Protein Variants | Comment | Organism |
---|---|---|
D175E | the mutant with reduced aminoacylation activity is associated with Charcot-Marie-Tooth disease type 2W | Homo sapiens |
D364Y | the mutant with reduced aminoacylation activity is associated with Charcot-Marie-Tooth disease type 2W | Homo sapiens |
P134H | the mutant with reduced aminoacylation activity is associated with Charcot-Marie-Tooth disease type 2W | Homo sapiens |
R137Q | the mutant with reduced aminoacylation activity is associated with Charcot-Marie-Tooth disease type 2W | Homo sapiens |
S356N | the mutant with reduced aminoacylation activity is associated with Charcot-Marie-Tooth disease type 2W | Homo sapiens |
T132I | the mutant with reduced aminoacylation activity is associated with Charcot-Marie-Tooth disease type 2W | Homo sapiens |
V155G | the mutant with reduced aminoacylation activity is associated with Charcot-Marie-Tooth disease type 2W | Homo sapiens |
Y330C | the mutant with reduced aminoacylation activity is associated with Charcot-Marie-Tooth disease type 2W | Homo sapiens |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.000199 | - |
tRNAHis | mutant enzyme S365N, at pH 7.5 and 25°C | Homo sapiens | |
0.00033 | - |
tRNAHis | mutant enzyme Y330C, at pH 7.5 and 25°C | Homo sapiens | |
0.000782 | - |
tRNAHis | wild type enzyme, at pH 7.5 and 25°C | Homo sapiens | |
0.000979 | - |
tRNAHis | mutant enzyme V155G, at pH 7.5 and 25°C | Homo sapiens | |
0.008 | - |
L-histidine | wild type enzyme, at pH 7.5 and 25°C | Homo sapiens | |
0.0108 | - |
L-histidine | mutant enzyme S365N, at pH 7.5 and 25°C | Homo sapiens | |
0.0442 | - |
ATP | wild type enzyme, at pH 7.5 and 25°C | Homo sapiens | |
0.2029 | - |
L-histidine | mutant enzyme Y330C, at pH 7.5 and 25°C | Homo sapiens | |
0.6872 | - |
L-histidine | mutant enzyme V155G, at pH 7.5 and 25°C | Homo sapiens | |
1.763 | - |
ATP | mutant enzyme Y330C, at pH 7.5 and 25°C | Homo sapiens |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + L-histidine + tRNAHis | Homo sapiens | - |
AMP + diphosphate + L-histidyl-tRNAHis | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Homo sapiens | - |
- |
- |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + L-histidine + tRNAHis | - |
Homo sapiens | AMP + diphosphate + L-histidyl-tRNAHis | - |
? |
Subunits | Comment | Organism |
---|---|---|
homodimer | 2 * 118500, sedimentation velocity analysis | Homo sapiens |
Synonyms | Comment | Organism |
---|---|---|
HARS | - |
Homo sapiens |
Histidyl-tRNA synthetase | - |
Homo sapiens |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
51.7 | - |
melting temperature | Homo sapiens |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.3 | - |
tRNAHis | mutant enzyme S365N, at pH 7.5 and 25°C | Homo sapiens | |
0.39 | - |
L-histidine | mutant enzyme S365N, at pH 7.5 and 25°C | Homo sapiens | |
0.48 | - |
ATP | mutant enzyme Y330C, at pH 7.5 and 25°C | Homo sapiens | |
0.56 | - |
tRNAHis | mutant enzyme Y330C, at pH 7.5 and 25°C | Homo sapiens | |
0.74 | - |
L-histidine | mutant enzyme Y330C, at pH 7.5 and 25°C | Homo sapiens | |
2.08 | - |
L-histidine | mutant enzyme V155G, at pH 7.5 and 25°C | Homo sapiens | |
3.05 | - |
tRNAHis | mutant enzyme V155G, at pH 7.5 and 25°C | Homo sapiens | |
4.1 | - |
L-histidine | wild type enzyme, at pH 7.5 and 25°C | Homo sapiens | |
5.4 | - |
tRNAHis | wild type enzyme, at pH 7.5 and 25°C | Homo sapiens | |
5.8 | - |
ATP | wild type enzyme, at pH 7.5 and 25°C | Homo sapiens |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
ATP | - |
Homo sapiens |
General Information | Comment | Organism |
---|---|---|
malfunction | mutations in histidyl-tRNA synthetase cause the dominant axonal peripheral neuropathy Charcot-Marie-Tooth disease type 2W | Homo sapiens |
kcat/KM Value [1/mMs-1] | kcat/KM Value Maximum [1/mMs-1] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.15 | - |
ATP | mutant enzyme S365N, at pH 7.5 and 25°C | Homo sapiens | |
0.272 | - |
ATP | mutant enzyme Y330C, at pH 7.5 and 25°C | Homo sapiens | |
0.38 | - |
ATP | mutant enzyme V155G, at pH 7.5 and 25°C | Homo sapiens | |
3 | - |
L-histidine | mutant enzyme V155G, at pH 7.5 and 25°C | Homo sapiens | |
4 | - |
L-histidine | mutant enzyme Y330C, at pH 7.5 and 25°C | Homo sapiens | |
40 | - |
L-histidine | mutant enzyme S365N, at pH 7.5 and 25°C | Homo sapiens | |
130 | - |
ATP | wild type enzyme, at pH 7.5 and 25°C | Homo sapiens | |
500 | - |
L-histidine | wild type enzyme, at pH 7.5 and 25°C | Homo sapiens | |
1500 | - |
tRNAHis | mutant enzyme S365N, at pH 7.5 and 25°C | Homo sapiens | |
1700 | - |
tRNAHis | mutant enzyme Y330C, at pH 7.5 and 25°C | Homo sapiens | |
3100 | - |
tRNAHis | mutant enzyme V155G, at pH 7.5 and 25°C | Homo sapiens | |
6900 | - |
tRNAHis | wild type enzyme, at pH 7.5 and 25°C | Homo sapiens |