The sperm nuclear basic proteins of the sword fern (Polystichum munitum).
Biochem Cell Biol
; 102(3): 285-290, 2024 Jun 01.
Article
em En
| MEDLINE
| ID: mdl-38346284
ABSTRACT
Sperm nuclear basic proteins (SNBPs) were isolated from extracted antheridia-rich male gametophytes raised from spores of the swordfern, Polystichum munitum. Electrophoretic (acetic acid-urea PAGE and SDS-PAGE) and chromatographic (rp-HPLC) characterization of the nuclear proteins exhibited the characteristics of the histone (H-type). In both types of gel electrophoresis, histones H1, H2A, and H2B showed an altered electrophoretic mobility corresponding to that which is routinely observed for the histones in other plants. Histones present during spermatogenesis of the fern P. munitum were compared with the few current SNBPs known to be present in higher and lower evolutionary plant clades. A transition from an early protamine (P-type) SNBPs in charophytes and bryophytes to the (H-type) SNBP observed here is reminiscent of similar reversions observed in the animal kingdom.
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Texto completo:
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Bases de dados:
MEDLINE
Assunto principal:
Proteínas de Plantas
/
Gleiquênias
Idioma:
En
Revista:
Biochem Cell Biol
Assunto da revista:
BIOQUIMICA
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Canadá