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In enzymology, a L-arabinokinase (EC is an enzyme that catalyzes the chemical reaction

ATP + L-arabinose ADP + beta-L-arabinose 1-phosphate

Thus, the two substrates of this enzyme are ATP and L-arabinose, whereas its two products are ADP and beta-L-arabinose 1-phosphate.

This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing groups (phosphotransferases) with an alcohol group as acceptor. The systematic name of this enzyme class is ATP:L-arabinose 1-phosphotransferase. This enzyme is also called L-arabinokinase (phosphorylating). This enzyme participates in nucleotide sugars metabolism.


  • IUBMB entry for
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  • Neufeld EF, Feingold DS and Hassid WZ (1960). "Phosphorylation of D-galactose and L-arabinose by extracts from Phaseolus aureus seedlings". J. Biol. Chem. 235: 906&ndash, 909.

External links

The CAS registry number for this enzyme class is 37277-99-9.

Gene Ontology (GO) codes