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Information on EC 2.7.3.8 - ammonia kinase for references in articles please use BRENDA:EC2.7.3.8Please wait a moment until all data is loaded. This message will disappear when all data is loaded.
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The expected taxonomic range for this enzyme is: Saccharomyces cerevisiae
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ATP + NH3 = ADP + phosphoramide
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phospho group transfer
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ATP:ammonia phosphotransferase
Has a wide specificity. In the reverse direction, N-phosphoglycine and N-phosphohistidine can also act as phosphate donors, and ADP, dADP, GDP, CDP, dTDP, dCDP, IDP and UDP can act as phosphate acceptors (in decreasing order of activity).
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kinase (phosphorylating), ammonia
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kinase, ammonia (phosphorylating)
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phosphoramidate-adenosine diphosphate phosphotransferase
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phosphoramidate-ADP-phosphotransferase
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brenda
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ADP + phosphoiodohistidine
ATP + iodohistidine
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L-isomer and DL-racemate of phosphoiodohistidine
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ADP + phosphoramide
ATP + NH3
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CDP + phosphoramide
CTP + NH3
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dADP + phosphoramide
dATP + NH3
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dCDP + phosphoramide
dCTP + NH3
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GDP + phosphoramide
GTP + NH3
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IDP + phosphoramide
ITP + NH3
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TDP + phosphoramide
TTP + NH3
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UDP + phosphoramide
UTP + NH3
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Fe2+
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1.67 mM, 48% inhibition
Hg2+
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0.083 mM, 76% inhibition
iodoacetate
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1.67 mM, 12% inhibition
Mg2+
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133 mM, complete inhibition, inhibits reaction with phosphormaide or phosphoiodohistidine
Mn2+
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1.67 mM, 49% inhibition
NEM
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1.67 mM, 44% inhibition
oligomycin
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0.267 mM, 42% inhibition
p-chloromercuribenzoate
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0.83 mM, 95% inhibition
PO43-
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1.67 mM, 26% inhibition
Sodium arsenate
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1.67 mM, 65% inhibition
Sodium azide
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0.267 mM, 42% inhibition
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0.139
phosphoramide
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pH 7.2
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additional information
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6.9
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reaction with phosphoiodohistidine, double pH maximum with peaks at 6.0 and 7.8
7 - 7.2
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reaction with phosphoramide
7.8
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reaction with phosphoiodohistidine, double pH maximum with peaks at 6.0 and 7.8
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6 - 8
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pH 6.0: about 60% of maximal activity, pH 8.0: about 70% of maximal activity, reaction with phosphoramide
6.5 - 8.5
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pH 6.5: about 50% of maximal activity, pH 8.5: about 40% of maximal activity, reaction with phosphoiodohistidine
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35
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10 min, denaturation above
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Dowler, M.J.; Nakada, H.I.
Yeast phosphoramidate-adenosine diphosphate phosphotransferase
J. Biol. Chem.
243
1434-1440
1968
Saccharomyces cerevisiae
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