GO:0008489

UDP-galactose:glucosylceramide beta-1,4-galactosyltransferase activity

Details: 
Catalysis of the reaction: UDP-D-galactose + a glucosylceramide = a lactosylceramide + uridine-5'-diphosphate. The glucosylceramide has sphinganine as the long chain base. [MetaCyc:RXN-10764, PMID:9593693]
Evidence Code: