lactose

362,296 routes · scope human · up to 3 steps · built 5 October 2026 · Reactions · API

34 compounds within 3 steps: 3 in 1, 9 in 2, 22 in 3

One step

beta-D-galactoseReach from here →
1. lactose + H2O = beta-D-galactose + D-glucose
Catalysed by LCT
D-glucoseReach from here →
1. lactose + H2O = beta-D-galactose + D-glucose
Catalysed by LCT
beta-D-galactosyl-(1->4)-[alpha-L-fucosyl-(1->3)]-D-glucoseReach from here →
1. lactose + GDP-beta-L-fucose = beta-D-galactosyl-(1->4)-[alpha-L-fucosyl-(1->3)]-D-glucose + GDP + H(+)
Catalysed by FUT3, FUT6

Two steps

beta-D-glucoseReach from here →
1. lactose + H2O = beta-D-galactose + D-glucose
2. D-glucose 1-epimerase
Catalysed by LCT, GALMcytosol
CHEBI:16174Reach from here →
1. lactose + H2O = beta-D-galactose + D-glucose
2. dATP:D-glucose 6-phosphotransferase
Catalysed by LCT, HK1, HK2, HK3 and 1 morecytosol
D-glucono-1,5-lactoneReach from here →

Three steps

pyruvateReach from here →
Catalysed by LCT, HK1, HK2, HK3 and 3 morecytosol
keto-D-fructose 6-phosphateReach from here →
Catalysed by LCT and 3 more

Catalysed by LCT, H6PDOne of 2 routes

CHEBI:17808Reach from here →

Catalysed by LCT, HK1, HK2, HK3 and 1 morecytosol

D-glucitolReach from here →

Catalysed by LCTcytosolOne of 3 routes

alpha-D-galactoseReach from here →

Catalysed by LCT, GALM

alpha-lactoseReach from here →

Catalysed by LCT, B4GALT2, LALBA, B4GALT1Golgi apparatus

D-glucopyranose 6-phosphateReach from here →

Catalysed by LCT, HK1, GCK, HK2 and 2 morecytosolOne of 5 routes

D-glucose 6-phosphateReach from here →

Catalysed by LCT, ADPGKOne of 2 routes

, HK1

, GCK

, HK2

cytosol

thioredoxin dithiolReach from here →

Catalysed by LCT, HK1, HK2, HK3 and 6 morecytosol, mitochondrial matrixOne of 2 routes

CHEBI:16039Reach from here →

Catalysed by LCT, HK1, HK2, HK3 and 6 morecytosolOne of 3 routes

CHEBI:16284Reach from here →

Catalysed by LCT, HK1, HK2, HK3 and 6 morecytosolOne of 16 routes

alpha,alpha-trehaloseReach from here →

Catalysed by LCT, GALM, TREHcytosol

galactitolReach from here →

Catalysed by LCT, GALM, AKR1B1cytosol

CHEBI:17202Reach from here →

Catalysed by LCT, HK1, HK2, HK3 and 9 morecytosol, extracellular space

alpha-D-glucoseReach from here →

Catalysed by LCT, GALMcytosol

a beta-D-Gal-(1->4)-beta-D-Glc-(1<->1)-Cer(d18:1(4E))Reach from here →

Catalysed by LCT, GALM, GLB1, GLB1Lextracellular space

dTDPReach from here →

Catalysed by LCT, HK1, HK2, HK3 and 7 morecytosolOne of 3 routes

D-gluconateReach from here →

Catalysed by LCT, H6PD, RGN

NAADPHReach from here →

Catalysed by LCT, ADPGK, G6PD

beta-D-fructoseReach from here →

Catalysed by LCT, SORDcytosol

keto-D-fructoseReach from here →

Catalysed by LCT, SORDcytosol

dCMPReach from here →

Catalysed by LCT, HK1, HK2, HK3 and 2 morecytosolOne of 2 routes

dGMPReach from here →

Catalysed by LCT, HK1, HK2, HK3 and 1 morecytosol, mitochondrial matrix

6-phospho-D-glucono-1,5-lactoneReach from here →

Catalysed by LCT, HK1, GCK, HK2 and 3 morecytosol, endoplasmic reticulumOne of 6 routes

alpha-D-galactose 1-phosphateReach from here →

Catalysed by LCT, GALM, GALK1, GALK2cytosolOne of 2 routes

1D-myo-inositol 3-phosphateReach from here →

Catalysed by LCT, HK1, GCK, HK2 and 3 morecytosolOne of 2 routes

D-mannose 6-phosphateReach from here →

Catalysed by LCT, ADPGK, GPI

dTMPReach from here →

Catalysed by LCT, HK1, HK2, HK3 and 2 morecytosol, mitochondrial matrixOne of 2 routes