3iwz

<table><tr><td colspan='2'>[[3iwz]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Xance Xance]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3IWZ OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=3IWZ FirstGlance]. <br>

</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=3iwz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3iwz OCA], [http://pdbe.org/3iwz PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3iwz RCSB], [http://www.ebi.ac.uk/pdbsum/3iwz PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3iwz ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/CLP_XANCP CLP_XANCP]] Global transcriptional regulator that regulates virulence factors production by activating or repressing the expression of a large set of genes in diffusible signal factor (DSF) pathway. It includes, among others, genes involved in extracellular polysaccharide (EPS) synthesis, flagellum synthesis, protein and fatty acid metabolism, multidrug resistance, iron uptake or genes encoding extracellular enzymes, membrane components and a few transcription factors. Regulation can be direct or indirect, via regulation of other transcriptional regulators. Not involved in DSF-mediated biofilm dispersal.<ref>PMID:17378922</ref>

<div style="background-color:#fffaf0;">

== Publication Abstract from PubMed ==

Cyclic-di-GMP [bis-(3'-5')-cyclic diguanosine monophosphate] controls a wide range of functions in eubacteria, yet little is known about the underlying regulatory mechanisms. In the plant pathogen Xanthomonas campestris, expression of a subset of virulence genes is regulated by c-di-GMP and also by the CAP (catabolite activation protein)-like protein XcCLP, a global regulator in the CRP/FNR superfamily. Here, we report structural and functional insights into the interplay between XcCLP and c-di-GMP in regulation of gene expression. XcCLP bound target promoter DNA with submicromolar affinity in the absence of any ligand. This DNA-binding capability was abrogated by c-di-GMP, which bound to XcCLP with micromolar affinity. The crystal structure of XcCLP showed that the protein adopted an intrinsically active conformation for DNA binding. Alteration of residues of XcCLP implicated in c-di-GMP binding through modeling studies caused a substantial reduction in binding affinity for the nucleotide and rendered DNA binding by these variant proteins insensitive to inhibition by c-di-GMP. Together, these findings reveal the structural mechanism behind a novel class of c-di-GMP effector proteins in the CRP/FNR superfamily and indicate that XcCLP regulates bacterial virulence gene expression in a manner negatively controlled by the c-di-GMP concentrations.

The cAMP receptor-like protein CLP is a novel c-di-GMP receptor linking cell-cell signaling to virulence gene expression in Xanthomonas campestris.,Chin KH, Lee YC, Tu ZL, Chen CH, Tseng YH, Yang JM, Ryan RP, McCarthy Y, Dow JM, Wang AH, Chou SH J Mol Biol. 2010 Feb 26;396(3):646-62. Epub 2009 Dec 18. PMID:20004667<ref>PMID:20004667</ref>

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

</div>

<div class="pdbe-citations 3iwz" style="background-color:#fffaf0;"></div>

[[Category: Xance]]

[[Category: Chin, K H]]

[[Category: Chou, S H]]

[[Category: Dow, J M]]

[[Category: Tseng, Y H]]

[[Category: Tu, Z L]]

[[Category: Wang, A H.J]]

[[Category: Xcc]]