3p72: Difference between revisions
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==structure of platelet Glycoprotein 1b alpha with a bound peptide inhibitor== | |||
<StructureSection load='3p72' size='340' side='right' caption='[[3p72]], [[Resolution|resolution]] 1.90Å' scene=''> | |||
== Structural highlights == | |||
==Disease== | <table><tr><td colspan='2'>[[3p72]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3P72 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3P72 FirstGlance]. <br> | ||
[[http://www.uniprot.org/uniprot/GP1BA_HUMAN GP1BA_HUMAN]] Genetic variations in GP1BA may be a cause of susceptibility to non-arteritic anterior ischemic optic neuropathy (NAION) [MIM:[http://omim.org/entry/258660 258660]]. NAION is an ocular disease due to ischemic injury to the optic nerve. It usually affects the optic disk and leads to visual loss and optic disk swelling of a pallid nature. Visual loss is usually sudden, or over a few days at most and is usually permanent, with some recovery possibly occurring within the first weeks or months. Patients with small disks having smaller or non-existent cups have an anatomical predisposition for non-arteritic anterior ischemic optic neuropathy. As an ischemic episode evolves, the swelling compromises circulation, with a spiral of ischemia resulting in further neuronal damage.<ref>PMID:14711733</ref> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene></td></tr> | ||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1u0n|1u0n]], [[1sq0|1sq0]], [[1gwb|1gwb]]</td></tr> | |||
==Function== | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">GP1BA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</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=3p72 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3p72 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3p72 RCSB], [http://www.ebi.ac.uk/pdbsum/3p72 PDBsum]</span></td></tr> | |||
</table> | |||
== Disease == | |||
[[http://www.uniprot.org/uniprot/GP1BA_HUMAN GP1BA_HUMAN]] Genetic variations in GP1BA may be a cause of susceptibility to non-arteritic anterior ischemic optic neuropathy (NAION) [MIM:[http://omim.org/entry/258660 258660]]. NAION is an ocular disease due to ischemic injury to the optic nerve. It usually affects the optic disk and leads to visual loss and optic disk swelling of a pallid nature. Visual loss is usually sudden, or over a few days at most and is usually permanent, with some recovery possibly occurring within the first weeks or months. Patients with small disks having smaller or non-existent cups have an anatomical predisposition for non-arteritic anterior ischemic optic neuropathy. As an ischemic episode evolves, the swelling compromises circulation, with a spiral of ischemia resulting in further neuronal damage.<ref>PMID:14711733</ref> Defects in GP1BA are a cause of Bernard-Soulier syndrome (BSS) [MIM:[http://omim.org/entry/231200 231200]]; also known as giant platelet disease (GPD). BSS patients have unusually large platelets and have a clinical bleeding tendency.<ref>PMID:1730088</ref> <ref>PMID:7690774</ref> <ref>PMID:7819107</ref> <ref>PMID:7873390</ref> <ref>PMID:9639514</ref> <ref>PMID:10089893</ref> Defects in GP1BA are the cause of benign mediterranean macrothrombocytopenia (BMM) [MIM:[http://omim.org/entry/153670 153670]]; also known as autosomal dominant benign Bernard-Soulier syndrome. BMM is characterized by mild or no clinical symptoms, normal platelet function, and normal megakaryocyte count.<ref>PMID:11222377</ref> Defects in GP1BA are the cause of pseudo-von Willebrand disease (VWDP) [MIM:[http://omim.org/entry/177820 177820]]. A bleeding disorder is caused by an increased affinity of GP-Ib for soluble vWF resulting in impaired hemostatic function due to the removal of vWF from the circulation.<ref>PMID:14521605</ref> <ref>PMID:2052556</ref> <ref>PMID:8486780</ref> <ref>PMID:8384898</ref> | |||
== Function == | |||
[[http://www.uniprot.org/uniprot/GP1BA_HUMAN GP1BA_HUMAN]] GP-Ib, a surface membrane protein of platelets, participates in the formation of platelet plugs by binding to the A1 domain of vWF, which is already bound to the subendothelium. | [[http://www.uniprot.org/uniprot/GP1BA_HUMAN GP1BA_HUMAN]] GP-Ib, a surface membrane protein of platelets, participates in the formation of platelet plugs by binding to the A1 domain of vWF, which is already bound to the subendothelium. | ||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | |||
<references | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Andrews, R K | [[Category: Andrews, R K]] | ||
[[Category: Emsley, J | [[Category: Emsley, J]] | ||
[[Category: McEwan, P A | [[Category: McEwan, P A]] | ||
[[Category: Blood clotting-inhibitor complex]] | [[Category: Blood clotting-inhibitor complex]] | ||
[[Category: Coagulation]] | [[Category: Coagulation]] | ||
[[Category: Inhibitor]] | [[Category: Inhibitor]] | ||
[[Category: Leucine-rich repeat]] | [[Category: Leucine-rich repeat]] | ||