View source for Ribose 1,5-bisphosphate phosphokinase

{{infobox enzyme
| Name       = Ribose 1,5-bisphosphate phosphokinase
| EC_number  = 2.7.4.23
| CAS_number =
| GO_code    = 
| image      = 
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}}

In [[enzymology]], a '''ribose 1,5-bisphosphate phosphokinase''' ({{EC number|2.7.4.23}}) is an [[enzyme]] that [[catalysis|catalyzes]] the [[chemical reaction]]

:ATP + ribose 1,5-bisphosphate <math>\rightleftharpoons</math> ADP + 5-phospho-alpha-D-ribose 1-diphosphate

Thus, the two [[substrate (biochemistry)|substrates]] of this enzyme are [[adenosine triphosphate|ATP]] and [[ribose 1,5-bisphosphate]], whereas its two [[product (chemistry)|products]] are [[adenosine diphosphate|ADP]] and [[5-phospho-alpha-D-ribose 1-diphosphate]].

This enzyme belongs to the family of [[transferase]]s, specifically those transferring phosphorus-containing groups ([[phosphotransferase]]s) with a phosphate group as acceptor.  The [[List of enzymes|systematic name]] of this enzyme class is '''ATP:ribose-1,5-bisphosphate phosphotransferase'''. Other names in common use include '''ribose 1,5-bisphosphokinase''', and '''PhnN'''.  This enzyme participates in [[pentose phosphate pathway]].

==References==
{{reflist|1}}
* {{cite journal | vauthors = Hove-Jensen B, Rosenkrantz TJ, Haldimann A, Wanner BL | date = 2003 | title = Escherichia coli phnN, encoding ribose 1,5-bisphosphokinase activity (phosphoribosyl diphosphate forming): dual role in phosphonate degradation and NAD biosynthesis pathways | journal = J. Bacteriol.  | volume = 185 | pages = 2793&ndash;801  | pmid = 12700258 | doi = 10.1128/JB.185.9.2793-2801.2003 | issue = 9 | pmc = 154390 }}

{{Kinases}}
{{Enzymes}}
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[[Category:EC 2.7.4]]
[[Category:Enzymes of unknown structure]]


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