Fig. 8

Putative d-fructose bisphosphate regulation mechanism in relation to d-xylose utilization. Lack of PFK27 expression in response to d-xylose, but not in response to d-fructose, may be linked with low utilization rates and lack of PKA activation. Accumulated sugar phosphates are marked in bold font [43]. Green arrows indicate positive regulation, red hammerheads indicate negative regulation