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- Title
Identification, purification and characterization of a novel phosphatidylinositol-specific phospholipase C, a third member of the beta subfamily.
- Authors
Carozzi, A J; Kriz, R W; Webster, C; Parker, P J
- Abstract
The partial sequence of a novel PtdIns-specific phospholipase C of the beta subfamily (PtdIns-PLC beta 3) is described. Based upon the predicted protein sequence, monospecific antibodies have been raised and used to identify a suitable source for purification of the protein. Fractionation of HeLa S3 cells revealed that immunoreactive PtdIns-PLC beta 3 is membrane associated; purification (approximately 1000-fold) from this fraction yielded a single immunoreactive protein of 158 kDa, with a specific activity of 136 mumol.min-1.mg-1, with PtdIns 4,5-bisphosphate as substrate. Substrate specificity and Ca2+ dependence of this purified PtdIns-PLC are characteristic of the PtdIns-PLC beta subfamily.
- Publication
European journal of biochemistry, 1992, Vol 210, Issue 2, p521
- ISSN
0014-2956
- Publication type
Journal Article
- DOI
10.1111/j.1432-1033.1992.tb17450.x