Regulation of lipid biosynthesis by phosphatidylinositol-specific phospholipase C through the transcriptional repression of upstream activating sequence inositol containing genes

Sunny D Rupwate; Preeti S Rupwate; Ram Rajasekharan

doi:10.1016/j.febslet.2012.04.022

Regulation of lipid biosynthesis by phosphatidylinositol-specific phospholipase C through the transcriptional repression of upstream activating sequence inositol containing genes

FEBS Lett. 2012 May 21;586(10):1555-60. doi: 10.1016/j.febslet.2012.04.022. Epub 2012 Apr 21.

Authors

Sunny D Rupwate¹, Preeti S Rupwate, Ram Rajasekharan

Affiliation

¹ Department of Biochemistry, Indian Institute of Science, Bangalore, India.

PMID: 22673525
DOI: 10.1016/j.febslet.2012.04.022

Abstract

The regulation of phospholipid biosynthesis in Saccharomyces cerevisiae through cis-acting upstream activating sequence inositol (UAS(ino)) and trans-acting elements, such as the INO2-INO4 complex and OPI1 by inositol supplementation in growth is thoroughly studied. In this study, we provide evidence for the regulation of lipid biosynthesis by phosphatidylinositol-specific phospholipase C (PLC) through UAS(ino) and the trans-acting elements. Gene expression analysis and radiolabelling experiments demonstrated that the overexpression of rice PLC in yeast cells altered phospholipid biosynthesis at the levels of transcriptional and enzyme activity. This is the first report implicating PLC in the direct regulation of lipid biosynthesis.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Inositol / metabolism*
Lipids / biosynthesis*
Phosphoinositide Phospholipase C / metabolism*
Saccharomyces cerevisiae / genetics
Saccharomyces cerevisiae / metabolism
Transcription, Genetic*

Substances

Lipids
Inositol
Phosphoinositide Phospholipase C