Cloned (Comment) | Organism |
---|---|
expression in Saccharomyces cerevisiae | Homo sapiens |
Protein Variants | Comment | Organism |
---|---|---|
additional information | removal of the N-terminal forkhead associated domain does not alter activity with substrates AMPNH2 and Ap4A | Homo sapiens |
V263G | mutation identified in a AOA1 patient, mutant protein is unable to bind DNA | Homo sapiens |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
Duplex DNA | significantly reduces catalytic catalytic activity on the model histidine triad nucleotide-binding protein substrate, AMPNH2, and the Fragile histidine triad protein substrate, Ap4A | Homo sapiens | |
single-strand DNA | reduces catalytic catalytic activity on the model histidine triad nucleotide-binding protein substrate, AMPNH2, and the Fragile histidine triad protein substrate, Ap4A | Homo sapiens |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.018 | - |
P1,P4-bis(5'-adenosyl)tetraphosphate | pH 7.0, 30°C | Homo sapiens | |
0.837 | - |
adenosine-5'-monophosphoramidate | pH 7.0, 30°C | Homo sapiens |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Homo sapiens | Q7Z2E3 | - |
- |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
adenosine-5'-monophosphoramidate + H2O | - |
Homo sapiens | AMP + NH3 | - |
? | |
ATP + H2O | - |
Homo sapiens | AMP + diphosphate | - |
? | |
additional information | aprataxin hydrolyzes with similar efficiency the model histidine triad nucleotide-binding protein substrate : adenosine-5'-monophosphoramidate, AMPNH2, and the Fragile histidine triad protein substrate, Ap4A. No substrate: dATP | Homo sapiens | ? | - |
? | |
P1,P4-bis(5'-adenosyl)tetraphosphate + H2O | - |
Homo sapiens | AMP + ATP | - |
? |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.0115 | - |
P1,P4-bis(5'-adenosyl)tetraphosphate | pH 7.0, 30°C | Homo sapiens | |
0.0195 | - |
adenosine-5'-monophosphoramidate | pH 7.0, 30°C | Homo sapiens |
General Information | Comment | Organism |
---|---|---|
physiological function | aprataxin has dual DNA binding and nucleotide hydrolase activities. The protein binds to double-stranded DNA with high affinity but is also capable of binding double-stranded RNA and single-strand DNA, with increased affinity for hairpin structures. The DNA binding is not dependent on zinc | Homo sapiens |