View source for 7bcr


==Crystal structure of the sugar acid binding protein DctPAm from Advenella mimigardefordensis strain DPN7T in complex with galactonate==
<StructureSection load='7bcr' size='340' side='right'caption='[[7bcr]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7bcr]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Advenella_mimigardefordensis_DPN7 Advenella mimigardefordensis DPN7]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7BCR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7BCR 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]] 2&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=2Q2:L-GALACTONIC+ACID'>2Q2</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=7bcr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7bcr OCA], [https://pdbe.org/7bcr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7bcr RCSB], [https://www.ebi.ac.uk/pdbsum/7bcr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7bcr ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/R4JTF7_ADVMD R4JTF7_ADVMD] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Recently, CxaP, a sugar acid substrate binding protein (SBP) from Advenella mimigardefordensis strain DPN7(T) , was identified as part of a novel sugar uptake strategy. In the present study, the protein was successfully crystallized. Although several SBP structures of tripartite ATP-independent periplasmic transporters have already been solved, this is the first structure of an SBP accepting multiple sugar acid ligands. Protein crystals were obtained with bound d-xylonic acid, d-fuconic acid d-galactonic and d-gluconic acid, respectively. The protein shows the typical structure of an SBP of a tripartite ATP-independent periplasmic transporter consisting of two domains linked by a hinge and spanned by a long alpha-helix. By analysis of the structure, the substrate binding site of the protein was identified. The carboxylic group of the sugar acids interacts with Arg175, whereas the coordination of the hydroxylic groups at positions C2 and C3 is most probably realized by Arg154 and Asn151. Furthermore, it was observed that 2-keto-3-deoxy-d-gluconic acid is bound in protein crystals that were crystallized without the addition of any ligand, indicating that this molecule is prebound to the protein and is displaced by the other ligands if they are available. DATABASE: Structural data of CxaP complexes are available in the worldwide Protein Data Bank (https://www.rcsb.org) under the accession codes 7BBR (2-keto-3-deoxy-d-gluconic acid), 7BCR (d-galactonic acid), 7BCN (d-xylonic acid), 7BCO (d-fuconic acid) and 7BCP (d-gluconic acid).

Crystal structure of the sugar acid-binding protein CxaP from a TRAP transporter in Advenella mimigardefordensis strain DPN7(T).,Schafer L, Meinert-Berning C, Kobus S, Hoppner A, Smits SHJ, Steinbuchel A FEBS J. 2021 Feb 25. doi: 10.1111/febs.15789. PMID:33630388<ref>PMID:33630388</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 7bcr" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Advenella mimigardefordensis DPN7]]
[[Category: Large Structures]]
[[Category: Hoeppner A]]
[[Category: Kobus S]]
[[Category: Meinert C]]
[[Category: Schaefer L]]
[[Category: Smits SH]]
[[Category: Steinbuechel A]]