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{{enzyme
| Name = xylitol kinase
| EC_number = 2.7.1.122
| CAS_number = 91273-86-8
| IUBMB_EC_number = 2/7/1/122
| GO_code = 0050400
| image = 
| width = 
| caption = 
}}
In [[enzymology]], a '''xylitol kinase''' ({{EC number|2.7.1.122}}) is an [[enzyme]] that [[catalysis|catalyzes]] the [[chemical reaction]]

:ATP + xylitol <math>\rightleftharpoons</math> ADP + xylitol 5-phosphate

Thus, the two [[substrate (biochemistry)|substrates]] of this enzyme are [[adenosine triphosphate|ATP]] and [[xylitol]], whereas its two [[product (chemistry)|products]] are [[adenosine diphosphate|ADP]] and [[xylitol 5-phosphate]].

This enzyme belongs to the family of [[transferase]]s, specifically those transferring phosphorus-containing groups ([[phosphotransferase]]s) with an alcohol group as acceptor.  The systematic name of this enzyme class is '''ATP:xylitol 5-phosphotransferase'''. 

==References==
{{reflist|1}}
* {{cite journal | author = Assev S, Rolla G | date = 1984 | title = Evidence for presence of a xylitol phosphotransferase system in Streptococcus mutans OMZ 176 | journal = Acta. Pathol. Microbiol. Immunol. Scand. [B].  | volume = 92 | pages = 89&ndash;92  | pmid = 6730972 | issue = 2 }}

{{enzyme-stub}}

[[Category:EC 2.7.1]]
[[Category:Enzymes of unknown structure]]