PHOSPHOENOLPYRUVATE PHOSPHOMUTASE ACTIVITY IN AN L-PHOSPHONOALANINE-MINERALIZING STRAIN OF BURKHOLDERIA-CEPACIA

A strain of Burkholderia cepacia isolated by enrichment culture utiliz ed L-2-amino-3-phosphonopropionic acid (phosphonoalanine) at concentra tions up to 20 mM as a carbon, nitrogen, and phosphorus source in a ph osphate-insensitive manner. Cells contained phosphoenolpyruvate phosph omutase activity, presumed to be responsible for cleavage of the C-P b ond of phosphonopyruvate, the transamination product of L-phosphonoala nine; this was inducible in the presence of phosphonoalanine.