The function of Ensembl gene identifier ENSG00000101638 (ST8SIA5, ST8 alpha-N-acetyl-neuraminide alpha-2,8-sialyltransferase 5) is as follows. Involved in the synthesis of gangliosides GD1c, GT1a, GQ1b, GP1c and GT3 from GD1a, GT1b, GM1b and GD3 respectively. .