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  • Title: Transport kinetics of 6-deoxy-D-glucose in Candida parapsilosis.
    Author: Kotyk A, Michaljanicová D.
    Journal: Folia Microbiol (Praha); 1978; 23(1):18-26. PubMed ID: 23984.
    Abstract:
    The strictly aerobic yeast Candida parapsilosis transports the nonmetabolizable monosaccharide 6-deoxy-D-glucose by an active process (inhibition by 2.4-dinitrophenol and other uncouplers but not by iodoacetamide), the accumulation ratio decreasing with increasing substrate concentration. Measured accumulation ratios are in agreement with those predicted from kinetic constants for influx and efflux. Energy for transport is probably required in the translocation step. The maximum rate is temperature-dependent with a transition point at 21 degrees C. the accumulation ratio is not. The uptake is most active at pH 4.5--8.5. It appears not to involve stoichiometric proton symport. The transport system is shared by D-glucose, D-mannose, D-galactose and possibly maltose but not by fructose, sucrose or pentoses. The apparent half-life of the transport system was 3.5--4 h.
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