Ovine caveolin-1: cDNA cloning, E. coli expression, and association with endothelial nitric oxide synthase

Molecular and Cellular Endocrinology
D ChenRonald R Magness

Abstract

Caveolin-1 (Cav-1), the principal coat protein of caveolae, plays an obligatory role in regulating the activity of endothelial nitric oxide (NO) synthase (eNOS). We propose that Cav-1 may be critical to eNOS-NO mediated uterine vasodilatation during pregnancy and estrogen replacement therapy. To test this hypothesis in the sheep model, we isolated the full-length cDNA of ovine Cav-1 (oCav-1) from a Lambda ZAP cDNA library of ovine placental artery endothelial cells. Thirty-two positive oCav-1 clones were recognized by a partial oCav-1 cDNA from this library, of which eight were sequenced. Restriction digestion of these clones revealed that the cDNAs of oCav-1 ranged from approximately 2.1 to 2.7 kb. Northern analysis of Cav-1 mRNAs in ovine uterine artery endothelial cells (UAEC) showed two transcripts of approximately 2.1 and 2.7 kb, respectively. Immunoreactive Cav-1 protein, but not caveolin-2 or caveolin-3, was detected in UAEC. Sequence analysis revealed that in addition to a 537-bp open reading frame encoding a 178 amino acid oCav-1 protein, full-length oCav-1 cDNAs apparently possess a approximately 1.6-2.1 kb 3'-untranslated region. Database searches with oCav-1 cDNA revealed that the coding region of mammalian Cav-1 ge...Continue Reading

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Citations

Dec 7, 2006·The American Journal of Pathology·Ping-Ke FangPamela C Yelick
Aug 20, 2010·Reproductive Sciences·Cecilia Y CheungRobert A Brace

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