Alpha-N-acetylgalactosaminide alpha-2,6-sialyltransferase 2 is an enzyme that in humans is encoded by the ST6GALNAC2 gene. ST6GALNAC2 belongs to a family of sialyltransferases that add sialic acids to the nonreducing ends of glycoconjugates. At the cell surface, these modifications have roles in cell-cell and cell-substrate interactions, bacterial adhesion, and protein targeting (Samyn-Petit et al., 2000 [PubMed 10742600]).[supplied by OMIM].