2.7.1.15: ribokinase
This is an abbreviated version!
For detailed information about ribokinase, go to the full flat file.
Word Map on EC 2.7.1.15
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2.7.1.15
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adp-dependent
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fructokinase
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glucokinases
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phosphopentomutase
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phosphofructokinase-2
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fructose-6-p
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ribose-binding
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diagnostics
- 2.7.1.15
-
adp-dependent
- fructokinase
- glucokinases
- phosphopentomutase
- phosphofructokinase-2
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fructose-6-p
-
ribose-binding
- diagnostics
Reaction
Synonyms
At1g17160, D-ribokinase, deoxyribokinase, Ms4585, rbk, RBSK, rbsK1, ribokinase, ribokinase (phosphorylating), Rv2436, Sa239
ECTree
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Metals Ions
Metals Ions on EC 2.7.1.15 - ribokinase
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Cd2+
Co2+
Cs+
Cu2+
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can replace Mg2+ in activation, optimal concentration: 10 mM, 20% of the activity with Mg2+
K+
Mg2+
Mn2+
NH4+
Ni2+
Zn2+
-
can replace Mg2+ in activation, optimal concentration: 1 mM, 27% of the activity with Mg2+
additional information
Cd2+
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can replace Mg2+ in activation, optimal concentration: 5 mM, 68% of the activity with Mg2+
Co2+
the enzyme is dependent on monovalent as well as divalent cations for its catalytic activity. When magnesium is substituted with Co2+ and Mn2+ in the reaction mixture, the ribokinase activity got reduced to 60% and 45% as compared to that with Mg2+
Co2+
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can replace Mg2+ in activation, optimal concentration: 5 mM, 87% of the activity with Mg2+
Cs+
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activity is strongly dependent on the presence of monovalent cations in the order of decreasing efficiency: K+, NH4+, Cs+
Cs+
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optimal activity obtained in presence of 0.5 M NH4+ or Cs+
K+
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activity is strongly dependent on the presence of monovalent cations in the order of decreasing efficiency: K+, NH4+, Cs+
K+
the enzyme is dependent on monovalent as well as divalent cations for its catalytic activity. Among the monovalent cations, K+ shows highest activating effect. The activity drops to 90% and 45% with Cs+ and Na+, respectively, in comparison to K+
K+
monovalent ions such as K+ are able to enhance substrate affinity of Sa239 and activate the reaction catalyzed by Sa239
Mg2+
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absolute requirement, optimal ratio of Mg2+ to ATP is 1.5 : 1, higher concentrations inhibit
Mg2+
the enzyme is dependent on monovalent as well as divalent cations for its catalytic activity. When magnesium is substituted with Co2+ and Mn2+ in the reaction mixture, the ribokinase activity got reduced to 60% and 45% as compared to that with Mg2+
Mg2+
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absolute requirement for divalent cations, best satisfied by Mg2+
Mg2+
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the change in the ratio from Mg2+ to ATP from 1 : 1 to 2 : 1 gives optimal activity
Mg2+
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the catalytic reactivity of ribokinase is activated by the divalent cation Mg2+, in the absence of these metal ions, ribokinase loses its catalytic ability
Mn2+
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cannot replace Mg2+ in the kinase reaction, 50 mM inhibit
Mn2+
the enzyme is dependent on monovalent as well as divalent cations for its catalytic activity. When magnesium is substituted with Co2+ and Mn2+ in the reaction mixture, the ribokinase activity got reduced to 60% and 45% as compared to that with Mg2+
Mn2+
-
can replace Mg2+ in activation
Mn2+
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optimal concentration 5 mM, 61% of the activity with Mg2+
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activity is strongly dependent on the presence of monovalent cations in the order of decreasing efficiency: K+, NH4+, Cs+
NH4+
-
optimal activity obtained in presence of 0.5 M NH4+ or Cs+
Ni2+
-
can replace Mg2+, optimal concentration: 25-30 mM, 31% of the activity with Mg2+
additional information
no activity in the absence of divalent metal ions
additional information
-
no activity in the absence of divalent metal ions