Molecular cloning of a teleost growth hormone receptor and its functional interaction with human growth hormone
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AbstractThis paper reports the first full-length cDNA sequence of a growth hormone receptor (GHR) from a teleost fish and its functional expression in cultured eukaryotic cells. The cDNA sequence, from Carassius auratus (goldfish), encodes a protein of 602 amino acids (aa) akin in architecture to the GHRs of other species. Despite the presence of motifs characteristic of GHR, the overall homology between the goldfish GHR and other GHRs is very low (approximate to 40% aa identity). CHO cells transfected with this receptor cDNA can be stimulated to proliferate by human growth hormone hGH). In addition, the transfected cells can transactivate a co-expressed mammalian serine protease inhibitor (Spi) 2.1 promoter upon stimulation by hGH. indicating the successful interaction of the fish receptor with the mammalian ligand to evoke the down-stream post-receptor events. Tissue distribution studies indicated that the receptor is mostly expressed in the liver and hypothalamus of goldfish. A single mRNA transcript of a size of about 4 kb was found in the goldfish liver. (C) 2001 Elsevier Science B.V. All rights reserved.
All Author(s) ListLee LTO, Nong G, Chan YH, Tse DLY, Cheng CHK
Journal nameGene
Volume Number270
Issue Number1-2
Pages121 - 129
LanguagesEnglish-United Kingdom
Keywordscomplementary DNA cloning; functional expression; goldfish; growth hormone receptor
Web of Science Subject CategoriesGenetics & Heredity; GENETICS & HEREDITY

Last updated on 2021-22-09 at 23:50