Molecular cloning of DNA complementary to bovine growth hormone mRNA.
We have cloned DNA complementary to mRNA coding for bovine growth hormone (bGH). Double-stranded DNA complementary to bovine pituitary mRNA was inserted into the Pst I site of plasmid pBR322 by the dC x dG tailing technique and amplified in E. coli x 1776. A recombinant plasmid containing bGH cDNA ws identified by hybridization to cloned rat growth hormone cDNA. It contains the entire coding and 3'-untranslated regions and 31 bases in the 5'-untranslated region. Nucleotide sequence analysis determined the sequence of the 26-amino acid signal peptide and confirmed the published amino acid sequence of the secreted hormone at all but 2 residues. Codon usage is nonrandom, with 81.7% of the codons ending in G or C. The nucleotide sequence of bGH mRNA is 83.9% homologous with rat GH mRNA and 76.5% homologous with human GH mRNA, while the respective amino acid sequence homologies are 83.5% and 66.8%.[1]References
- Molecular cloning of DNA complementary to bovine growth hormone mRNA. Miller, W.L., Martial, J.A., Baxter, J.D. J. Biol. Chem. (1980) [Pubmed]
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