View source for Nicotinate-nucleotide adenylyltransferase

{{enzyme
| Name = opheline kinase
| EC_number = 2.7.3.7
| CAS_number = 37278-15-2
| IUBMB_EC_number = 2/7/3/7
| GO_code = 0050154
| image = 
| width = 
| caption = 
}}
In [[enzymology]], an '''opheline kinase''' ({{EC number|2.7.3.7}}) is an [[enzyme]] that [[catalysis|catalyzes]] the [[chemical reaction]]

:ATP + guanidinoethyl methyl phosphate <math>\rightleftharpoons</math> ADP + N'-phosphoguanidinoethyl methylphosphate

Thus, the two [[substrate (biochemistry)|substrates]] of this enzyme are [[adenosine triphosphate|ATP]] and [[guanidinoethyl methyl phosphate]], whereas its two [[product (chemistry)|products]] are [[adenosine diphosphate|ADP]] and [[N'-phosphoguanidinoethyl methylphosphate]].

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

==References==
{{reflist|1}}
* {{cite journal | author = Thoai NV, di Jeso F, Robin Y and der Terrossian E | date = 1966 | title = Sur la nouvelle acide adenosine 5'-triphosphorique:guanidine phosphotransferase, l'opheline kinase | journal = Biochim. Biophys. Acta  | volume = 113 | pages = 542&ndash;550 }}

{{enzyme-stub}}

[[Category:EC 2.7.3]]
[[Category:Enzymes of unknown structure]]