrate-binding protein provide insights into the multiple compatible solutes binding specificities of Bacillus subtilis ABC transporter OpuC.,Du Y, Shi WW, He YX, Yang YH, Zhou CZ, Chen Y Biochem J. 2011 Mar 3. PMID:21366542<ref>PMID:21366542</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3ppn" style="background-color:#fffaf0;"></div>

==See Also==
*[[ABC transporter 3D structures|ABC transporter 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Vibrio subtilis ehrenberg 1835]]
[[Category: Large Structures]]
[[Category: Chen, Y]]
[[Category: Du, Y]]
[[Category: He, Y X]]
[[Category: Shi, W W]]
[[Category: Yang, Y H]]
[[Category: Zhou, C Z]]
[[Category: Alpha-beta-alpha sandwich]]
[[Category: Compatible solute]]
[[Category: Osmoprotectant]]
[[Category: Transport protein]]