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Evolutionary specificity of hydrins, new hydroosmotic neuropeptides: occurrence of hydrin 2 (vasotocinyl‐Gly) in the toad Bufo marinus but not in the viper Vipera aspis
Author(s) -
Michel G.,
Rouillé Y.,
Chauvet M.T.,
Chauvet J.,
Acher R.
Publication year - 1990
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(90)80783-f
Subject(s) - toad , bufo marinus , viper , amphibian , bufo , biology , zoology , salientia , endocrinology , ecology , venom , xenopus , gene , genetics
Hydrin 2 (vasotocinyl‐Gly), a hydroosmotic peptide resulting from differential processing of provasotocin and recently identified in frog neurohypophysis, has been looked for in the pituitary gland of an exotic toad ( Bufo marinus ) and of a reptile ( Vipera aspis ). Hydrin 2 has been found in the amphibian but not in the reptile. This result confirms the evolutionary specificity of hydrin 2 that has been identified only in frogs and toads but not in birds and reptiles. Occurrence of hydrin 2 is explained by its regulatory function on the water permeability of the skin of anurans.