CHEMICAL-IDENTIFICATION OF THE MAMMALIAN OXYTOCIN IN A HOLOCEPHALIAN FISH, THE RATFISH (HYDROLAGUS-COLLIEI)

被引:13
作者
MICHEL, G
CHAUVET, J
CHAUVET, MT
CLARKE, C
BERN, H
ACHER, R
机构
[1] PACIFIC BIOL STN,NANAIMO V9R 5K6,BC,CANADA
[2] UNIV CALIF BERKELEY,DEPT INTEGRAT BIOL,BERKELEY,CA 94720
关键词
D O I
10.1006/gcen.1993.1162
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
The neurohypophysial hormones of the ratfish (Hydrolagus colliei), a species belonging to the subclass Holocephali of cartilaginous fishes, have been investigated. An oxytocin-like hormone has been isolated from acetone- desiccated pituitary glands by using successively molecular sieving and high- pressure liquid chromatography. The peptide has been identified as oxytocin by coelution with synthetic oxytocin in HPLC, amino acid sequencing, mass spectrometry, and C-terminal sequencing through carboxypeptidase Y. Vasotocin may be present in a very small amount. Cartilaginous fishes appear to display a great diversity in their oxytocin-like hormones since five different peptides have been identified in rays and sharks that belong to the second subclass Selachii. © 1993 by Academic Press, Inc.
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收藏
页码:260 / 268
页数:9
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