Cholinesterase solubilizing factor from Cytophaga sp. is a phosphatidylinositol-specific phospholipase C.
Cholinesterase solubilizing factor from Cytophaga sp. is a phosphatidylinositol-specific phospholipase C.
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来自 Cytophaga sp. 的胆碱酯酶溶解因子。
DOI:
10.1016/0304-4165(91)90037-h
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发表时间:
1991
期刊:
影响因子:
--
通讯作者:
U. Brodbeck
中科院分区:
文献类型:
--
作者:
K. Jäger;S. Stieger;U. Brodbeck
In the culture supernatant ofCytophagasp. we detected an enzyme that converted glycosylphosphatidyl-inositol-anchoredv acetylcholinesterase to the hydrophilic form. This enzyme had a cleavage specificity of a phospholipase C. It hydrolyzed phosphatidylinositol but did not act on phosphatidylcholine. On gel filtration the enzyme migrated with an apparent molecular mass of about 17 kDa. It displayed maximal activity between pH 6–6.5 and did not require cofactors for the expression of catalytic activity. Mercurials and zinc ions inhibited the enzyme and its activity also decreased with increasing ionic strength in the assay. With acetylcholinesterase as substrate optimal activity was obtained in pure micelles of Triton X-100, whereas in mixed micelles containing Triton X-100 and phosphatidylcholine the activity was reduced. The enzyme fromCytophagasp. showed little activity towards acetylcholinesterase embedded in intact membranes where more than 1000-times higher concentrations of phosphatidylinositol-specific phospholipase C was necessary to solubilize acetylchesterase as compared to acetylcholinesterase in detergent micelles.
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影响因子:
2.9
作者:
Haas,R;Brandt,PT;Knight,J;Rosenberry,TL
通讯作者:
Rosenberry,TL
影响因子:
--
作者:
Rosenberry,TL;Chen,JF;Lee,MM;Moulton,TA;Onigman,P
通讯作者:
Onigman,P
DOI:
--
发表时间:
1985
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Ferguson,MA;Low,MG;Cross,GA
通讯作者:
Cross,GA
DOI:
--
发表时间:
1987
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
OrlandiJr,PA;Turco,SJ
通讯作者:
Turco,SJ
影响因子:
2.9
作者:
Roberts,WL;Rosenberry,TL
通讯作者:
Rosenberry,TL