Catalytic activity:D-glucose 6-phosphate + NADP(+) = D-glucono-1,5-lactone 6-phosphate + NADPH.,Disease:Defects in G6PD are the cause of chronic non-spherocytic hemolytic anemia (CNSHA) [MIM:305900]. Deficiency of G6PD is associated with hemolytic anemia in two different situations. First, in areas in which malaria has been endemic, G6PD-deficiency alleles have reached high frequencies (1% to 50%) and deficient individuals, though essentially asymptomatic in the steady state, have a high risk of acute hemolytic attacks. Secondly, sporadic cases of G6PD deficiency occur at a very low frequencies, and they usually present a more severe phenotype. Several types of CNSHA are recognized. Class-I variants are associated with severe NSHA; class-II have an activity <10% of normal; class-III have an activity of 10% to 60% of normal; class-IV have near normal activity.,Function:Produces pentose sugars for nucleic acid synthesis and main producer of NADPH reducing power.,miscellaneous:Has NADP both as cofactor (bound to the N-terminal domain) and as structural element bound to the C-terminal domain.,online information:G6PD deficiency resource,online information:G6PD mutation database,online information:The Singapore human mutation and polymorphism database,pathway:Carbohydrate degradation; pentose phosphate pathway.,pathway:Carbohydrate degradation; pentose phosphate pathway; D-ribulose 5-phosphate from D-glucose 6-phosphate (oxidative stage): step 1/3.,polymorphism:The sequence shown is that of variant B, the most common variant.,similarity:Belongs to the glucose-6-phosphate dehydrogenase family.,subunit:Homodimer or homotetramer.,tissue specificity:The long isoform is found in lymphoblasts, granulocytes and sperm.,
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