Biochem/physiol Actions

Phosphoglucomutase-1 (PGM1) catalyzes the bidirectional interconversion of glucose-1-phosphate (G-1-P) and glucose-6-phosphate (G-6-P). It regulates carbohydrate metabolism, energy production, and protein N-glycosylation. PGM1 participates in the biosynthesis of nucleotide sugars required for glycan biosynthesis. Variation in the PGM1 gene leads to PGM1 deficiency, which is considered an inherited metabolic disorder in humans. PGM1 deficiency causes autosomal recessive diseases such as glycogen storage disease type XIV and congenital disorder of protein N-glycosylation. Affected patients show multiple disease phenotypes, reflecting the central role of the enzyme in glucose homeostasis. The influence of PGM1 deficiency on protein glycosylation patterns is also widespread. PGM1 acts as a metabolic tumor suppressor.

General description

Phosphoglucomutase-1 (PGM1) is an evolutionarily conserved enzyme that belongs to the phosphohexose mutase family. It is the major isoform of PGM in skeletal muscle and most other tissues. The PGM1 gene is mapped to human chromosome 1p31.3.

Physical form

Supplied as a lyophilized powder containing tris-buffered saline, EDTA, DTT and stabilizer.

Unit Definition

One unit will convert 1.0 µmole of α-D-Glucose-1-Phosphate to α-D-Glucose-6-phosphate per minute at pH 7.4 at 30 °C.