1mgx

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{{STRUCTURE_1mgx| PDB=1mgx | SCENE= }}
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==COAGULATION FACTOR, MG(II), NMR, 7 STRUCTURES (BACKBONE ATOMS ONLY)==
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===COAGULATION FACTOR, MG(II), NMR, 7 STRUCTURES (BACKBONE ATOMS ONLY)===
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<StructureSection load='1mgx' size='340' side='right' caption='[[1mgx]], [[NMR_Ensembles_of_Models | 7 NMR models]]' scene=''>
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{{ABSTRACT_PUBMED_8663165}}
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1mgx]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MGX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1MGX FirstGlance]. <br>
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</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=CGU:GAMMA-CARBOXY-GLUTAMIC+ACID'>CGU</scene></td></tr>
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<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Coagulation_factor_IXa Coagulation factor IXa], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.22 3.4.21.22] </span></td></tr>
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<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=1mgx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1mgx OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1mgx RCSB], [http://www.ebi.ac.uk/pdbsum/1mgx PDBsum]</span></td></tr>
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</table>
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== Disease ==
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[[http://www.uniprot.org/uniprot/FA9_HUMAN FA9_HUMAN]] Defects in F9 are the cause of recessive X-linked hemophilia B (HEMB) [MIM:[http://omim.org/entry/306900 306900]]; also known as Christmas disease.<ref>PMID:8295821</ref> <ref>PMID:2592373</ref> <ref>PMID:2743975</ref> <ref>PMID:6603618</ref> <ref>PMID:3009023</ref> <ref>PMID:3790720</ref> <ref>PMID:3401602</ref> <ref>PMID:3243764</ref> <ref>PMID:2713493</ref> <ref>PMID:2714791</ref> <ref>PMID:2773937</ref> <ref>PMID:2775660</ref> <ref>PMID:2753873</ref> <ref>PMID:2738071</ref> <ref>PMID:2472424</ref> <ref>PMID:2339358</ref> <ref>PMID:2372509</ref> <ref>PMID:2162822</ref> <ref>PMID:1958666</ref> <ref>PMID:1902289</ref> <ref>PMID:1346975</ref> <ref>PMID:1615485</ref> <ref>PMID:8257988</ref> <ref>PMID:8076946</ref> <ref>PMID:8199596</ref> <ref>PMID:7981722</ref> <ref>PMID:8680410</ref> <ref>PMID:9222764</ref> <ref>PMID:9590153</ref> <ref>PMID:9452115</ref> <ref>PMID:9600455</ref> <ref>PMID:10698280</ref> <ref>PMID:10094553</ref> <ref>PMID:11122099</ref> <ref>PMID:12588353</ref> <ref>PMID:12604421</ref> Note=Mutations in position 43 (Oxford-3, San Dimas) and 46 (Cambridge) prevents cleavage of the propeptide, mutation in position 93 (Alabama) probably fails to bind to cell membranes, mutation in position 191 (Chapel-Hill) or in position 226 (Nagoya OR Hilo) prevent cleavage of the activation peptide. Defects in F9 are the cause of thrombophilia due to factor IX defect (THPH8) [MIM:[http://omim.org/entry/300807 300807]]. A hemostatic disorder characterized by a tendency to thrombosis.<ref>PMID:19846852</ref>
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== Function ==
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[[http://www.uniprot.org/uniprot/FA9_HUMAN FA9_HUMAN]] Factor IX is a vitamin K-dependent plasma protein that participates in the intrinsic pathway of blood coagulation by converting factor X to its active form in the presence of Ca(2+) ions, phospholipids, and factor VIIIa.
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The blood coagulation and regulatory proteins that contain gamma-carboxyglutamic acid are a part of a unique class of membrane binding proteins that require calcium for their interaction with cell membranes. Following protein biosynthesis, glutamic acids on these proteins are converted to gamma-carboxyglutamic acid (Gla) in a reaction that requires vitamin K as a cofactor. The vitamin K-dependent proteins undergo a conformational transition upon metal ion binding, but only calcium ions mediate protein-phospholipid interaction. To identify the site on Factor IX that is required for phospholipid binding, we have determined the three-dimensional structure of the Factor IX Gla domain bound to magnesium ions by NMR spectroscopy. By comparison of this structure to that of the Gla domain bound to calcium ions, we localize the membrane binding site to a highly ordered structure including residues 1-11 of the Gla domain. In the presence of Ca2+, Factor IX Gla domain peptides that contain the photoactivatable amino acid p-benzoyl-L-phenylalanine at positions 6 or 9 cross-link to phospholipid following irradiation, while peptides lacking this amino acid analog or with this analog at position 46 did not cross-link. These results indicate that the NH2 terminus of the Gla domain, specifically including leucine 6 and phenylalanine 9 in the hydrophobic patch, is the contact surface on Factor IX that interacts with the phospholipid bilayer.
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==Disease==
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Identification of the phospholipid binding site in the vitamin K-dependent blood coagulation protein factor IX.,Freedman SJ, Blostein MD, Baleja JD, Jacobs M, Furie BC, Furie B J Biol Chem. 1996 Jul 5;271(27):16227-36. PMID:8663165<ref>PMID:8663165</ref>
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[[http://www.uniprot.org/uniprot/FA9_HUMAN FA9_HUMAN]] Defects in F9 are the cause of recessive X-linked hemophilia B (HEMB) [MIM:[http://omim.org/entry/306900 306900]]; also known as Christmas disease.<ref>PMID:8295821</ref><ref>PMID:2592373</ref><ref>PMID:2743975</ref><ref>PMID:6603618</ref><ref>PMID:3009023</ref><ref>PMID:3790720</ref><ref>PMID:3401602</ref><ref>PMID:3243764</ref><ref>PMID:2713493</ref><ref>PMID:2714791</ref><ref>PMID:2773937</ref><ref>PMID:2775660</ref><ref>PMID:2753873</ref><ref>PMID:2738071</ref><ref>PMID:2472424</ref><ref>PMID:2339358</ref><ref>PMID:2372509</ref><ref>PMID:2162822</ref><ref>PMID:1958666</ref><ref>PMID:1902289</ref><ref>PMID:1346975</ref><ref>PMID:1615485</ref><ref>PMID:8257988</ref><ref>PMID:8076946</ref><ref>PMID:8199596</ref><ref>PMID:7981722</ref><ref>PMID:8680410</ref><ref>PMID:9222764</ref><ref>PMID:9590153</ref><ref>PMID:9452115</ref><ref>PMID:9600455</ref><ref>PMID:10698280</ref><ref>PMID:10094553</ref><ref>PMID:11122099</ref><ref>PMID:12588353</ref><ref>PMID:12604421</ref> Note=Mutations in position 43 (Oxford-3, San Dimas) and 46 (Cambridge) prevents cleavage of the propeptide, mutation in position 93 (Alabama) probably fails to bind to cell membranes, mutation in position 191 (Chapel-Hill) or in position 226 (Nagoya OR Hilo) prevent cleavage of the activation peptide. Defects in F9 are the cause of thrombophilia due to factor IX defect (THPH8) [MIM:[http://omim.org/entry/300807 300807]]. A hemostatic disorder characterized by a tendency to thrombosis.<ref>PMID:19846852</ref>
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==Function==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[http://www.uniprot.org/uniprot/FA9_HUMAN FA9_HUMAN]] Factor IX is a vitamin K-dependent plasma protein that participates in the intrinsic pathway of blood coagulation by converting factor X to its active form in the presence of Ca(2+) ions, phospholipids, and factor VIIIa.
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</div>
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==About this Structure==
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[[1mgx]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MGX OCA].
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==See Also==
==See Also==
*[[Factor IX|Factor IX]]
*[[Factor IX|Factor IX]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:008663165</ref><references group="xtra"/><references/>
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__TOC__
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</StructureSection>
[[Category: Coagulation factor IXa]]
[[Category: Coagulation factor IXa]]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Baleja, J D.]]
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[[Category: Baleja, J D]]
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[[Category: Freedman, S J.]]
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[[Category: Freedman, S J]]
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[[Category: Furie, B.]]
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[[Category: Furie, B]]
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[[Category: Furie, B C.]]
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[[Category: Furie, B C]]
[[Category: Coagulation factor]]
[[Category: Coagulation factor]]
[[Category: Plasma]]
[[Category: Plasma]]

Revision as of 12:07, 18 December 2014

COAGULATION FACTOR, MG(II), NMR, 7 STRUCTURES (BACKBONE ATOMS ONLY)

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