Identification of calpain II in porcine sperm.

Identification of calpain II in porcine sperm.
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猪精子中钙蛋白酶 II 的鉴定。

DOI:
--
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发表时间:
1986
影响因子:
3.6
通讯作者:
Judith E. Schollmeyer
Judith E. Schollmeyer
中科院分区:
生物学2区
文献类型:
--
作者:
Judith E. Schollmeyer

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蛋白水解酶在精子膜相关现象中可能发挥的作用一直是广泛研究的主题。在本研究中,我们研究了钙激活的中性蛋白酶,钙蛋白酶II,可能与精子膜的可能性。使用间接免疫荧光与初级抗体,这是针对钙蛋白酶II的80 kDa亚基的多克隆和单克隆抗体,我们已经建立了这种抗原在猪精子的存在。染色的顶体帽和基体(中心粒)区域的顶段anticalpain II(80 kDa亚基)被一致地看到。还观察到精子尾部的可变染色。这些观察结果,结合我们的顶体膜中80 kDa蛋白的阳性鉴定(通过免疫印迹),证明了这种蛋白酶与精子膜的关联。钙蛋白酶II接近顶体表明蛋白酶在Ca2+介导的顶体反应中的潜在作用。
The role that proteolytic enzymes may play in membrane-associated phenomena of sperm has been the subject of extensive investigation. In the present study, we have examined the possibility that a Ca2+-activated, neutral protease, calpain II, may be associated with sperm membranes. Using indirect immunofluorescence with primary antibodies, which are polyclonal and monoclonal antibodies directed against the 80 kDa subunit of calpain II, we have established the presence of this antigen in porcine sperm. Staining by anticalpain II (80 kDa subunit) of the apical segment of the acrosomal cap and basal body (centriolar) region was seen consistently. Variable staining of the sperm tail was also observed. These observations, combined with our positive identification of a 80 kDa protein in acrosomal membranes (via immunoblot), document the association of this protease with sperm membranes. The proximity of calpain II to the acrosome suggests a potential role for the protease in the Ca2+-mediation of the acrosome reaction.
DOI: 10.1021/bi00260a012
发表时间: 1982
期刊: Biochemistry
影响因子: 2.9
作者:
Zimmerman,UJ;Schlaepfer,WW
通讯作者: Schlaepfer,WW
DOI: --
发表时间: 1982
期刊: The Journal of biological chemistry
影响因子: --
作者:
Collier,NC;Wang,K
通讯作者: Wang,K
DOI: 10.1016/s0006-291x(81)80247-1
发表时间: 1981
影响因子: 3.1
作者:
Truglia,JA;Stracher,A
通讯作者: Stracher,A