Phosphate starvation inducible

Phosphate starvation inducible enzymes and proteins in higher plants... 

Many of the E. coli psi genes function to enhance Pi availability in, and uptake from, the external medium. For example, phosphate starvation induces pho A whose product is alkaline phosphatase, a hydrolytic enzyme that is excreted into the periplasmic space where it acts to cleave extracellular organic P to Pi. A second psi gene system, the phosphate-specific transport (Pst) operon uses energy to transport Pi across the E. coli membrane. The affinity of this four-gene transport system is much greater than that of the constitutive Pi shuttle. Many of these same molecular starvation rescue mechanisms have been characterised in yeast. 

Glund, K. Goldstein, A.H. (1992). Regulation, synthesis and secretion of a phosphate starvation inducible RNase by cultured tomato cells. In Control of Plant Gene Expression, ed. D.P.S. Verma. Boca Raton CRC Press. 

Goldstein, A.H., Baertlein, D.A. McDaniel, R.G. (1988a). Phosphate starvation inducible metabolism in L. esculentum I. Plant Physiology 87, 711-15. 

Raskin and Haran 6,544,789 3/13/00 4/8/03 Phytomedics, Inc. Phosphate-starvation-induced promoter/hydroponic secretion. 

Antelmann, H., Scharf, C. and Hecker, M. (2000) Phosphate starvation-inducible proteins of Bacillus subtilis proteomics and transcriptional analysis. Journal of Bacteriology 182, 4478-4490. 

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