This domain family is found in bacteria and archaea, and is typically between 218 and 229 amino acids in length. The family is found in association with Pfam:PF06202. Glycogen debranching enzyme catalyses the debranching of amylopectin in glycogen. This is done by transferring three glucose subunits of glycogen from one parallel chain to another. This has the effect of enabling the glucose residues to become more accessible for glycolysis.

1: Cloning and characterization of glycogen-debranching enzyme from hyperthermophilic archaeon Sulfolobus shibatae. Van TT, Ryu SI, Lee KJ, Kim EJ, Lee SB; J Microbiol Biotechnol. 2007;17:792-799. PMID:18051301