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The composition of crystalline complexes of neurophysin-M with [8-arginine]-vasopressin and oxytocin.


ABSTRACT: Neurophysin-M, a methionine-containing protein that is the major constituent of neurophysin, has been crystallized as complexes with [8-arginine]-vasopressin. Three moles of vasopressin alone or 2 moles of vasopressin together with 1 mole of oxytocin are bound/mole of protein. An amorphous complex of the protein with oxytocin alone contains 2 moles of the hormone/mole of protein. Deamino-[8-arginine]-vasopressin, a highly active basic analogue of vasopressin, is not bound by neurophysin. The primary amino group of both vasopressin and oxytocin is necessary for binding with neurophysin.

SUBMITTER: Hollenberg MD 

PROVIDER: S-EPMC1198408 | biostudies-other | 1967 Dec

REPOSITORIES: biostudies-other

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