2006•Applied and Environmental MicrobiologyOpen access

Polyphosphate Accumulation by Pseudomonas putida CA-3 and Other Medium-Chain-Length Polyhydroxyalkanoate-Accumulating Bacteria under Aerobic Growth Conditions

Karen M. Tobin, John W. McGrath, Alan Mullan, John P. Quinn, Kevin E. O’Connor

Abstract

Pseudomonas putida CA-3 accumulates polyphosphate (polyP) and medium-chain-length polyhydroxyalkanoate (mclPHA) concurrently under nitrogen limitation. Five other mclPHA-accumulating Pseudomonas strains are capable of simultaneous polyP and mclPHA biosynthesis. It appears that polyP is not the rate-limiting step for mclPHA accumulation in these Pseudomonas strains.

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Key concepts: Polyhydroxyalkanoates, Pseudomonas putida, Polyphosphate, Pseudomonas, Bacteria, Pseudomonadales, Pseudomonadaceae, Biochemistry