Characterization of the glucose transport systems in Neurospora crassa sl.

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RESUMO

Neurospora crassa sl, a mutant that lacks a rigid cell wall, exhibits transport systems for glucose similar to those of wild-type strain 1A. When the orgnism is grown in a medium containing 50 mM glucose as the carbon source, glucose is transported primarily by a glucose-facilitated diffusion system (GluI). When it is grown in a medium with little or no glucose present, a glucose active transport system (Glu II) is expressed. Both of these systems are similar kinetically to those in the wild type. Significant differences do exist between strains sl and 1A with respect to genetic regulation of the glucose active transport system.

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