Aliases for PYGL Gene
External Ids for PYGL Gene
Previous GeneCards Identifiers for PYGL Gene
This gene encodes a homodimeric protein that catalyses the cleavage of alpha-1,4-glucosidic bonds to release glucose-1-phosphate from liver glycogen stores. This protein switches from inactive phosphorylase B to active phosphorylase A by phosphorylation of serine residue 15. Activity of this enzyme is further regulated by multiple allosteric effectors and hormonal controls. Humans have three glycogen phosphorylase genes that encode distinct isozymes that are primarily expressed in liver, brain and muscle, respectively. The liver isozyme serves the glycemic demands of the body in general while the brain and muscle isozymes supply just those tissues. In glycogen storage disease type VI, also known as Hers disease, mutations in liver glycogen phosphorylase inhibit the conversion of glycogen to glucose and results in moderate hypoglycemia, mild ketosis, growth retardation and hepatomegaly. Alternative splicing results in multiple transcript variants encoding different isoforms.[provided by RefSeq, Feb 2011]
GeneCards Summary for PYGL Gene
PYGL (Phosphorylase, Glycogen, Liver) is a Protein Coding gene. Diseases associated with PYGL include Glycogen Storage Disease Vi and Glycogen Storage Disease Due To Liver Glycogen Phosphorylase Deficiency. Among its related pathways are Glycosaminoglycan metabolism and Glucagon signaling pathway. GO annotations related to this gene include protein homodimerization activity and drug binding. An important paralog of this gene is PYGB.
UniProtKB/Swiss-Prot for PYGL Gene
Phosphorylase is an important allosteric enzyme in carbohydrate metabolism. Enzymes from different sources differ in their regulatory mechanisms and in their natural substrates. However, all known phosphorylases share catalytic and structural properties.