Abstract:
:A RT-PCR approach was used to clone and sequence the full-length growth hormone receptor (GHR) of a teleost fish, the turbot (Scophthalmus maximus). Total liver RNA was amplified by RT-PCR with degenerate primers designed in extracellular and cytoplasmic regions, and a single DNA fragment of 1100 bp was obtained. The entire coding region was obtained by 5' and 3' RACE assays, and comprises an open-reading frame of 633 amino acids. This sequence shows the characteristic motifs of the class I cytokine receptor superfamily, and its amino acid identity with mammalian, avian, reptilian and amphibian GHRs is 32-36%. The 3' RACE also revealed the occurrence of an alternate messenger encoding a membrane-anchored truncated receptor, which could facilitate the production of GH-binding protein in fish species. This report represents the first data on fish GHR sequence, and it provides evidence for the conservation of this receptor throughout vertebrate evolution.
journal_name
Endocrinologyjournal_title
Endocrinologyauthors
Calduch-Giner J,Duval H,Chesnel F,Boeuf G,Pérez-Sánchez J,Boujard Ddoi
10.1210/endo.142.7.8407subject
Has Abstractpub_date
2001-07-01 00:00:00pages
3269-73issue
7eissn
0013-7227issn
1945-7170journal_volume
142pub_type
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