IUBMB Enzyme Nomenclature


Accepted name: glucosylceramide β-1,4-galactosyltransferase

Reaction: UDP-α-D-galactose + β-D-glucosyl-(1↔1)-ceramide = UDP + β-D-galactosyl-(1→4)-β-D-glucosyl-(1↔1)-ceramide

For diagram of reaction click here.

Other name(s): lactosylceramide synthase; uridine diphosphate-galactose:glucosyl ceramide, β 1-4 galactosyltransferase; UDP-Gal:glucosylceramide β1→4galactosyltransferase; GalT-2 (misleading); UDP-galactose:β-D-glucosyl-(1↔1)-ceramide β-1,4-galactosyltransferase

Systematic name: UDP-α-D-galactose:β-D-glucosyl-(1↔1)-ceramide 4-β-galactosyltransferase

Comments: Involved in the synthesis of several different major classes of glycosphingolipids.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number:


1. Chatterjee, S. and Castiglione, E. UDPgalactose:glucosylceramide β1→4-galactosyltransferase activity in human proximal tubular cells from normal and familial hypercholesterolemic homozygotes. Biochim. Biophys. Acta 923 (1987) 136-142. [PMID: 3099851]

2. Trinchera, M., Fiorilli, A. and Ghidoni, R. Localization in the Golgi apparatus of rat liver UDP-Gal:glucosylceramide β1→4galactosyltransferase. Biochemistry 30 (1991) 2719-2724. [PMID: 1900430]

3. Chatterjee, S., Ghosh, N. and Khurana, S. Purification of uridine diphosphate-galactose:glucosyl ceramide, β 1-4 galactosyltransferase from human kidney. J. Biol. Chem. 267 (1992) 7148-7153. [PMID: 1551920]

4. Nomura, T., Takizawa, M., Aoki, J., Arai, H., Inoue, K., Wakisaka, E., Yoshizuka, N., Imokawa, G., Dohmae, N., Takio, K., Hattori, M. and Matsuo, N. Purification, cDNA cloning, and expression of UDP-Gal: glucosylceramide β-1,4-galactosyltransferase from rat brain. J. Biol. Chem. 273 (1998) 13570-13577. [PMID: 9593693]

5. Takizawa, M., Nomura, T., Wakisaka, E., Yoshizuka, N., Aoki, J., Arai, H., Inoue, K., Hattori, M. and Matsuo, N. cDNA cloning and expression of human lactosylceramide synthase. Biochim. Biophys. Acta 1438 (1999) 301-304. [PMID: 10320813]

[EC created 2011]

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