MetaCyc Enzyme: dihydroxyacetone kinase

Gene: dhaK Accession Number: G-3542 (MetaCyc)

Species: Citrobacter freundii

Subunit composition of dihydroxyacetone kinase = [DhaK]2
         dihydroxyacetone kinase subunit = DhaK

Molecular Weight of Polypeptide: 57 kD (experimental) [Daniel95]

Molecular Weight of Multimer: 105 kD (experimental) [Daniel95]

Unification Links: ModBase:P45510, Protein Model Portal:P45510, SMR:P45510, Swiss-Model:P45510, UniProt:P45510

Relationship Links: Entrez-Nucleotide:RELATED-TO:U09771, InterPro:IN-FAMILY:IPR004006, InterPro:IN-FAMILY:IPR004007, InterPro:IN-FAMILY:IPR012734, PDB:Structure:1UN8, PDB:Structure:1UN9, Pfam:IN-FAMILY:PF02733, Pfam:IN-FAMILY:PF02734, Prosite:IN-FAMILY:PS51480, Prosite:IN-FAMILY:PS51481

Gene-Reaction Schematic

Gene-Reaction Schematic

MultiFun Terms: metabolismcentral intermediary metabolismmisc. glycerol metabolism

Enzymatic reaction of: dihydroxyacetone kinase

Inferred from experiment

EC Number:

dihydroxyacetone + ATP → glycerone phosphate + ADP + H+

The direction shown, i.e. which substrates are on the left and right sides, is in accordance with the direction of enzyme catalysis.

The reaction is irreversible in the direction shown.

In Pathways: superpathway of glycerol degradation to 1,3-propanediol, glycerol degradation II

Activators (Allosteric): Mg2+ [Daniel95], Ca2+ [Daniel95]Kinetic Parameters:
Substrate Km (μM) Citations
dihydroxyacetone 30.0 [Daniel95]
ATP 70.0 [Daniel95]


Daniel95: Daniel R, Stuertz K, Gottschalk G (1995). "Biochemical and molecular characterization of the oxidative branch of glycerol utilization by Citrobacter freundii." J Bacteriol 177(15);4392-401. PMID: 7635824

Report Errors or Provide Feedback
Please cite the following article in publications resulting from the use of MetaCyc: Caspi et al, Nucleic Acids Research 42:D459-D471 2014
Page generated by SRI International Pathway Tools version 19.5 on Sun Nov 29, 2015, BIOCYC13A.