Formation and sequence analysis of secretoneurin, a neuropeptide derived from secretogranin II, in mammalian, bird, reptile, amphibian and fish brains.
Secretoneurin is a recently-characterized neuropeptide derived from secretogranin II, a protein belonging to the class of chromogranins. We investigated the phylogeny of this peptide by immunoblotting and gel-filtration high performance liquid chromatography followed by radioimmunoassay of brain extracts of various species including chicken, lizard, frog and fish. In addition the amino acid sequence of secretoneurin from pig, hamster, rabbit, guinea-pig and chicken was established by reverse transcriptase polymerase chain reaction. Secretoneurin is strongly conserved during evolution, it is not only expressed in various mammalian species but found also in the brain of birds, reptiles, amphibians and fish. In all these species a significant or near complete processing of secretogranin II to secretoneurin was observed. These data provide significant evidence for the neuropeptide nature of the novel functional peptide.
Leitner
B
B
Department of Pharmacology, University of Innsbruck, Austria.
Schneitler
C
C
Klocker
H
H
Volknandt
W
W
Zimmermann
H
H
Winkler
H
H
Fischer-Colbrie
R
R
D000595:Amino Acid Sequence; D000818:Animals; D001921:Brain / Q000378:metabolism*; D002645:Chickens; D002864:Chromogranins; D017124:Conserved Sequence; D006224:Cricetinae; D006168:Guinea Pigs; D006801:Humans; D008116:Lizards; D051379:Mice; D008969:Molecular Sequence Data; D009479:Neuropeptides / Q000096:biosynthesis* / Q000235:genetics*; D010802:Phylogeny; D016133:Polymerase Chain Reaction; D011506:Proteins / Q000378:metabolism*; D011817:Rabbits; D011898:Ranidae; D053381:Secretogranin II; D017386:Sequence Homology, Amino Acid; D013552:Swine; D014101:Torpedo; D014337:Trout
D002864:Chromogranins; D009479:Neuropeptides; D011506:Proteins; D053381:Secretogranin II; C081159:secretoneurin