(GenBank) Mannose-1-phosphate guanylyltransferase (NP_787484.1| Mannose-1-phosphate guanylyltransferase [Tropheryma whipplei str. Twist]; ZP_00225994.1| COG0836: Mannose-1-phosphate guanylyltransferase [Kineococcus radiotolerans SRS30216]). INVOLVED IN GDP-MANNOSE BIOSYNTHESIS WHICH SERVES AS THE ACTIVATED SUGAR NUCLEOTIDE PRECURSOR FOR MANNOSE RESIDUES IN CELL SURFACE POLYSACCHARIDES. InterPro: ADP-glucose pyrophosphorylase. pfam00483, NTP_transferase, Nucleotidyl transferase. This family includes a wide range of enzymes which transfer nucleotides onto phosphosugars.; High confidence in function and specificity