Conserved Furin Cleavage Site Not Essential for Secretion and Integration of ZP3 into the Extracellular Egg Coat of Transgenic Mice
Conserved Furin Cleavage Site Not Essential for Secretion and Integration of ZP3 into the Extracellular Egg Coat of Transgenic Mice
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保守的弗林蛋白酶切割位点对于 ZP3 分泌和整合到转基因小鼠细胞外蛋壳中不是必需的
DOI:
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发表时间:
2002
影响因子:
5.3
通讯作者:
J. Dean
中科院分区:
文献类型:
--
作者:
Ming Zhao;L. Gold;A. Ginsberg;L. Liang;J. Dean
ABSTRACT The extracellular zona pellucida surrounding mammalian eggs is formed by interactions of the ZP1, ZP2, and ZP3 glycoproteins. Female mice lacking ZP2 or ZP3 do not form a stable zona matrix and are sterile. The three zona proteins are synthesized in growing oocytes and secreted prior to incorporation into the zona pellucida. A well-conserved furin site upstream of a transmembrane domain near the carboxyl terminus of each has been implicated in the release of the zona ectodomains from oocytes. However, mutation of the furin site (RNRR → ANAA) does not affect the intracellular trafficking or secretion of an enhanced green fluorescent protein (EGFP)-ZP3 fusion protein in heterologous somatic cells. After transient expression in growing oocytes, normal EGFP-ZP3 and mutant EGFP-ZP3 associate with the inner aspect of the zona pellucida, which is distinct from the plasma membrane. These in vitro results are confirmed in transgenic mice expressing EGFP-ZP3 with or without the mutant furin site. In each case, EGFP-ZP3 is incorporated throughout the width of the zona pellucida and the transgenic mice are fertile. These results indicate that the zona matrix accrues from the inside out and, unexpectedly, suggest that cleavage at the furin site is not required for formation of the extracellular zona pellucida surrounding mouse eggs.
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影响因子:
4.6
作者:
T. Rankin;M. O'Brien;Eric Lee;K. Wigglesworth;J. Eppig;Jurrien Dean
通讯作者:
T. Rankin;M. O'Brien;Eric Lee;K. Wigglesworth;J. Eppig;Jurrien Dean
影响因子:
14.9
作者:
Donald Seto
通讯作者:
Donald Seto
影响因子:
19
作者:
Molloy, SS;Anderson, ED;Thomas, G
通讯作者:
Thomas, G
DOI:
--
发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Chazenbalk,GD;Rapoport,B
通讯作者:
Rapoport,B
DOI:
--
发表时间:
1993
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Low,MG;Huang,KS
通讯作者:
Huang,KS