Involved in the synthesis of gangliosides GD1c, GT1a, GQ1b, GP1c and GT3 from GD1a, GT1b, GM1b and GD3 respectively. CMP-N-acetyl-beta-neuraminate + ganglioside GQ1c (d18:1(4E)) = CMP + ganglioside GP1c (d18:1(4E)) + H(+) Protein modification; protein glycosylation. Belongs to the glycosyltransferase 29 family.