1mrn

<table><tr><td colspan='2'>[[1mrn]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_tuberculosis"_(zopf_1883)_klein_1884 "bacillus tuberculosis" (zopf 1883) klein 1884]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MRN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1MRN FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=T5A:P1-(5-ADENOSYL)P5-(5-THYMIDYL)PENTAPHOSPHATE'>T5A</scene></td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/dTMP_kinase dTMP kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.4.9 2.7.4.9] </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=1mrn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1mrn OCA], [http://pdbe.org/1mrn PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1mrn RCSB], [http://www.ebi.ac.uk/pdbsum/1mrn PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1mrn ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/KTHY_MYCTU KTHY_MYCTU]] Catalyzes the reversible phosphorylation of deoxythymidine monophosphate (dTMP) to deoxythymidine diphosphate (dTDP), using ATP as its preferred phosphoryl donor. Situated at the junction of both de novo and salvage pathways of deoxythymidine triphosphate (dTTP) synthesis, is essential for DNA synthesis and cellular growth. Has a broad specificity for nucleoside triphosphates, being highly active with ATP or dATP as phosphate donors, and less active with ITP, GTP, CTP and UTP.[HAMAP-Rule:MF_00165]

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== Publication Abstract from PubMed ==

The chemical synthesis of new compounds designed as inhibitors of Mycobacterium tuberculosis TMP kinase (TMPK) is reported. The synthesis concerns TMP analogues modified at the 5-position of the thymine ring as well as a novel compound with a six-membered sugar ring. The binding properties of the analogues are compared with the known inhibitor azido-TMP, which is postulated here to work by excluding the TMP-bound Mg(2+) ion. The crystallographic structure of the complex of one of the compounds, 5-CH(2)OH-dUMP, with TMPK has been determined at 2.0 A. It reveals a major conformation for the hydroxyl group in contact with a water molecule and a minor conformation pointing toward Ser(99). Looking for a role for Ser(99), we have identified an unusual catalytic triad, or a proton wire, made of strictly conserved residues (including Glu(6), Ser(99), Arg(95), and Asp(9)) that probably serves to protonate the transferred PO(3) group. The crystallographic structure of the commercially available bisubstrate analogue P(1)-(adenosine-5')-P(5)-(thymidine-5')-pentaphosphate bound to TMPK is also reported at 2.45 A and reveals an alternative binding pocket for the adenine moiety of the molecule compared with what is observed either in the Escherichia coli or in the yeast enzyme structures. This alternative binding pocket opens a way for the design of a new family of specific inhibitors.

Enzymatic and structural analysis of inhibitors designed against Mycobacterium tuberculosis thymidylate kinase. New insights into the phosphoryl transfer mechanism.,Haouz A, Vanheusden V, Munier-Lehmann H, Froeyen M, Herdewijn P, Van Calenbergh S, Delarue M J Biol Chem. 2003 Feb 14;278(7):4963-71. Epub 2002 Nov 25. PMID:12454011<ref>PMID:12454011</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 1mrn" style="background-color:#fffaf0;"></div>

*[[Thymidylate kinase|Thymidylate kinase]]

[[Category: DTMP kinase]]

[[Category: Calenbergh, S Van]]

[[Category: Delarue, M]]

[[Category: Froeyen, M]]

[[Category: Haouz, A]]

[[Category: Herdewijn, P]]

[[Category: Munier-Lehmann, H]]

[[Category: Vanheusden, V]]

[[Category: Kinase]]

[[Category: Transferase]]