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Inositol 1,4,5-triphosphate phosphatase activity in membranes isolated from amphibian skeletal muscle [corrected].

作者信息

Sánchez X, Carrasco M A, Vergara J, Hidalgo C

机构信息

Centro de Estudios Cientificos de Santiago, Casilla, Chile.

出版信息

FEBS Lett. 1991 Feb 11;279(1):58-60. doi: 10.1016/0014-5793(91)80250-7.

DOI:10.1016/0014-5793(91)80250-7
PMID:1995344
Abstract

The hydrolysis of [3H]inositol 1,4,5-trisphosphate by a soluble fraction and by isolated transverse tubule and sarcoplasmic reticulum membranes from frog skeletal muscle was studied. Transverse tubule membranes displayed rates of hydrolysis several-fold higher than those of sacroplasmic reticulum and soluble fraction; Km and Vmax were 25.2 microM and 44.1 nmol/mg/min, respectively. Transverse tubule membranes sequentially hydrolyzed inositol trisphosphate to inositol bisphosphate, inositol 1-phosphate and inositol, indicating that these membranes have inositol bis- and monophosphatases in addition to inositol trisphosphatase.

摘要

相似文献

1
Inositol 1,4,5-triphosphate phosphatase activity in membranes isolated from amphibian skeletal muscle [corrected].
FEBS Lett. 1991 Feb 11;279(1):58-60. doi: 10.1016/0014-5793(91)80250-7.
2
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Failure of inositol 1,4,5-trisphosphate to elicit or potentiate Ca2+ release from isolated skeletal muscle sarcoplasmic reticulum.肌醇1,4,5 - 三磷酸不能引发或增强从分离的骨骼肌肌浆网释放钙离子。
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7
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Nature. 1985;316(6026):347-9. doi: 10.1038/316347a0.

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