Inhibitors | Comment | Organism | Structure |
---|---|---|---|
2-mercaptoethanol | slightly inhibitory | Oreochromis niloticus | |
Co2+ | - |
Oreochromis niloticus | |
coenzyme A | - |
Oreochromis niloticus | |
Cu2+ | complete inhibition | Oreochromis niloticus | |
dithiothreitol | - |
Oreochromis niloticus | |
Hg2+ | strong inhibition | Oreochromis niloticus | |
hydroxylamine | slightly inhibitory | Oreochromis niloticus | |
additional information | no inhibition by EDTA, Cd2+, Mg2+, Mn2+, Sr2+, Ca2+, Pb2+ | Oreochromis niloticus | |
N-ethylmaleimide | - |
Oreochromis niloticus | |
N-ethylmorpholine-HCl buffer | slightly inhibitory | Oreochromis niloticus | |
Ni2+ | strong inhibition | Oreochromis niloticus | |
o-phenanthroline | slightly inhibitory | Oreochromis niloticus | |
p-chloromercuribenzoate | strong inhibition | Oreochromis niloticus | |
Tris-HCl buffer | slightly inhibitory | Oreochromis niloticus | |
Zn2+ | - |
Oreochromis niloticus |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.027 | - |
acetylcoenzyme A | - |
Oreochromis niloticus | |
0.45 | - |
L-histidine | - |
Oreochromis niloticus |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Fe2+ | stimulates | Oreochromis niloticus | |
additional information | no divalent metal ions required | Oreochromis niloticus |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
38500 | - |
1 * 38500, SDS-PAGE | Oreochromis niloticus |
39000 | - |
gel filtration | Oreochromis niloticus |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
acetyl-CoA + L-histidine | Oreochromis niloticus | - |
CoA + N-acetyl-L-histidine | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Oreochromis niloticus | - |
Nile tilapia | - |
Purification (Comment) | Organism |
---|---|
partial | Oreochromis niloticus |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
brain | - |
Oreochromis niloticus | - |
lens | - |
Oreochromis niloticus | - |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
additional information | - |
tissue distribution | Oreochromis niloticus |
4.3 | - |
partially purified enzyme | Oreochromis niloticus |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
acetyl-CoA + 1-methyl-L-histidine | 23% activity compared to that with L-histidine | Oreochromis niloticus | CoA + 1-methyl-N-acetyl-L-histidine | - |
? | |
acetyl-CoA + 3-methyl-L-histidine | 71% activity compared to that with L-histidine | Oreochromis niloticus | CoA + 3-methyl-N-acetyl-L-histidine | - |
? | |
acetyl-CoA + L-histidine | - |
Oreochromis niloticus | CoA + N-acetyl-L-histidine | - |
? | |
acetyl-CoA + L-histidine | strictly specific for the substrates | Oreochromis niloticus | CoA + N-acetyl-L-histidine | - |
? |
Subunits | Comment | Organism |
---|---|---|
monomer | 1 * 38500, SDS-PAGE | Oreochromis niloticus |
Synonyms | Comment | Organism |
---|---|---|
HISAT | - |
Oreochromis niloticus |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
37 | - |
- |
Oreochromis niloticus |
Temperature Minimum [°C] | Temperature Maximum [°C] | Comment | Organism |
---|---|---|---|
37 | 50 | 37°C: optimum, 50°C: less than 10% activity | Oreochromis niloticus |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7 | 9.5 | broad optimum, assay at pH 7.8 | Oreochromis niloticus |