2GAM:
reference: X-ray Crystal Structure of Leukocyte Type Core 2 beta1,6-N-Acetylglucosaminyltransferase: EVIDENCE FOR A CONVERGENCE OF METAL ION-INDEPENDENT GLYCOSYLTRANSFERASE MECHANISM., Pak JE, Arnoux P, Zhou S, Sivarajah P, Satkunarajah M, Xing X, Rini JM, J Biol Chem. 2006 Sep 8;281(36):26693-701. Epub 2006 Jul 7. PMID: 16829524

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