1jxi

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

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HMH:4-AMINO-5-HYDROXYMETHYL-2-METHYLPYRIMIDINE'>HMH</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Phosphomethylpyrimidine_kinase Phosphomethylpyrimidine kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.4.7 2.7.4.7] </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=1jxi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jxi OCA], [http://pdbe.org/1jxi PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1jxi RCSB], [http://www.ebi.ac.uk/pdbsum/1jxi PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1jxi ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/THID_SALTY THID_SALTY]] Catalyzes the phosphorylation of hydroxymethylpyrimidine phosphate (HMP-P) to HMP-PP, and of HMP to HMP-P (By similarity).

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== Publication Abstract from PubMed ==

The crystal structures of Salmonella typhimurium 4-amino-5-hydroxymethyl-2-methylpyrimidine phosphate kinase (HMPP kinase) and its complex with substrate HMP have been determined. HMPP kinase catalyzes two separate ATP-dependent phosphorylation reactions and is an essential enzyme in the thiamin biosynthetic pathway. HMPP kinase is a homodimer with one active site per monomer and is structurally homologous to members of the ribokinase family. A comparison of the structure of HMPP kinase with other members of the ribokinase family suggests an evolutionary progression. Modeling studies suggest that HMPP kinase catalyzes both of its phosphorylation reactions using in-line displacement mechanisms. We propose that the active site accommodates the two separate reactions by providing two different binding modes for the phosphate group of HMP phosphate.

Crystal structure of 4-amino-5-hydroxymethyl-2-methylpyrimidine phosphate kinase from Salmonella typhimurium at 2.3 A resolution.,Cheng G, Bennett EM, Begley TP, Ealick SE Structure. 2002 Feb;10(2):225-35. PMID:11839308<ref>PMID:11839308</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 1jxi" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Phosphomethylpyrimidine kinase]]

[[Category: Begley, T P]]

[[Category: Bennett, E M]]

[[Category: Cheng, G]]

[[Category: Ealick, S E]]

[[Category: Transferase]]