Isolation and structure of the Drosophila corazonin gene.
A recombinant DNA clone containing the corazonin gene was isolated from a genomic library of Drosophila melanogaster. Its nucleotide sequence predicts a preprocorazonin consisting of an 19 amino acid putative signal peptide, the 11 amino acid corazonin sequence, a Gly used for amidation, a Lys-Arg proteolytic processing site, and a 39 amino acid corazonin-precursor-related peptide (CPRP). CPRP has an internal Arg-Arg sequence and thus could possibly be further processed into a tripeptide and a 34-mer. Neither CPRP or its possible products are structurally related to any known neuropeptide, and their physiological function is unknown. The structure of the predicted preprocorazonin is remarkably similar to the preprohormone of adipokinetic hormone, which suggests that corazonin and adipokinetic hormone have a common evolutionary origin.
Veenstra
J A
JA
Department of Entomology, University of Arizona, Tucson 85721.
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D029721:Drosophila Proteins; D004331:Drosophila melanogaster / Q000235:genetics*; D015698:Genomic Library; D019476:Insect Proteins; D008969:Molecular Sequence Data; D009479:Neuropeptides / Q000096:biosynthesis / Q000235:genetics*; D009838:Oligodeoxyribonucleotides; D021382:Protein Sorting Signals / Q000096:biosynthesis / Q000235:genetics
C489221:Crz protein, Drosophila; D029721:Drosophila Proteins; D019476:Insect Proteins; D009479:Neuropeptides; D009838:Oligodeoxyribonucleotides; D021382:Protein Sorting Signals; C060602:corazonin protein, insect