label: Reduced muscle 6-phosphofructokinase activity
label_lc: reduced muscle 6-phosphofructokinase activity
description: "Activity of the enzyme 6-phosphofructokinase in muscle tissue is below the lower limit of normal. 6-phosphofructokinase (EC 2.7.1.11) is also known as phosphofructokinase I and phosphohexokinase. The PFKM gene encodes the muscle isoform of phosphofructokinase. PFK catalyzes the irreversible conversion of fructose-6-phosphate to fructose-1,6-bisphosphate and is a key regulatory enzyme in glycolysis."