View source for 3sg0


==The crystal structure of an extracellular ligand-binding receptor from Rhodopseudomonas palustris HaA2==
<StructureSection load='3sg0' size='340' side='right'caption='[[3sg0]], [[Resolution|resolution]] 1.20&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3sg0]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Rhodopseudomonas_palustris_HaA2 Rhodopseudomonas palustris HaA2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3SG0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3SG0 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.201&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=173:BENZOYL-FORMIC+ACID'>173</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></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=3sg0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3sg0 OCA], [https://pdbe.org/3sg0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3sg0 RCSB], [https://www.ebi.ac.uk/pdbsum/3sg0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3sg0 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q2IR47_RHOP2 Q2IR47_RHOP2] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Lignin comprises 15-25% of plant biomass and represents a major environmental carbon source for utilization by soil microorganisms. Access to this energy resource requires the action of fungal and bacterial enzymes to break down the lignin polymer into a complex assortment of aromatic compounds that can be transported into the cells. To improve our understanding of the utilization of lignin by microorganisms, we characterized the molecular properties of solute binding proteins of ATP-binding cassette transporter proteins that interact with these compounds. A combination of functional screens and structural studies characterized the binding specificity of the solute binding proteins for aromatic compounds derived from lignin such as p-coumarate, 3-phenylpropionic acid and compounds with more complex ring substitutions. A ligand screen based on thermal stabilization identified several binding protein clusters that exhibit preferences based on the size or number of aromatic ring substituents. Multiple X-ray crystal structures of protein-ligand complexes for these clusters identified the molecular basis of the binding specificity for the lignin-derived aromatic compounds. The screens and structural data provide new functional assignments for these solute-binding proteins which can be used to infer their transport specificity. This knowledge of the functional roles and molecular binding specificity of these proteins will support the identification of the specific enzymes and regulatory proteins of peripheral pathways that funnel these compounds to central metabolic pathways and will improve the predictive power of sequence-based functional annotation methods for this family of proteins. (c) Proteins 2013;. (c) 2013 Wiley Periodicals, Inc.

Structural and functional characterization of solute binding proteins for aromatic compounds derived from lignin: p-coumaric acid and related aromatic acids.,Tan K, Chang C, Cuff M, Osipiuk J, Landorf E, Mack JC, Zerbs S, Joachimiak A, Collart FR Proteins. 2013 Apr 22. doi: 10.1002/prot.24305. PMID:23606130<ref>PMID:23606130</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3sg0" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Rhodopseudomonas palustris HaA2]]
[[Category: Collart F]]
[[Category: Joachimiak A]]
[[Category: Mack JC]]
[[Category: Tan K]]
[[Category: Zerbs S]]