Proteolytic activation of membrane-bound guanylate cyclase.
Proteolytic activation of membrane-bound guanylate cyclase.
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膜结合鸟苷酸环化酶的蛋白水解激活。
DOI:
10.1016/s0006-2952(01)00533-0
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发表时间:
2001
影响因子:
5.8
通讯作者:
Chang,CH
中科院分区:
文献类型:
--
作者:
Chen,ZJ;Song,DL;Miao,Z;Chang,CH
Membrane-bound guanylate cyclase-A (GC-A), the receptor for atrial natriuretic factor (ANF), has been shown to be regulated by its kinase-like domain. To resolve the nature of this regulation, we measured the effects of various proteases on the activity of guanylate cyclase in rat lung membranes, and on the activity of the bacterial-expressed catalytic domain (GC-c) and on a recombinant peptide composed of both the kinase-like and catalytic domain (GC-kc) of guanylate cyclase. Pronase increased rat guanylate cyclase activity in a biphasic manner with a maximal effect at about 10–20 μg per assay tube. Thermolysin had effects similar to those of pronase on the activity of guanylate cyclase in rat lung membranes. In the case of bacterial-expressed proteins, pronase increased the activity of GC-kc, but not GC-c. These results indicate that GC-A contains an autoinhibitory site on its kinase-like domain, and that removal of the autoinhibitory site by limited proteolysis leads to enzyme activation. GC-A was poorly activated by ANF and ATP after the rat lung membrane was pretreated with pronase, suggesting that ANF/ATP and pronase activate guanylate cyclase through the same mechanism. It is suggested that the binding of ANF and ATP to GC-A may induce a conformational change of the receptor that releases the inhibitory constraint on enzyme activity leading to enzyme activation.
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DOI:
--
发表时间:
1982
期刊:
Journal of cyclic nucleotide research
影响因子:
--
作者:
Waldman,SA;Lewicki,JA;Brandwein,HJ;Murad,F
通讯作者:
Murad,F
DOI:
10.1101/sqb.1988.053.01.115
发表时间:
1988
期刊:
Cold Spring Harbor symposia on quantitative biology
影响因子:
--
作者:
Murad,F;Leitman,D;Waldman,S;Chang,CH;Hirata,M;Kohse,K
通讯作者:
Kohse,K
影响因子:
4.8
作者:
M. Lacombe;J. Hanoune
通讯作者:
J. Hanoune
影响因子:
4.8
作者:
A. Edelman;Koji Takio;Donald K. Blumenthal;R. Hansen;Kenneth A. Walsh;K. Titani;E. Krebs
通讯作者:
E. Krebs
DOI:
10.1016/s0006-291x(05)81098-8
发表时间:
1991
影响因子:
3.1
作者:
Thorpe,DS;Niu,S;Morkin,E
通讯作者:
Morkin,E