   3.1.3.73 | malfunction |
the effect of the lack of CobC enzyme on AdoCbl synthesis is most evident when the demand for AdoCbl is high, e.g., during growth on ethanolamine as carbon and energy source. However, when the demand for AdoCbl is low (e.g., synthesis of methionine via the Cbl-dependent methionine synthase), there is no detectable effect on Cbl-dependent growth unless the strain also harbors a null allele of the cobT gene encoding the NaMN:DMB phosphoribosyltransferase enzyme. It is possible that under conditions where low levels of AdoCbl are sufficient to support growth, the activity of a non-specific phosphatase generates alpha-ribazole bypassing the need for CobC activity |
644278 |
