1f76

<table><tr><td colspan='2'>[[1f76]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1F76 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1F76 FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene>, <scene name='pdbligand=FMT:FORMIC+ACID'>FMT</scene>, <scene name='pdbligand=ORO:OROTIC+ACID'>ORO</scene></td></tr>

<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Dihydroorotate_dehydrogenase_(quinone) Dihydroorotate dehydrogenase (quinone)], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.3.5.2 1.3.5.2] </span></td></tr>

[[https://www.uniprot.org/uniprot/PYRD_ECOLI PYRD_ECOLI]] Catalyzes the conversion of dihydroorotate to orotate with quinone as electron acceptor.<ref>PMID:10074342</ref>

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== Publication Abstract from PubMed ==

The flavoenzymes dihydroorotate dehydrogenases (DHODs) catalyze the fourth and only redox step in the de novo biosynthesis of UMP. Enzymes belonging to class 2, according to their amino acid sequence, are characterized by having a serine residue as the catalytic base and a longer N terminus. The structure of class 2 E. coli DHOD, determined by MAD phasing, showed that the N-terminal extension forms a separate domain. The catalytic serine residue has an environment differing from the equivalent cysteine in class 1 DHODs. Significant differences between the two classes of DHODs were identified by comparison of the E. coli DHOD with the other known DHOD structures, and differences with the class 2 human DHOD explain the variation in their inhibitors.

E. coli dihydroorotate dehydrogenase reveals structural and functional distinctions between different classes of dihydroorotate dehydrogenases.,Norager S, Jensen KF, Bjornberg O, Larsen S Structure. 2002 Sep;10(9):1211-23. PMID:12220493<ref>PMID:12220493</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 1f76" style="background-color:#fffaf0;"></div>

[[Category: Bjornberg, O]]

[[Category: Jensen, K F]]

[[Category: Larsen, S]]

[[Category: Norager, S]]

[[Category: Oxidoreductase]]