Identification and cDNA cloning of a novel mammalian C2 domain-containing phosphoinositide 3-kinase, HsC2-PI3K

Biochem Biophys Res Commun. 1997 Apr 17;233(2):537-44. doi: 10.1006/bbrc.1997.6495.

Abstract

Phosphoinositide (PI) 3-kinases have been shown to have critical roles in signal transduction, cell transformation and intracellular protein trafficking. Reverse-transcription polymerase chain reaction methods, using degenerate primers derived from the lipid kinase consensus region, were utilised to identify PI 3-kinases in the normal human breast. Here we report the cDNA cloning of a novel human PI 3-kinase isoform, HsC2-PI3K. This PI 3-kinase is most closely related to the recently described C2 domain-containing family of PI 3-kinases which includes Drosophila PI3K_68D/cpk and murine cpk-m/p170. Sequence analysis suggests that HsC2-PI3K is a second distinct mammalian member of the C2 domain-containing PI 3-kinase family. Northern blot analysis of human tissues indicates that HsC2-PI3K is widely expressed. Fluorescence in situ hybridisation has mapped HsC2-PI3K to chromosome 1q32.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Breast / enzymology
  • Chromosome Mapping
  • Cloning, Molecular
  • DNA, Complementary / chemistry
  • Female
  • Humans
  • Molecular Sequence Data
  • Phosphatidylinositol 3-Kinases
  • Phosphotransferases (Alcohol Group Acceptor) / genetics*
  • Protein Conformation
  • Sequence Alignment
  • Signal Transduction
  • Tissue Distribution

Substances

  • DNA, Complementary
  • Phosphatidylinositol 3-Kinases
  • Phosphotransferases (Alcohol Group Acceptor)

Associated data

  • GENBANK/Y11312