Structure and Evolution of Somatostatin Genes
Author(s) -
C J Su,
J. W. White,
WenHsiung Li,
ChiCheng Luo,
Marsha L. Frazier,
Grady F. Saunders,
Lawrence Chan
Publication year - 1988
Publication title -
molecular endocrinology
Language(s) - English
Resource type - Journals
eISSN - 1944-9917
pISSN - 0888-8809
DOI - 10.1210/mend-2-3-209
Subject(s) - biology , complementary dna , catfish , gene , clone (java method) , microbiology and biotechnology , gene duplication , nucleic acid sequence , amino acid , messenger rna , protein primary structure , genetics , peptide sequence , fish <actinopterygii> , fishery
A bovine pancreatic preprosomatostatin cDNA clone has been isolated and sequenced. Although it encodes a predicted 116 amino acid preprosomatostatin that is very similar in primary structure to those deduced from other mammalian preprosomatostatin cDNAs, there are some differences in amino acid composition. Hybridization of this clone to Northern blots of fetal bovine pancreatic poly(A+) RNA reveals a mRNA of 700 nucleotides. Evolution of the preprosomatostatin genes was studied by statistical analysis of anglerfish, catfish, bovine, rat, and human cDNA sequences. The results suggest that the two somatostatin genes present in both anglerfish and catfish were the result of a gene duplication event in a common ancestor of anglerfish and catfish.
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