Cloned (Comment) | Organism |
---|---|
expression of wild-type and mutant L250S enzymes in Escherichia coli with similar expression levels, the mutant enzyme is poorly soluble | Homo sapiens |
Protein Variants | Comment | Organism |
---|---|---|
L250S | naturally occurring mutation in a patient with mitochondrial DNA depletion syndrome, patient shows rapidly progressing, early onset fatal liver failure associated with profoundly decreased mtDNA levels in liver and, to a lesser extent, in skeletal muscle, mutation is introduced into the enzyme cDNA via site-directed mutagenesis, the mutant enzyme shows 0.5% remaining activity compared to the wild-type enzyme | Homo sapiens |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
additional information | - |
additional information | reaction of the mutant L250S with 2'-deoxyguanosine follows Michaelis-Menten kinetics, while the reaction with 2'-deoxyadenosine shows biphasic kinetics | Homo sapiens | |
0.004 | - |
2'-deoxyguanosine | pH 7.6, wild-type enzyme | Homo sapiens | |
0.0085 | - |
ATP | pH 7.6, wild-type enzyme, with 2'-deoxyguanosine | Homo sapiens | |
0.023 | - |
2'-deoxyguanosine | pH 7.6, mutant L250S | Homo sapiens | |
0.034 | - |
ATP | pH 7.6, mutant L250S, with 2'-deoxyguanosine | Homo sapiens | |
0.269 | - |
ATP | pH 7.6, wild-type enzyme, with 2'-deoxyadenosine | Homo sapiens | |
0.302 | - |
ATP | pH 7.6, mutant L250S, with 2'-deoxyadenosine | Homo sapiens | |
0.467 | - |
2'-deoxyadenosine | pH 7.6, wild-type enzyme | Homo sapiens | |
0.5 | - |
2'-deoxyadenosine | pH 7.6, mutant L250S | Homo sapiens |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
mitochondrion | - |
Homo sapiens | 5739 | - |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Mg2+ | - |
Homo sapiens |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + 2'-deoxyadenosine | Homo sapiens | key enzyme in mitochondrial DNA precursor synthesis | ADP + 2'-deoxyadenosine 5'-phosphate | - |
? | |
ATP + 2'-deoxyguanosine | Homo sapiens | key enzyme in mitochondrial DNA precursor synthesis | ADP + 2'-deoxyguanosine 5'-phosphate | - |
? | |
additional information | Homo sapiens | enzyme defect due to genetic alterations leads to tissue-specific mitochondrial DNA depletion causing multi-systemic disease or devastating liver disease | ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Homo sapiens | - |
patient with mitochondrial DNA depletion syndrome | - |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
liver | - |
Homo sapiens | - |
skeletal muscle | - |
Homo sapiens | - |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
additional information | - |
catalytic efficiencies, wild-type and mutant enzymes | Homo sapiens |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + 2'-deoxyadenosine | - |
Homo sapiens | ADP + 2'-deoxyadenosine 5'-phosphate | - |
? | |
ATP + 2'-deoxyadenosine | key enzyme in mitochondrial DNA precursor synthesis | Homo sapiens | ADP + 2'-deoxyadenosine 5'-phosphate | - |
? | |
ATP + 2'-deoxyguanosine | - |
Homo sapiens | ADP + 2'-deoxyguanosine 5'-phosphate | - |
? | |
ATP + 2'-deoxyguanosine | key enzyme in mitochondrial DNA precursor synthesis | Homo sapiens | ADP + 2'-deoxyguanosine 5'-phosphate | - |
? | |
additional information | enzyme defect due to genetic alterations leads to tissue-specific mitochondrial DNA depletion causing multi-systemic disease or devastating liver disease | Homo sapiens | ? | - |
? |
Synonyms | Comment | Organism |
---|---|---|
DGK | - |
Homo sapiens |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7.6 | - |
assay at | Homo sapiens |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
ATP | - |
Homo sapiens |