UDP-alpha-D-galactose
362,296 routes · scope human · up to 3 steps · built 5 October 2026 · Reactions · API
166 compounds within 3 steps: 37 in 1, 61 in 2, 68 in 3
Three steps
- a beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->4)-beta-D-GlcNAc derivativeReach from here →
- UDP-N-acetyl-alpha-D-glucosamine(out) + UDP-alpha-D-galactose(in) = UDP-N-acetyl-alpha-D-glucosamine(in) + UDP-alpha-D-galactose(out)
- a beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->4)-beta-D-GlcNAc derivative + UDP-N-acetyl-alpha-D-glucosamine = a beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->3)-[beta-D-GlcNAc-(1->6)]-beta-D-Gal-(1->4)-N-acetyl-beta-D-GlcNAc derivative + UDP + H(+)
- a beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->4)-beta-D-GlcNAc derivative + UDP-N-acetyl-alpha-D-glucosamine = a beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->3)-[beta-D-GlcNAc-(1->6)]-beta-D-Gal-(1->4)-N-acetyl-beta-D-GlcNAc derivative + UDP + H(+)
Catalysed by SLC35A2, GCNT3, GCNT2inner side of the membrane, outer side of the membrane
- an N-acylsphing-4-enine + UDP-alpha-D-galactose = a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + UDP + H(+)
- a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + H2O = D-galactose + an N-acylsphing-4-enine
- an N-acylsphing-4-enine + 2 Fe(II)-[cytochrome b5] + O2 + 2 H(+) = an N-acyl-sphinga-4E,14Z-dienine + 2 Fe(III)-[cytochrome b5] + 2 H2O
- D-glucose + UDP-alpha-D-galactose = lactose + UDP + H(+)
- lactose + H2O = beta-D-galactose + D-glucose
- D-glucose 1-epimerase
Catalysed by B4GALT2, B4GALT1, LCT, GALMcytosolOne of 4 routes
- an N-acylsphing-4-enine + UDP-alpha-D-galactose = a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + UDP + H(+)
- a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + H2O = D-galactose + an N-acylsphing-4-enine
- a beta-D-glucosyl-(1<->1')-N-acylsphing-4-enine + cholesterol = cholesteryl 3-beta-D-glucoside + an N-acylsphing-4-enine
Catalysed by UGT8, GBA1, GALC, GBA3 and 1 moreOne of 5 routes
- an N-acylsphing-4-enine + UDP-alpha-D-galactose = a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + UDP + H(+)
- a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + 3'-phosphoadenylyl sulfate = an N-acyl-1-beta-D-(3-O-sulfo)-galactosyl-sphing-4-enine + adenosine 3',5'-bisphosphate + H(+)
- Sulfatide sulfohydrolase
Catalysed by UGT8, GAL3ST1, ARSA, ARSD and 1 morelysosomeOne of 2 routes
- alpha-D-galactose 1-phosphate + UDP-alpha-D-glucose = alpha-D-glucose 1-phosphate + UDP-alpha-D-galactose
- UDP-glucose:alpha-D-galactose-1-phosphate uridylyltransferase
- UDP-alpha-D-galactose:sphingosine 1-beta-galactosyltransferase
Catalysed by GALTcytosol
- UDP-N-acetyl-alpha-D-glucosamine(out) + UDP-alpha-D-galactose(in) = UDP-N-acetyl-alpha-D-glucosamine(in) + UDP-alpha-D-galactose(out)
- UDP-N-acetyl-alpha-D-glucosamine + H2O = aldehydo-N-acetyl-D-mannosamine + UDP + H(+)
- aceneuramate = aldehydo-N-acetyl-D-mannosamine + pyruvate
Catalysed by SLC35A2, GNE, NPLinner side of the membrane, outer side of the membrane
- alpha-D-galactose 1-phosphate + UDP-alpha-D-glucose = alpha-D-glucose 1-phosphate + UDP-alpha-D-galactose
- an N-acylsphing-4-enine + UDP-alpha-D-glucose = a beta-D-glucosyl-(1<->1')-N-acylsphing-4-enine + UDP + H(+)
- a beta-D-glucosyl-(1<->1')-N-acylsphing-4-enine + cholesterol = cholesteryl 3-beta-D-glucoside + an N-acylsphing-4-enine
- an N-acylsphing-4-enine + UDP-alpha-D-galactose = a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + UDP + H(+)
- a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + H2O = D-galactose + an N-acylsphing-4-enine
- ceramide:phosphatidylcholine cholinephosphotransferase
Catalysed by UGT8, GBA1, GALC, GBA3 and 3 moreGolgi apparatusOne of 8 routes
- an N-acylsphing-4-enine + UDP-alpha-D-galactose = a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + UDP + H(+)
- a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + H2O = D-galactose + an N-acylsphing-4-enine
- ceramide:phosphatidylcholine cholinephosphotransferase
Catalysed by UGT8, GBA1, GALC, GBA3 and 3 moreGolgi apparatusOne of 6 routes
- an N-acylsphing-4-enine + UDP-alpha-D-galactose = a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + UDP + H(+)
- a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + H2O = D-galactose + an N-acylsphing-4-enine
- a beta-D-xylosyl-(1<->1')-N-acylsphing-4-enine + cholesterol = cholesteryl 3-beta-D-xyloside + an N-acylsphing-4-enine
Catalysed by UGT8, GBA1, GALC, GBA3 and 1 moreOne of 2 routes
- an alpha-Neu5Ac-(2->8)-alpha-Neu5Ac-(2->3)-beta-D-Gal-(1->4)-beta-D-GlcNAc derivativeReach from here →
- an N-acetyl-beta-D-glucosaminyl derivative + UDP-alpha-D-galactose = a beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl derivative + UDP + H(+)
- a beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl derivative + CMP-N-acetyl-beta-neuraminate = an N-acetyl-alpha-neuraminyl-(2->3)-beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl derivative + CMP + H(+)
- an N-acetyl-alpha-neuraminyl-(2->3)-beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl derivative + CMP-N-acetyl-beta-neuraminate = an alpha-Neu5Ac-(2->8)-alpha-Neu5Ac-(2->3)-beta-D-Gal-(1->4)-beta-D-GlcNAc derivative + CMP + H(+)
- a beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->4)-beta-D-Glc-(1<->1)-Cer(d18:1(4E)) + UDP-alpha-D-galactose = a neolactoside nLc4Cer(d18:1(4E)) + UDP + H(+)
- a neolactoside nLc4Cer(d18:1(4E)) + GDP-beta-L-fucose = a neolactoside IV(2)-alpha-Fuc-nLc4Cer(d18:1(4E)) + GDP + H(+)
- a neolactoside IV(2)-alpha-Fuc-nLc4Cer(d18:1(4E)) + H2O = a neolactoside nLc4Cer(d18:1(4E)) + L-fucose
- a 6-O-sulfo-N-acetyl-beta-D-glucosaminyl-(1->3)-beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl derivativeReach from here →
- an N-acetyl-beta-D-glucosaminyl derivative + UDP-alpha-D-galactose = a beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl derivative + UDP + H(+)
- a beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl derivative + UDP-N-acetyl-alpha-D-glucosamine = an N-acetyl-beta-D-glucosaminyl-(1->3)-beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl derivative + UDP + H(+)
- an N-acetyl-beta-D-glucosaminyl-(1->3)-beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl derivative + 3'-phosphoadenylyl sulfate = a 6-O-sulfo-N-acetyl-beta-D-glucosaminyl-(1->3)-beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl derivative + adenosine 3',5'-bisphosphate + H(+)
- a ganglioside GM2 (d18:1(4E)) + UDP-alpha-D-galactose = a ganglioside GM1 (d18:1(4E)) + UDP + H(+)
- beta-galactosidase (GM1)
- a ganglioside GM2 (d18:1(4E)) + H2O = a ganglioside GM3 (d18:1(4E)) + N-acetyl-beta-D-galactosamine
Catalysed by B3GALT4, LCT, GLB1, GLB1L and 3 morecytosolOne of 2 routes
- UDP-N-acetyl-alpha-D-glucosamine(out) + UDP-alpha-D-galactose(in) = UDP-N-acetyl-alpha-D-glucosamine(in) + UDP-alpha-D-galactose(out)
- a 1,2-diacyl-sn-glycero-3-phospho-(1D-myo-inositol) + UDP-N-acetyl-alpha-D-glucosamine = a 6-(N-acetyl-alpha-D-glucosaminyl)-1-(1,2-diacyl-sn-glycero-3-phospho)-1D-myo-inositol + UDP + H(+)
- phosphatidylinositol glycan anchor biosynthesis class L
Catalysed by SLC35A2, PIGA, PIGLinner side of the membrane, outer side of the membrane, endoplasmic reticulumOne of 3 routes
- D-glucose + UDP-alpha-D-galactose = lactose + UDP + H(+)
- lactose + H2O = beta-D-galactose + D-glucose
- UDP-alpha-D-galactose:D-glucose 4-beta-D-galactosyltransferase
Catalysed by B4GALT2, B4GALT1, LCT, LALBAGolgi apparatusOne of 2 routes
- D-glucose + UDP-alpha-D-galactose = lactose + UDP + H(+)
- lactose + H2O = beta-D-galactose + D-glucose
- ATP:D-glucose 6-phosphotransferase
Catalysed by B4GALT2, B4GALT1, LCT, HK1 and 4 morecytosolOne of 5 routes
- UDP-N-acetyl-alpha-D-glucosamine(out) + UDP-alpha-D-galactose(in) = UDP-N-acetyl-alpha-D-glucosamine(in) + UDP-alpha-D-galactose(out)
- UDP-N-acetyl-alpha-D-glucosamine + H2O = aldehydo-N-acetyl-D-mannosamine + UDP + H(+)
- N-acetyl-D-glucosamine 2-epimerase
Catalysed by SLC35A2, GNE, RENBPinner side of the membrane, outer side of the membrane, cytosol
- UDP-N-acetyl-alpha-D-glucosamine(out) + UDP-alpha-D-galactose(in) = UDP-N-acetyl-alpha-D-glucosamine(in) + UDP-alpha-D-galactose(out)
- UDP-N-acetyl-alpha-D-glucosamine + H2O = N-acetyl-alpha-D-glucosamine 1-phosphate + UMP + 2 H(+)
- N-acetyl-alpha-D-glucosamine 1-phosphate = N-acetyl-D-glucosamine 6-phosphate
Catalysed by SLC35A2, ENPP3, PGM3inner side of the membrane, outer side of the membrane
- an N-acylsphing-4-enine + UDP-alpha-D-galactose = a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + UDP + H(+)
- a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + H2O = D-galactose + an N-acylsphing-4-enine
- acyl-CoA:sphingosine N-acyltransferase
Catalysed by UGT8, GBA1, GALC, GBA3 and 5 moreGolgi apparatusOne of 4 routes
- a ganglioside GM2 (d18:1(4E)) + UDP-alpha-D-galactose = a ganglioside GM1 (d18:1(4E)) + UDP + H(+)
- Sialidase, Cytosol (Neu2)
- CTP:N-acetylneuraminate cytidylyltransferase
Catalysed by B3GALT4, NEU2, CMAScytosol, nucleusOne of 2 routes
- UDP-N-acetyl-alpha-D-glucosamine(out) + UDP-alpha-D-galactose(in) = UDP-N-acetyl-alpha-D-glucosamine(in) + UDP-alpha-D-galactose(out)
- a 1,2-diacyl-sn-glycero-3-phospho-(1D-myo-inositol) + UDP-N-acetyl-alpha-D-glucosamine = a 6-(N-acetyl-alpha-D-glucosaminyl)-1-(1,2-diacyl-sn-glycero-3-phospho)-1D-myo-inositol + UDP + H(+)
- phosphatidylinositol glycan anchor biosynthesis class L
Catalysed by SLC35A2, PIGA, PIGLinner side of the membrane, outer side of the membrane, endoplasmic reticulumOne of 3 routes
- alpha-D-galactose 1-phosphate + UDP-alpha-D-glucose = alpha-D-glucose 1-phosphate + UDP-alpha-D-galactose
- alpha-D-galactose 1-phosphate + UDP-alpha-D-glucose = alpha-D-glucose 1-phosphate + UDP-alpha-D-galactose
- (2R)-3-phospho-glyceroyl phosphate + alpha-D-glucose 1-phosphate = alpha-D-glucose 1,6-bisphosphate + (2R)-3-phosphoglycerate + H(+)
- an N-acylsphing-4-enine + UDP-alpha-D-galactose = a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + UDP + H(+)
- a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + H2O = D-galactose + an N-acylsphing-4-enine
- acyl-CoA:sphingosine N-acyltransferase
Catalysed by UGT8, GBA1, GALC, GBA3 and 5 moreGolgi apparatusOne of 2 routes
- alpha-D-galactose 1-phosphate + UDP-alpha-D-glucose = alpha-D-glucose 1-phosphate + UDP-alpha-D-galactose
- alpha-D-galactose 1-phosphate + UDP-alpha-D-glucose = alpha-D-glucose 1-phosphate + UDP-alpha-D-galactose
- (2R)-3-phospho-glyceroyl phosphate + alpha-D-glucose 1-phosphate = alpha-D-glucose 1,6-bisphosphate + (2R)-3-phosphoglycerate + H(+)
- UDP-N-acetyl-alpha-D-glucosamine(out) + UDP-alpha-D-galactose(in) = UDP-N-acetyl-alpha-D-glucosamine(in) + UDP-alpha-D-galactose(out)
- UDP-N-acetyl-alpha-D-glucosamine + H2O = aldehydo-N-acetyl-D-mannosamine + UDP + H(+)
- ATP:N-acyl-D-mannosamine 6-phosphotransferase
Catalysed by SLC35A2, GNEinner side of the membrane, outer side of the membrane, cytosolOne of 2 routes
- an N-acylsphing-4-enine + UDP-alpha-D-galactose = a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + UDP + H(+)
- a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + H2O = D-galactose + an N-acylsphing-4-enine
- an N-acylsphing-4-enine + a 1,2-diacyl-sn-glycero-3-phosphoethanolamine = an N-acylsphing-4-enine 1-phosphoethanolamine + a 1,2-diacyl-sn-glycerol
- an N-acylsphing-4-enine + UDP-alpha-D-galactose = a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + UDP + H(+)
- a beta-D-galactosyl-(1<->1')-N-acylsphing-4-enine + cholesterol = cholesteryl 3-beta-D-galactoside + an N-acylsphing-4-enine
- 1-(beta-D-galactosyl)-N-dodecanoylsphing-4-enine + cholesterol = cholesteryl 3-beta-D-galactoside + N-dodecanoylsphing-4-enine