. "Glycolipid biosynthesis; 4-amino-4-deoxy-alpha-L-arabinose undecaprenyl phosphate biosynthesis; 4-amino-4-deoxy-alpha-L-arabinose undecaprenyl phosphate from UDP-4-deoxy-4-formamido-beta-L-arabinose and undecaprenyl phosphate: step 1/2." . .