Compound

alpha-D-galactose 1-phosphate

An organophosphate oxoanion arising from deprotonation of the phosphate OH groups of α-D-galactose 1-phosphate; major species at pH 7.3.

Definition from ChEBI (CHEBI:58336), read 2026-09-23. CC BY 4.0.

CHEBI:58336ChEBI

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Structure

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A generated conformer of alpha-D-galactose 1-phosphate — one low-energy arrangement PubChem computed, not a measured structure. Hydrogens are not drawn; the formula counts them.

Class: Organic compound, anion
Formula: C6H11O9P
Mass: 258.119 g/mol
Charge: -2
InChIKey: HXXFSFRBOHSIMQ-FPRJBGLDSA-L
SMILES: O=P([O-])([O-])O[C@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O
Look it up: ChEBI PubChem By InChIKey

Identity from ChEBI, geometry from PubChem. Not evidence.

What it touches on the way

Mechanistic reach

2 entities

2 entities reached.

0 reported hops2 assembled from the scaffold

What the reference databases state

Statements

13 statements

13 statements · 2 reference databases · Subject: alpha-D-galactose 1-phosphate · Sources: Human-GEM, Rhea

Order

alpha-D-galactose is converted to alpha-D-galactose 1-phosphateCompoundHuman-GEM MAR04130Inferred only
alpha-D-galactose is converted to alpha-D-galactose 1-phosphateCompoundRhea RHEA:13553Inferred only
alpha-D-galactose 1-phosphate is converted to CHEBI:67119CompoundHuman-GEM MAR08767Inferred only
alpha-D-galactose 1-phosphate is converted to D-galactoseCompoundRhea RHEA:29315Inferred only
alpha-D-galactose 1-phosphate is converted to UDP-alpha-D-galactoseCompoundRhea RHEA:14209Inferred only
UDP-alpha-D-galactose is converted to alpha-D-galactose 1-phosphateCompoundRhea RHEA:14209Inferred only
UDP-alpha-D-galactose is converted to alpha-D-galactose 1-phosphateCompoundRhea RHEA:86579Inferred only
alpha-D-galactose 1-phosphate is converted to UDP-alpha-D-glucoseCompoundRhea RHEA:29551Inferred only
UDP-alpha-D-glucose is converted to alpha-D-galactose 1-phosphateCompoundRhea RHEA:29551Inferred only
alpha-D-galactose 1-phosphate is a substrate of GALTProteinRhea RHEA:13989Inferred only
alpha-D-galactose 1-phosphate is a substrate of GALTProteinHuman-GEM MAR08767Inferred only
alpha-D-galactose 1-phosphate is a substrate of GALTProteinHuman-GEM MAR04131Inferred only

Show the remaining 1

alpha-D-galactose 1-phosphate is a substrate of IMPA1ProteinRhea RHEA:29315Inferred only

Reactions

12 reactions

ATP+alpha-D-galactoseADP+alpha-D-galactose 1-phosphate+proton
Catalysed by GALK1 or GALK2
Reaction pageLeft to rightBalancedEC 2.7.1.6cytosol
Human-GEM MAR04130CC BY 4.0Reference data
MAM01967c+CHEBI:67119alpha-D-galactose 1-phosphate+MAM03108c
Catalysed by GALT
Reaction pageReversibleBalancedEC 2.7.7.12cytosol
Human-GEM MAR04131CC BY 4.0Reference data
alpha-D-galactose 1-phosphate+proton+UTPdiphosphate(3-)+CHEBI:67119
Catalysed by GALT
Reaction pageLeft to rightBalancedEC 2.7.7.12cytosol
Human-GEM MAR08767CC BY 4.0Reference data
alpha-D-galactose+ATP(4-)alpha-D-galactose 1-phosphate+ADP(3-)+hydron
Catalysed by GALK1
Reaction pageLeft to rightBalanced
Rhea RHEA:13553CC BY 4.0Reference data
alpha-D-galactose 1-phosphate+UDP-alpha-D-glucosealpha-D-glucose 1-phosphate+UDP-alpha-D-galactose
Catalysed by GALT
Reaction pageDirection not assertedBalanced
Rhea RHEA:13989CC BY 4.0Reference data
alpha-D-galactose 1-phosphate+UTP+hydronUDP-alpha-D-galactose+diphosphate(3-)
Reaction pageDirection not assertedBalanced
Rhea RHEA:14209CC BY 4.0Reference data
alpha-D-galactose 1-phosphate+dTTP+hydronCHEBI:57275+diphosphate(3-)
Reaction pageDirection not assertedBalanced
Rhea RHEA:17165CC BY 4.0Reference data
CHEBI:27707+hydrogenphosphatealpha-D-galactose 1-phosphate+N-acetyl-D-glucosamine
Reaction pageDirection not assertedBalanced
Rhea RHEA:20285CC BY 4.0Reference data
CHEBI:55332+hydrogenphosphatealpha-D-galactose 1-phosphate+CHEBI:62346
Reaction pageDirection not assertedBalanced
Rhea RHEA:26474CC BY 4.0Reference data
alpha-D-galactose 1-phosphate+waterD-galactose+hydrogenphosphate
Catalysed by IMPA1
Reaction pageLeft to rightBalanced
Rhea RHEA:29315CC BY 4.0Reference data
UDP-alpha-D-glucose+wateralpha-D-galactose 1-phosphate+UMP+2hydron
Reaction pageDirection not assertedBalanced
Rhea RHEA:29551CC BY 4.0Reference data
UDP-alpha-D-galactose+wateralpha-D-galactose 1-phosphate+UMP+2hydron
Catalysed by NUDT22
Reaction pageLeft to rightBalanced
Rhea RHEA:86579CC BY 4.0Reference data

Other names

7 names

Resolves to: alpha-D-galactose 1-phosphate

Also called: 1-O-phosphonato-alpha-D-galactopyranose1-O-phosphonato-α-D-galactopyranosealpha-D-galactose 1-phosphate dianionα-D-galactose 1-phosphateα-D-galactose 1-phosphate dianion
Systematic name: alpha-D-galactopyranose 1-phosphateα-D-galactopyranose 1-phosphate