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
- 7 May 1990
- journal article
- research article
- Published by Wiley in FEBS Letters
- Vol. 264 (1) , 135-137
- https://doi.org/10.1016/0014-5793(90)80783-f
Abstract
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.Keywords
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