6mvh

<table><tr><td colspan='2'>[[6mvh]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Dsm_16839 Dsm 16839]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6MVH OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6MVH FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene></td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">lacZ_3, ERS852391_02721 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=301301 DSM 16839])</td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Beta-galactosidase Beta-galactosidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.23 3.2.1.23] </span></td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6mvh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6mvh OCA], [http://pdbe.org/6mvh PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6mvh RCSB], [http://www.ebi.ac.uk/pdbsum/6mvh PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6mvh ProSAT]</span></td></tr>

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== Publication Abstract from PubMed ==

The human gut microbiota encodes beta-glucuronidases (GUS) that play key roles in health and disease via the metabolism of glucuronate-containing carbohydrates and drugs. Hundreds of putative bacterial GUS enzymes have been identified by metagenomic analysis of the human gut microbiome, but less than 10% have characterized structures and functions. Here we describe a set of unique gut microbial GUS enzymes that bind flavin mononucleotide (FMN). First, we show using mass spectrometry, isothermal titration calorimetry, and x-ray crystallography that a purified GUS from the gut commensal microbe Faecalibacterium prausnitzii binds to FMN on a surface groove located 30A away from the active site. Second, utilizing structural and functional data from this FMN-binding GUS, we analyzed the 279 unique GUS sequences from the human microbiome project database and identified 14 putative FMN-binding GUSs. We characterized four of these hits and solved the structure of two, the GUSs from Ruminococcus gnavus and Roseburia hominis, which confirmed that these are FMN binders. Third, binding and kinetic analysis of the FMN-binding site mutants of these five GUSs show that they utilize a conserved site to bind FMN that is not essential for GUS activity, but can affect KM. Lastly, a comprehensive structural review of the PDB reveals that the FMN-binding site employed by these enzymes is unlike any structurally characterized FMN-binders to date. These findings reveal the first instance of an FMN-binding glycoside hydrolase and suggest a potential link between FMN and carbohydrate metabolism in the human gut microbiota.

Discovery and Characterization of FMN-Binding beta-Glucuronidases in the Human Gut Microbiome.,Pellock SJ, Walton WG, Ervin SM, Torres-Rivera D, Creekmore BC, Bergan G, Dunn ZD, Li B, Tripathy A, Redinbo MR J Mol Biol. 2019 Jan 15. pii: S0022-2836(19)30011-7. doi:, 10.1016/j.jmb.2019.01.013. PMID:30658055<ref>PMID:30658055</ref>

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

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== References ==

<references/>

[[Category: Beta-galactosidase]]

[[Category: Dsm 16839]]

[[Category: Pellock, S J]]

[[Category: Redinbo, M R]]

[[Category: Beta-glucuronidase]]

[[Category: Hydrolase]]