Structure and macromolecular composition of the zebrafish egg chorion

被引：85

作者：

Bonsignorio, D ^{[1
]}

Perego, L ^{[1
]}

DelGiacco, L ^{[1
]}

Cotelli, F ^{[1
]}

机构：

[1] UNIV MILAN,DIPARTIMENTO BIOL,I-20133 MILAN,ITALY

来源：

ZYGOTE | 1996年 / 4卷 / 02期

关键词：

chorion; egg envelopes; lectins; N-linked glycoproteins; zebrafish;

D O I：

10.1017/S0967199400002975

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

The chorion is the acellular envelope surrounding mature eggs of teleostean fish. The macromolecular composition of the zebrafish (Danio rerio) egg chorion, organised as a three-layered structure, has been analysed. SDS-PAGE analysis, under reducing conditions, of isolated and purified chorions revealed a reproducible pattern of four major polypeptides (116, 97, 50 and 43 kDa) and several minor bands. Lectin binding assays showed that both the 116 kDa and 50 kDa proteins were recognised by concanavalin agglutinin (Con A), Galanthus nivalis agglutinin (GNA), Sambucus nigra bark agglutinin (SNA) and Ricinus communis agglutinin (RCA 120), suggesting that these polypeptides are N-linked glycoproteins. By contrast, neither the 97 kDa nor the 43 kDa polypeptides were stained by these lectins, indicating that these polypeptides are not glycosylated. Amino acid analysis also showed significant differences in the average content of some amino acids, for example serine and proline, when compared with previous reports.

引用

页码：101 / 108

页数：8

共 35 条

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