View source for 3kl6

==Discovery of Tetrahydropyrimidin-2(1H)-one derivative TAK-442: A potent, selective and orally active factor Xa inhibitor==
<StructureSection load='3kl6' size='340' side='right' caption='[[3kl6]], [[Resolution|resolution]] 1.45&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3kl6]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3KL6 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3KL6 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=443:1-(1-{(2S)-3-[(6-CHLORONAPHTHALEN-2-YL)SULFONYL]-2-HYDROXYPROPANOYL}PIPERIDIN-4-YL)TETRAHYDROPYRIMIDIN-2(1H)-ONE'>443</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">F10 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Coagulation_factor_Xa Coagulation factor Xa], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.6 3.4.21.6] </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=3kl6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kl6 OCA], [http://pdbe.org/3kl6 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3kl6 RCSB], [http://www.ebi.ac.uk/pdbsum/3kl6 PDBsum]</span></td></tr>
</table>
== Disease ==
[[http://www.uniprot.org/uniprot/FA10_HUMAN FA10_HUMAN]] Defects in F10 are the cause of factor X deficiency (FA10D) [MIM:[http://omim.org/entry/227600 227600]]. A hemorrhagic disease with variable presentation. Affected individuals can manifest prolonged nasal and mucosal hemorrhage, menorrhagia, hematuria, and occasionally hemarthrosis. Some patients do not have clinical bleeding diathesis.<ref>PMID:2790181</ref> <ref>PMID:1973167</ref> <ref>PMID:1985698</ref> <ref>PMID:7669671</ref> <ref>PMID:8529633</ref> <ref>PMID:7860069</ref> <ref>PMID:8845463</ref> <ref>PMID:8910490</ref> <ref>PMID:10468877</ref> <ref>PMID:10746568</ref> <ref>PMID:10739379</ref> <ref>PMID:11248282</ref> <ref>PMID:11728527</ref> <ref>PMID:12945883</ref> <ref>PMID:15650540</ref> <ref>PMID:17393015</ref> <ref>PMID:19135706</ref>  
== Function ==
[[http://www.uniprot.org/uniprot/FA10_HUMAN FA10_HUMAN]] Factor Xa is a vitamin K-dependent glycoprotein that converts prothrombin to thrombin in the presence of factor Va, calcium and phospholipid during blood clotting. 
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/kl/3kl6_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3kl6 ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Coagulation enzyme factor Xa (FXa) is a particularly promising target for the development of new anticoagulant agents. We previously reported the imidazo[1,5-c]imidazol-3-one derivative 1 as a potent and orally active FXa inhibitor. However, it was found that 1 predominantly undergoes hydrolysis upon incubation with human liver microsomes, and the human specific metabolic pathway made it difficult to predict the human pharmacokinetics. To address this issue, our synthetic efforts were focused on modification of the imidazo[1,5-c]imidazol-3-one moiety of the active metabolite 3a, derived from 1, which resulted in the discovery of the tetrahydropyrimidin-2(1H)-one derivative 5k as a highly potent and selective FXa inhibitor. Compound 5k showed no detectable amide bond cleavage in human liver microsomes, exhibited a good pharmacokinetic profile in monkeys, and had a potent antithrombotic efficacy in a rabbit model without prolongation of bleeding time. Compound 5k is currently under clinical development with the code name TAK-442.

Discovery of a tetrahydropyrimidin-2(1H)-one derivative (TAK-442) as a potent, selective, and orally active factor Xa inhibitor.,Fujimoto T, Imaeda Y, Konishi N, Hiroe K, Kawamura M, Textor GP, Aertgeerts K, Kubo K J Med Chem. 2010 May 13;53(9):3517-31. PMID:20355714<ref>PMID:20355714</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 3kl6" style="background-color:#fffaf0;"></div>

==See Also==
*[[Factor Xa|Factor Xa]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Coagulation factor Xa]]
[[Category: Human]]
[[Category: Aertgeerts, K]]
[[Category: Blood coagulation]]
[[Category: Cleavage on pair of basic residue]]
[[Category: Coagulation factor xa]]
[[Category: Disulfide bond]]
[[Category: Egf-like domain]]
[[Category: Gamma-carboxyglutamic acid]]
[[Category: Glycoprotein]]
[[Category: Hydrolase]]
[[Category: Hydroxylation]]
[[Category: Protease]]
[[Category: Secreted]]
[[Category: Serine protease]]
[[Category: Zymogen]]