In glycogen or amylopectin synthesis, the enzyme that catalyzes the transfer of a segment of a 1,4-alpha-glucan chain to a primary hydroxy group in a similar glucan chain. EC 2.4.1.18.

Synonyms: Q-Enzyme, Q Enzyme, Branching Enzyme, Starch, Branching Enzyme, 1,4-alpha-Glucan, EC 2.4.1.18, Enzyme, Glycogen Branching, 1,4-alpha-D-Glucan:1,4-alpha-D-glucan 6-alpha-D-(1,4-alpha-D-glucano)-transferase, 1,4-alpha-Glucan Branching Enzyme, Enzyme, Amylopectin Branching, Glycogen Branching Enzyme, Enzyme, 1,4-alpha-Glucan Branching, 1,4 alpha Glucan Branching Enzyme, Branching Enzyme, Glycogen, Glycosyltransferase, Branching, Amylopectin Branching Enzyme, Branching Enzyme, Starch Branching Enzyme, 0, Branching Glycosyltransferase, Enzyme, Branching, Branching Enzyme, Amylopectin, Enzyme, Starch Branching