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Article

Activation of a cryptic gene encoding a kinase for L-xylulose opens a new pathway for the utilization of L-lyxose by Escherichia coli.

The Journal of biological chemistry - 25 Nov 1994

Sánchez J C, Gímenez R, Schneider A, Fessner W D, Baldomà L, Aguilar J, Badía J

Abstract excerpt

A silent gene encoding a kinase that specifically phosphorylates L-xylulose was activated and rendered constitutive in mutant cells of Escherichia coli. L-Xylulose kinase was purified to homogeneity and found to be a dimer of two subunits of 55 kDa, highly specific for L-xylulose with a Km of 0.8 mM, a Vmax of 33 mumol/min/mg, and an optimum pH of 8.4. Physical (thin layer chromatography) and spectroscopic...

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PMID: 7961955

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