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Ovarian Kaleidoscope Database (OKdb)

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Hsueh lab

HPMR

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176557

SHC TRANSFORMING PROTEIN; SHC1 OKDB#: 1839
 Symbols: SHC TRANSFORMING PROTEIN; SHC1 Species: human
 Synonyms: SHCA| p46, INCLUDED| p52, INCLUDED| p66, INCLUDED|  Locus: 1q21 in Homo sapiens


For retrieval of Nucleotide and Amino Acid sequences please go to: OMIM Entrez Gene
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General Comment
General function
Comment
Cellular localization Cytoplasmic
Comment
Ovarian function Follicle development
Comment
Expression regulated by LH
Comment Carvalho CR, et al reported a novel signal transduction pathway for luteinizing hormone and its interaction with insulin and the activation of Janus kinase/signal transducer and activator of transcription and phosphoinositol 3-kinase/Akt pathways. The actions of LH are mediated through a single class of cell surface LH/human chorionic gonadotropin receptor, which is a member of the G protein-coupled receptor family. In the present study the authors showed that LH induced rapid tyrosine phosphorylation and activation of the Janus kinase 2 (JAK2) in rat ovary. Upon JAK2 activation, tyrosine phosphorylation of signal transducer and activator of transcription-1 (STAT-1), STAT-5b, insulin receptor substrate-1 (IRS-1), and Src homology and collagen homology (Shc) were detected. In addition, LH induced IRS-1/phosphoinositol 3-kinase and Shc /growth factor receptor-binding protein 2 (Grb2) associations and downstream AKT (protein kinase B, homologous to v-AKT) serine phosphorylation and ERK tyrosine phosphorylation, respectively. The simultaneous infusion of insulin and LH induced higher phosphorylation levels of JAK2, STAT5b, IRS-1, and AKT compared with each hormone alone in the whole ovary of normal rats. By immunohistochemistry the authors demonstrated that these late events take place in follicular cells and both external and internal theca. These results indicate a new signal transduction pathway for LH and show that there is positive cross-talk between the insulin and LH signaling pathways at the level of phosphoinositol 3-kinase/AKT pathway in this tissue.
Ovarian localization Theca
Comment
Follicle stages
Comment
Phenotypes
Mutations 0 mutations
SNPs
D E M O
Links
OMIM (Online Mendelian Inheritance in Man: an excellent source of general gene description and genetic information.)
OMIM \ Animal Model
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created: June 20, 2003, 11:18 a.m. by: hsueh   email:
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last update: Nov. 7, 2003, 2:29 p.m. by: system    email:



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