Crystallization (Comment) | Organism |
---|---|
- |
Methanocaldococcus fervens |
Protein Variants | Comment | Organism |
---|---|---|
E21Q | mutation causes a 3fold decrease in kcat(app) and a slight increase in KM(glutamate). The apparent second-order constants kcat/KM is comparable to the wild type | Methanocaldococcus fervens |
R251A | mutation causes a 100fold decrease in kcat(app) and a more than 20fold increase in KM(glutamate), indicating that it plays an important role in catalysis | Methanocaldococcus fervens |
T253V | mutation causes a 3fold decrease in kcat(app). The apparent second-order constants kcat/KM is comparable to the wild type | Methanocaldococcus fervens |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.6 | - |
tyramine | pH 6.7, 70°C, mutant enzyme T253V | Methanocaldococcus fervens | |
0.8 | - |
tyramine | pH 6.7, 70°C, mutant enzyme R251A | Methanocaldococcus fervens | |
0.8 | - |
tyramine | pH 6.7, 70°C, wild-type enzyme | Methanocaldococcus fervens | |
1.1 | - |
tyramine | pH 6.7, 70°C, mutant enzyme E21Q | Methanocaldococcus fervens | |
1.5 | - |
ATP | pH 6.7, 70°C, wild-type enzyme | Methanocaldococcus fervens | |
2 | - |
ATP | pH 6.7, 70°C, mutant enzyme E21Q | Methanocaldococcus fervens | |
2.3 | - |
L-glutamate | pH 6.7, 70°C, wild-type enzyme | Methanocaldococcus fervens | |
2.5 | - |
ATP | pH 6.7, 70°C, mutant enzyme T253V | Methanocaldococcus fervens | |
3 | - |
ATP | pH 6.7, 70°C, mutant enzyme R251A | Methanocaldococcus fervens | |
3.6 | - |
L-glutamate | pH 6.7, 70°C, mutant enzyme T253V | Methanocaldococcus fervens | |
7.3 | - |
L-glutamate | pH 6.7, 70°C, mutant enzyme E21Q | Methanocaldococcus fervens |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Co2+ | the enzyme requires a divalent cation for activity. Maximum activity (100%) is observed with the addition of 10 mM Mn2+, followed by 89%, 56%, 46%, and 46% of relative activity by addition of 10 mM Mg2+, Co2+, Zn2+, and Fe2+, respectively. Less than 5% relative activities are observed when 10 mM Ni2+ or Ca2+ is added. However, no activity is detected by addition of Cu2+ or K+ | Methanocaldococcus fervens | |
Fe2+ | the enzyme requires a divalent cation for activity. Maximum activity (100%) is observed with the addition of 10 mM Mn2+, followed by 89%, 56%, 46%, and 46% of relative activity by addition of 10 mM Mg2+, Co2+, Zn2+, and Fe2+, respectively. Less than 5% relative activities are observed when 10 mM Ni2+ or Ca2+ is added. However, no activity is detected by addition of Cu2+ or K+ | Methanocaldococcus fervens | |
Mg2+ | the enzyme requires a divalent cation for activity. Maximum activity (100%) is observed with the addition of 10 mM Mn2+, followed by 89%, 56%, 46%, and 46% of relative activity by addition of 10 mM Mg2+, Co2+, Zn2+, and Fe2+, respectively. Less than 5% relative activities are observed when 10 mM Ni2+ or Ca2+ is added. However, no activity is detected by addition of Cu2+ or K+ | Methanocaldococcus fervens | |
Mn2+ | the enzyme requires a divalent cation for activity. Maximum activity (100%) is observed with the addition of 10 mM Mn2+, followed by 89%, 56%, 46%, and 46% of relative activity by addition of 10 mM Mg2+, Co2+, Zn2+, and Fe2+, respectively. Less than 5% relative activities are observed when 10 mM Ni2+ or Ca2+ is added. However, no activity is detected by addition of Cu2+ or K+ | Methanocaldococcus fervens | |
Zn2+ | the enzyme requires a divalent cation for activity. Maximum activity (100%) is observed with the addition of 10 mM Mn2+, followed by 89%, 56%, 46%, and 46% of relative activity by addition of 10 mM Mg2+, Co2+, Zn2+, and Fe2+, respectively. Less than 5% relative activities are observed when 10 mM Ni2+ or Ca2+ is added. However, no activity is detected by addition of Cu2+ or K+ | Methanocaldococcus fervens |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
33000 | - |
x * 33000, SDS-PAGE | Methanocaldococcus fervens |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + tyramine + L-glutamate | Methanocaldococcus fervens | the enzyme participates in the biosynthesis of methanofuran, a coenzymes involved in the reduction of carbon dioxide to methane | ADP + phosphate + gamma-glutamyltyramine | - |
? | |
ATP + tyramine + L-glutamate | Methanocaldococcus fervens DSM 4213 | the enzyme participates in the biosynthesis of methanofuran, a coenzymes involved in the reduction of carbon dioxide to methane | ADP + phosphate + gamma-glutamyltyramine | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Methanocaldococcus fervens | C7P8V7 | - |
- |
Methanocaldococcus fervens DSM 4213 | C7P8V7 | - |
- |
Purification (Comment) | Organism |
---|---|
expression in Escherichia coli | Methanocaldococcus fervens |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + tyramine + L-glutamate | the enzyme participates in the biosynthesis of methanofuran, a coenzymes involved in the reduction of carbon dioxide to methane | Methanocaldococcus fervens | ADP + phosphate + gamma-glutamyltyramine | - |
? | |
ATP + tyramine + L-glutamate | maximum activity with ATP (100%). Activities with UTP (<0.2%), CTP (<0.08%), and GTP (<0.04%) are much lower. Reactions using tyrosine or phenylalanine instead of tyramine show none of the expected products. Enzymatic reactions including gamma-glutamylglutamate, pyroglutamate, or N-acetyl-glutamate instead of L-glutamate show no expected products. No activity with furyltyramine as substrate. Arg251 is an important residue for both catalysis and glutamate binding | Methanocaldococcus fervens | ADP + phosphate + gamma-glutamyltyramine | - |
? | |
ATP + tyramine + L-glutamate | the enzyme participates in the biosynthesis of methanofuran, a coenzymes involved in the reduction of carbon dioxide to methane | Methanocaldococcus fervens DSM 4213 | ADP + phosphate + gamma-glutamyltyramine | - |
? | |
ATP + tyramine + L-glutamate | maximum activity with ATP (100%). Activities with UTP (<0.2%), CTP (<0.08%), and GTP (<0.04%) are much lower. Reactions using tyrosine or phenylalanine instead of tyramine show none of the expected products. Enzymatic reactions including gamma-glutamylglutamate, pyroglutamate, or N-acetyl-glutamate instead of L-glutamate show no expected products. No activity with furyltyramine as substrate. Arg251 is an important residue for both catalysis and glutamate binding | Methanocaldococcus fervens DSM 4213 | ADP + phosphate + gamma-glutamyltyramine | - |
? |
Subunits | Comment | Organism |
---|---|---|
? | x * 33000, SDS-PAGE | Methanocaldococcus fervens |
Synonyms | Comment | Organism |
---|---|---|
Mefer_1180 | - |
Methanocaldococcus fervens |
mfnD | - |
Methanocaldococcus fervens |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
70 | - |
assay at | Methanocaldococcus fervens |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
80 | - |
wild-type MfnD and its three variants (E21Q, R251A and T253V). No protein aggregation and precipitation is observed when proteins are incubated for 10 min at 80 °C in 25 mM Tricine/CAPS/TES buffer at pH 10.5 | Methanocaldococcus fervens |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.05 | - |
tyramine | pH 6.7, 70°C, mutant enzyme R251A | Methanocaldococcus fervens | |
0.07 | - |
ATP | pH 6.7, 70°C, mutant enzyme R251A | Methanocaldococcus fervens | |
1.3 | - |
L-glutamate | pH 6.7, 70°C, mutant enzyme T253V | Methanocaldococcus fervens | |
1.4 | - |
ATP | pH 6.7, 70°C, mutant enzyme T253V | Methanocaldococcus fervens | |
1.4 | - |
tyramine | pH 6.7, 70°C, mutant enzyme T253V | Methanocaldococcus fervens | |
1.7 | - |
tyramine | pH 6.7, 70°C, mutant enzyme E21Q | Methanocaldococcus fervens | |
2.1 | - |
ATP | pH 6.7, 70°C, mutant enzyme E21Q | Methanocaldococcus fervens | |
2.7 | - |
L-glutamate | pH 6.7, 70°C, mutant enzyme E21Q | Methanocaldococcus fervens | |
4.8 | - |
tyramine | pH 6.7, 70°C, wild-type enzyme | Methanocaldococcus fervens | |
5.8 | - |
L-glutamate | pH 6.7, 70°C, wild-type enzyme | Methanocaldococcus fervens | |
5.9 | - |
ATP | pH 6.7, 70°C, wild-type enzyme | Methanocaldococcus fervens |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
6.7 | - |
broad pH optimum with a maximum around pH 6.7 | Methanocaldococcus fervens |
pH Minimum | pH Maximum | Comment | Organism |
---|---|---|---|
6.3 | 10.5 | pH 6.3: about 80% of maximal activity, pH 10.5: about 60% of maximal activity | Methanocaldococcus fervens |
General Information | Comment | Organism |
---|---|---|
physiological function | the enzyme participates in the biosynthesis of methanofuran, a coenzymes involved in the reduction of carbon dioxide to methane | Methanocaldococcus fervens |
kcat/KM Value [1/mMs-1] | kcat/KM Value Maximum [1/mMs-1] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.02 | - |
ATP | pH 6.7, 70°C, mutant enzyme R251A | Methanocaldococcus fervens | |
0.06 | - |
tyramine | pH 6.7, 70°C, mutant enzyme R251A | Methanocaldococcus fervens | |
0.36 | - |
L-glutamate | pH 6.7, 70°C, mutant enzyme T253V | Methanocaldococcus fervens | |
0.37 | - |
L-glutamate | pH 6.7, 70°C, mutant enzyme E21Q | Methanocaldococcus fervens | |
0.56 | - |
ATP | pH 6.7, 70°C, mutant enzyme T253V | Methanocaldococcus fervens | |
1.1 | - |
ATP | pH 6.7, 70°C, mutant enzyme E21Q | Methanocaldococcus fervens | |
1.7 | - |
tyramine | pH 6.7, 70°C, mutant enzyme E21Q | Methanocaldococcus fervens | |
2.3 | - |
tyramine | pH 6.7, 70°C, mutant enzyme T253V | Methanocaldococcus fervens | |
2.5 | - |
L-glutamate | pH 6.7, 70°C, wild-type enzyme | Methanocaldococcus fervens | |
3.9 | - |
ATP | pH 6.7, 70°C, wild-type enzyme | Methanocaldococcus fervens | |
6 | - |
tyramine | pH 6.7, 70°C, wild-type enzyme | Methanocaldococcus fervens |