regulates (processual) regulates glucan biosynthetic process regulation of glucan biosynthetic process Any process that modulates the rate, frequency, or extent of glucan biosynthesis. Glucan biosynthetic processes are the chemical reactions and pathways resulting in the formation of glucans, polysaccharides consisting only of glucose residues. biological_process GO:0010962 2009-05-11T12:17:53Z regulation of polysaccharide biosynthetic process biological regulation