negative regulation of biosynthetic process
regulation of macromolecule biosynthetic process
negative regulation of macromolecule biosynthetic process
Any process that decreases the rate, frequency or extent of the chemical reactions and pathways resulting in the formation of a macromolecule, any molecule of high relative molecular mass, the structure of which essentially comprises the multiple repetition of units derived, actually or conceptually, from molecules of low relative molecular mass.
negative regulation of macromolecule metabolic process