Erythritol kinase () is an enzyme that catalyzes the chemical reaction
The enzyme characterised from Propionibacterium pentosaceum converts the sugar alcohol, erythritol, to D-erythritol 4-phosphate, by transferring a phosphate group from the cofactor, adenosine triphosphate (ATP), which is converted to adenosine diphosphate (ADP).
This enzyme is a transferase, specifically one transferring phosphorus-containing groups (phosphotransferases) with an alcohol group as acceptor. The systematic name of this enzyme class is ATP:erythritol 4-phosphotransferase. This enzyme is also called erythritol kinase (phosphorylating).
Structural studies As of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code .
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