View source for 4xyg


==GRANULICELLA M. FORMATE DEHYDROGENASE (FDH)==
<StructureSection load='4xyg' size='340' side='right'caption='[[4xyg]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4xyg]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Granulicella_mallensis_MP5ACTX8 Granulicella mallensis MP5ACTX8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4XYG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4XYG 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]] 1.7&#8491;</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=4xyg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4xyg OCA], [https://pdbe.org/4xyg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4xyg RCSB], [https://www.ebi.ac.uk/pdbsum/4xyg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4xyg ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/G8NVB5_GRAMM G8NVB5_GRAMM] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Formate dehydrogenases (FDHs) are considered particularly useful enzymes in biocatalysis when the regeneration of the cofactor NAD(P)H is required, that is, in chiral synthesis with dehydrogenases. Their utilization is however limited to the recycling of NAD+, since all (apart one) of the FDHs characterized so far are strictly specific for this cofactor, and this is a major drawback for their otherwise wide applicability. Despite the many attempts performed to modify cofactor specificity by protein engineering different NAD+-dependent FDHs, in the general practice, glucose or phosphite dehydrogenases are chosen for the recycling of NADP+. We report on the functional and structural characterization of a new FDH, GraFDH, identified by mining the genome of the extremophile prokaryote Granulicella mallensis MP5ACTX8. The new enzyme displays a valuable stability in the presence of many organic cosolvents as well as double cofactor specificity, with NADP+ preferred over NAD+ at acidic pH values, at which it also shows the highest stability. The quite low affinities for both cofactors as well as for the substrate formate indicate, however, that the native enzyme requires optimization to be applied as biocatalytic tool. We also determined the crystal structure of GraFDH both as apoprotein and as holoprotein, either in complex with NAD+ or NADP+. Noticeably, the latter represents the first structure of an FDH enzyme in complex with NADP+. This fine picture of the structural determinants involved in cofactor selectivity will possibly boost protein engineering of the new enzyme or other homolog FDHs in view of their biocatalytic exploitation for NADP+ recycling.

Structural basis for double cofactor specificity in a new formate dehydrogenase from the acidobacterium Granulicella mallensis MP5ACTX8.,Fogal S, Beneventi E, Cendron L, Bergantino E Appl Microbiol Biotechnol. 2015 Jun 24. PMID:26104866<ref>PMID:26104866</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4xyg" style="background-color:#fffaf0;"></div>

==See Also==
*[[Formate dehydrogenase 3D structures|Formate dehydrogenase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Granulicella mallensis MP5ACTX8]]
[[Category: Large Structures]]
[[Category: Beneventi E]]
[[Category: Bergantino E]]
[[Category: Cendron L]]
[[Category: Fogal S]]