View source for 8wlb


==X-ray structure of Enterobacter cloacae allose-binding protein in complex with D-psicose==
<StructureSection load='8wlb' size='340' side='right'caption='[[8wlb]], [[Resolution|resolution]] 1.71&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8wlb]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Enterobacter_cloacae Enterobacter cloacae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8WLB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8WLB 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]] 1.71&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=WEB:alpha-D-psicopyranose'>WEB</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=8wlb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8wlb OCA], [https://pdbe.org/8wlb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8wlb RCSB], [https://www.ebi.ac.uk/pdbsum/8wlb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8wlb ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/A0A7G3F0C7_ENTCL A0A7G3F0C7_ENTCL] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
d-Allose is an aldohexose of the C3-epimer of d-glucose, existing in very small amounts in nature, called a rare sugar. The operon responsible for d-allose metabolism, the allose operon, was found in several bacteria, which consists of seven genes: alsR, alsB, alsA, alsC, alsE, alsK, and rpiB. To understand the biological implication of the allose operon utilizing a rare sugar of d-allose as a carbon source, it is important to clarify whether the allose operon functions specifically for d-allose or also functions for other ligands. It was proposed that the allose operon can function for d-ribose, which is essential as a component of nucleotides and abundant in nature. Allose-binding protein, AlsB, coded in the allose operon, is thought to capture a ligand outside the cell, and is expected to show high affinity for the specific ligand. X-ray structure determinations of Enterobacter cloacae AlsB (EtcAlsB) in ligand-free form, and in complexes with d-allose, d-ribose, and d-allulose, and measurements of the thermal parameters of the complex formation using an isothermal titration calorimeter were performed. The results demonstrated that EtcAlsB has a unique recognition mechanism for high affinity to d-allose by changing its conformation from an open to a closed form depending on d-allose-binding, and that the binding of d-ribose to EtcAlsB could not induce a completely closed form but an intermediate form, explaining the low affinity for d-ribose.

X-ray structures of Enterobacter cloacae allose-binding protein in complexes with monosaccharides demonstrate its unique recognition mechanism for high affinity to allose.,Kamitori S Biochem Biophys Res Commun. 2023 Nov 19;682:187-192. doi: , 10.1016/j.bbrc.2023.10.016. Epub 2023 Oct 5. PMID:37820454<ref>PMID:37820454</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 8wlb" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Enterobacter cloacae]]
[[Category: Large Structures]]
[[Category: Kamitori S]]