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HPMR

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coagulation factor III (thromboplastin, tissue factor) OKDB#: 2596
 Symbols: F3 Species: human
 Synonyms: TF, TFA, CD142,TISSUE FACTOR, TF|TISSUE THROMBOPLASTIN  Locus: 1p22-p21 in Homo sapiens
HPMR


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General Comment NCBI Summary: This gene encodes coagulation factor III which is a cell surface glycoprotein. This factor enables cells to initiate the blood coagulation cascades, and it functions as the high-affinity receptor for the coagulation factor VII. The resulting complex provides a catalytic event that is responsible for initiation of the coagulation protease cascades by specific limited proteolysis. Unlike the other cofactors of these protease cascades, which circulate as nonfunctional precursors, this factor is a potent initiator that is fully functional when expressed on cell surfaces. There are 3 distinct domains of this factor: extracellular, transmembrane, and cytoplasmic. This protein is the only one in the coagulation pathway for which a congenital deficiency has not been described. Alternate splicing results in multiple transcript variants.[provided by RefSeq, May 2010]
General function Receptor
Comment Elevated Circulating Levels of Tissue Factor in Polycystic Ovary Syndrome. Gonzlez F et al. Women with polycystic ovary syndrome (PCOS) have coagulation disturbances and inflammation, which increases the risk of atherothrombosis. We evaluated the status of circulating tissue factor (TF), the receptor for coagulation factor VII involved in atherothrombosis, in women with PCOS and weight-matched controls. Two-way analysis of variance models were fit to evaluate the effect of PCOS status and weight class on TF and other parameters. The TF levels were significantly higher in lean women with PCOS compared to lean controls. Plasminogen activator inhibitor 1 (PAI-1) levels were significantly higher in obese participants compared to lean participants after controlling for PCOS status. The TF levels directly correlated with percentage of truncal fat and plasma levels of PAI-1, testosterone, androstendione, and dehydroepiandrosterone-sulfate; and inversely correlated with insulin sensitivity index-OGTT(IS(OGTT)). Circulating TF is elevated in PCOS independent of obesity, but both PCOS and obesity contribute to a prothrombotic state. In PCOS, abdominal adiposity and hyperandrogenism may exacerbate the risk of atherothrombosis.
Cellular localization Plasma membrane
Comment
Ovarian function
Comment Found in an ovarian cDNA libray.
Expression regulated by LH
Comment
Ovarian localization Granulosa
Comment Changes in mouse granulosa cell gene expression during early luteinization. McRae RS et al. Changes in gene expression during granulosa cell luteinization have been measured using serial analysis of gene expression (SAGE). Immature normal mice were treated with pregnant mare serum gonadotropin (PMSG) or PMSG followed, 48 h later, by human chorionic gonadotropin (hCG). Granulosa cells were collected from preovulatory follicles after PMSG injection or PMSG/hCG injection and SAGE libraries generated from the isolated mRNA. The combined libraries contained 105,224 tags representing 40,248 unique transcripts. Overall, 715 transcripts showed a significant difference in abundance between the two libraries of which 216 were significantly down-regulated by hCG and 499 were significantly up-regulated. Among transcripts differentially regulated, there were clear and expected changes in genes involved in steroidogenesis as well as clusters of genes involved in modeling of the extracellular matrix, regulation of the cytoskeleton and intra and intercellular signaling. The SAGE libraries described here provide a base for functional investigation of the regulation of granulosa cell luteinization.
Follicle stages
Comment
Phenotypes
Mutations 0 mutations
Genomic Region show genomic region
Phenotypes and GWAS show phenotypes and GWAS
Links
OMIM (Online Mendelian Inheritance in Man: an excellent source of general gene description and genetic information.)
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created: Sept. 10, 2004, 9:02 a.m. by: hsueh   email:
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last update: Feb. 22, 2012, 7:54 a.m. by: hsueh    email:



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