In
enzymology, a
deoxynucleoside kinase () is an
enzyme that
catalyzes the
chemical reaction :ATP + 2'-deoxynucleoside \rightleftharpoons ADP + 2'-deoxynucleoside 5'-phosphate Thus, the two
substrates of this enzyme are
ATP and
2'-deoxynucleoside, whereas its two
products are
ADP and
2'-deoxynucleoside 5'-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:deoxynucleoside 5'-phosphotransferase
. Other names in common use include multispecific deoxynucleoside kinase
, ms-dNK
, multisubstrate deoxyribonucleoside kinase
, multifunctional deoxynucleoside kinase
, D. melanogaster deoxynucleoside kinase
, and Dm-dNK'''. ==Structural studies==