|Reference : Molecular cloning and characterization of two forms of trout growth hormone cDNA: expres...|
|Scientific journals : Article|
|Life sciences : Biochemistry, biophysics & molecular biology|
|Molecular cloning and characterization of two forms of trout growth hormone cDNA: expression and secretion of tGH-II by Escherichia coli|
|Rentier-Delrue, Françoise [Université de Liège - ULg > Département des sciences de la vie > Biologie et génétique moléculaire - GIGA-R : Coordination scientifique >]|
|Swennen, D. [> > > >]|
|Mercier, L. [> > > >]|
|Lion, M. [ > > ]|
|Benrubi, O. [> > > >]|
|Martial, Joseph [Université de Liège - ULg > Département des sciences de la vie > GIGA-R : Biologie et génétique moléculaire >]|
|Mary Ann Liebert, Inc.|
|[en] Amino Acid Sequence ; Animals ; Base Sequence ; Cloning, Molecular ; *Dna ; Escherichia coli/metabolism ; Growth Hormone/*genetics/secretion ; Molecular Sequence Data ; Salmon ; Salmonidae/*genetics ; Sequence Homology, Nucleic Acid ; Trout/*genetics|
|[en] We constructed a cDNA library using mRNA isolated from rainbow trout pituitaries. Two types of cDNA clones encoding growth hormone (GH) were isolated and their complete nucleotide sequences determined. Twenty seven nucleotide substitutions in the coding region and 108 in the noncoding region distinguish the cDNAs of trout GH-I and II. Both cDNAs encode polypeptides of 210 amino acids, including a putative signal peptide of 22 amino acids, which differ by 12 residues. In both trout and salmon, GH-I mRNA is predominant, which suggests that the variation in the amount of secreted GH originates from a transcriptional event. Moreover, comparison of rainbow trout and chum salmon GH reveals that, in both cases, the predominant GH-I has mutated less than its GH-II counterpart. Mature tGH-II was expressed in Escherichia coli using the pIN-III-ompA-Hind secretion vector.|
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