PDB: 1LL3; Gibbons BJ, Roach PJ, Hurley TD (May 2002). "Crystal structure of the autocatalytic initiator of glycogen biosynthesis, glycogenin". J. Mol. Biol. 319 (2): 463–77. doi:10.1016/S0022-2836(02)00305-4. PMID12051921.
Barengo R, Krisman CR (May 1978). "Initiation of glycogen biosynthesis in Escherichia coli. Studies of the properties of the enzymes involved". Biochimica et Biophysica Acta (BBA) - General Subjects. 540 (2): 190–6. doi:10.1016/0304-4165(78)90131-9. PMID418819.
PDB: 1LL3; Gibbons BJ, Roach PJ, Hurley TD (May 2002). "Crystal structure of the autocatalytic initiator of glycogen biosynthesis, glycogenin". J. Mol. Biol. 319 (2): 463–77. doi:10.1016/S0022-2836(02)00305-4. PMID12051921.
Barengo R, Krisman CR (May 1978). "Initiation of glycogen biosynthesis in Escherichia coli. Studies of the properties of the enzymes involved". Biochimica et Biophysica Acta (BBA) - General Subjects. 540 (2): 190–6. doi:10.1016/0304-4165(78)90131-9. PMID418819.