Synthèse et utilisation de l'amidon chez un flagellé sans chlorophylle incapable d'utiliser les sucres

Properties and kinetics of glucan phosphorylase of the amylose‐forming yeast Cryptococcus laurentii

“…The existence of (w-( 1-4) glucan phosphorylases in microorganisms has been de- (LWOFF et al 1950). I n the present work the glucan phosphorylase of the yeast Cr.…”

“…These results do not prove that the enzyme which synthesizes starch-like materials in vitro is the same as that performing such a function in vivo. However, the correlation is worth noting that certain organisms which synthesize starch or starchlike polymers in vivo have been shown to possess powerful phosphorylases in cell homogenates capable of synthesizing starch-like polymers upon incubation with glucose-1-phosphate (MACER 1947, LWOFF et al 1950. Furthermore, the decrease in phosphorylase level in "starch-deficient" mutants to about 25% of that of the wild type (Table 8), suggests a role for this enzyme in the process of amylose formation.…”

Carbon Nutrition and Metabolism of Polytomella caeca*

“…PoZytomella caeca, is a typical acetate flagellate. I t has been grown in peptone ( 29,30,38,40) and simple media(31, 32,34,51). Previous studies using simple media demonstrated acetate, propionate, butyrate, valerate, ethyl, butyl, and amyl alcohols.…”