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, EC 2.4.1.18, Branching Enzyme, Starch, Branching Enzyme, 1,4-alpha-Glucan, Q Enzyme, 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, 1,4 alpha Glucan Branching Enzyme, Enzyme, 1,4-alpha-Glucan Branching, Amylopectin Branching Enzyme, Branching Enzyme, Glycogen, Glycosyltransferase, Branching, Starch Branching Enzyme, Branching Enzyme, Branching Glycosyltransferase, 0, Enzyme, Branching, Branching Enzyme, Amylopectin, Enzyme, Starch Branching