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Protamines in plant sperm.

W F Reynolds·S L Wolfe
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Abstract

Sperm protamines have been isolated from representatives of three major plant groups: algae (Chara corallina ), bryophytes ( Marchantia polymorpha), and ferns ( Marsilea vestitia ). We previously reported the complete displacement of histones by protamines in Marchantia (Reynolds W F & Wolfe, S L, Exp cell res 116 (1978) 269 [8] ). Marchantia protamines appear as four components on acid-urea gels, whereas Chara and Marsilea protamines comigrate as a single band with a mobility comparable to salmon protamine. The amino acid compositions of the plant protamines show these to be arginine-rich, highly basic (35-42%) proteins which display overall similarity in amino acid composition (84-91%). The molecular weights of Chara and Marsilea protamines are approx. 4700-5300 D.

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Amino AcidsElectrophoresis, Agar GelMolecular WeightPlantsProtaminesSeedsJournal Article

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W F Reynolds, S L Wolfe. 1984. Protamines in plant sperm.. https://doi.org/10.1016/0014-4827(84)90645-1

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