1maf

<table><tr><td colspan='2'>[[1maf]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_25364 Atcc 25364]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MAF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1MAF FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HDZ:NITROGEN+MOLECULE'>HDZ</scene></td></tr>

<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=0AF:7-HYDROXY-L-TRYPTOPHAN'>0AF</scene></td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Methylamine_dehydrogenase_(amicyanin) Methylamine dehydrogenase (amicyanin)], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.4.9.1 1.4.9.1] </span></td></tr>

[[https://www.uniprot.org/uniprot/DHML_PARVE DHML_PARVE]] Methylamine dehydrogenase carries out the oxidation of methylamine. Electrons are passed from methylamine dehydrogenase to amicyanin. [[https://www.uniprot.org/uniprot/DHMH_PARVE DHMH_PARVE]] Methylamine dehydrogenase carries out the oxidation of methylamine. Electrons are passed from methylamine dehydrogenase to amicyanin.

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== Publication Abstract from PubMed ==

To identify the reactive part of the orthoquinone function of the tryptophan-derived cofactor found in methylamine dehydrogenase (MADH), we have determined the crystal structures of MADH from Thiobacillus versutus inhibited by methylhydrazine and (2,2,2-trifluoroethyl)hydrazine. Extra electron density attached to C6 of the tryptophyl tryptophanquinone cofactor shows that this atom and not C7 is the reactive part of the ortho-quinone moiety. The density retained after hydrazine inhibition is much less extensive than expected, however, suggesting that partial breakdown of the inhibitors after reaction with the cofactor may take place. A detailed description is presented of the cofactor environment in an improved model of MADH which now includes information from the recently determined gene sequence of the cofactor-containing subunit [Ubbink, M., van Kleef, M.A.G., Kleinjan, D., Hoitink, C.W.G., Huitema, F., Beintema, J.J., Duine, J.A., &amp; Canters, G.W. (1991) Eur. J. Biochem. 202, 1003-1012]. We hypothesize that Asp76 is responsible for proton abstraction from the alpha-carbon of the substrate during catalysis.

Active site structure of methylamine dehydrogenase: hydrazines identify C6 as the reactive site of the tryptophan-derived quinone cofactor.,Huizinga EG, van Zanten BA, Duine JA, Jongejan JA, Huitema F, Wilson KS, Hol WG Biochemistry. 1992 Oct 13;31(40):9789-95. PMID:1390754<ref>PMID:1390754</ref>

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

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== References ==

<references/>

[[Category: Atcc 25364]]

[[Category: Hol, W G.J]]

[[Category: Huizinga, E G]]

[[Category: Vellieux, F M.D]]