Tags: Enzyme.
In enzymology a mannose-1-phosphate guanylyltransferase (GDP) (EC 2.7.7.22) is an enzyme that catalyzes the chemical reactionGDP + alpha-D-mannose 1-phosphate phosphate + GDP-mannoseThus the two substrates of this enzyme are GDP and alpha-D-mannose 1-phosphate whereas its two products are phosphate and GDP-mannose.This enzyme belongs to the family of transferases specifically those transferring phosphorus-containing nucleotide groups (nucleotidyltransferases).