Cloned (Comment) | Organism |
---|---|
high level of expression of of proteolysis-resistant mutant R188I in Escherichia coli | Severe acute respiratory syndrome-related coronavirus |
Protein Variants | Comment | Organism |
---|---|---|
R188I | replacing Arg with Ile at position 188 renders the protease resistant to proteolysis. The catalytic ability of 3CL-R188I protease was found to be extreme as compared to that of a mature 3CL protease containing a C-terminal His tag. The kcat values is 0.0203 per sec for mature 3CL protease and 4753 per sec for the 3CL-R188I | Severe acute respiratory syndrome-related coronavirus |
General Stability | Organism |
---|---|
replacing Arg with Ile at position 188 renders the protease resistant to proteolysis | Severe acute respiratory syndrome-related coronavirus |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
acetyl-Ala-Val-Leu-NHCH(CH2CH2CON(CH3)2)-CHO | - |
Severe acute respiratory syndrome-related coronavirus | |
acetyl-Ser-Ala-Val-Leu-NHCH(CH2CH2CON(CH3)2)-CHO | - |
Severe acute respiratory syndrome-related coronavirus | |
acetyl-Thr-Ser-Ala-Val-Leu-NHCH(CH2CH2CON(CH3)2)-CHO | - |
Severe acute respiratory syndrome-related coronavirus | |
acetyl-Val-Leu-NHCH(CH2CH2CON(CH3)2)-CHO | - |
Severe acute respiratory syndrome-related coronavirus |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.0338 | - |
TSAVLQSGFRK-NH2 | pH 7.5, 37°C, mutant enzyme R188I | Severe acute respiratory syndrome-related coronavirus | |
0.046 | - |
GPFVDRQTAQAAGTDT-NH2 | pH 7.5, 37°C, mutant enzyme R188I | Severe acute respiratory syndrome-related coronavirus | |
0.051 | - |
KVATVQSKMSD-NH2 | pH 7.5, 37°C, mutant enzyme R188I | Severe acute respiratory syndrome-related coronavirus |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | Severe acute respiratory syndrome-related coronavirus | the genomic RNA produces two large proteins with overlapping sequences, polyproteins 1a and 1ab, which are autocatalytically cleaved by two or three viral proteases to yield functional polypeptides. The key enzyme in this processing is SARS 3CL protease | ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Severe acute respiratory syndrome-related coronavirus | - |
- |
- |
Purification (Comment) | Organism |
---|---|
purification of proteolysis-resistant mutant R188I of the SARS 3CL protease | Severe acute respiratory syndrome-related coronavirus |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
GPFVDRQTAQAAGTDT-NH2 + H2O | 1% of the activity with TSAVLQSGFRK-NH2 | Severe acute respiratory syndrome-related coronavirus | ? | - |
? | |
KVATVQSKMSD-NH2 | undecapeptide containing the non-canonical P3/P4 cleavage site of 3CL protease, 6% of the activity with TSAVLQSGFRK-NH2 | Severe acute respiratory syndrome-related coronavirus | ? | - |
? | |
additional information | the genomic RNA produces two large proteins with overlapping sequences, polyproteins 1a and 1ab, which are autocatalytically cleaved by two or three viral proteases to yield functional polypeptides. The key enzyme in this processing is SARS 3CL protease | Severe acute respiratory syndrome-related coronavirus | ? | - |
? | |
TSAVLQSGFRK-NH2 + H2O | peptide containing the P1/P2 cleavage site, the N-terminal self-cleavage site of the protease, most suitable substrate | Severe acute respiratory syndrome-related coronavirus | TSAVLQ + SGFRK-NH2 | - |
? |
Synonyms | Comment | Organism |
---|---|---|
SARS 3CL protease | - |
Severe acute respiratory syndrome-related coronavirus |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
76 | - |
GPFVDRQTAQAAGTDT-NH2 | pH 7.5, 37°C, mutant enzyme R188I | Severe acute respiratory syndrome-related coronavirus | |
455 | - |
KVATVQSKMSD-NH2 | pH 7.5, 37°C, mutant enzyme R188I | Severe acute respiratory syndrome-related coronavirus | |
4753 | - |
TSAVLQSGFRK-NH2 | pH 7.5, 37°C, mutant enzyme R188I | Severe acute respiratory syndrome-related coronavirus |
Organism | Comment | pI Value Maximum | pI Value |
---|---|---|---|
Severe acute respiratory syndrome-related coronavirus | mutant enzyme R188I, calculated from sequence | - |
6.24 |
IC50 Value | IC50 Value Maximum | Comment | Organism | Inhibitor | Structure |
---|---|---|---|---|---|
0.026 | - |
- |
Severe acute respiratory syndrome-related coronavirus | acetyl-Thr-Ser-Ala-Val-Leu-NHCH(CH2CH2CON(CH3)2)-CHO | |
0.037 | - |
- |
Severe acute respiratory syndrome-related coronavirus | acetyl-Ser-Ala-Val-Leu-NHCH(CH2CH2CON(CH3)2)-CHO | |
0.155 | - |
- |
Severe acute respiratory syndrome-related coronavirus | acetyl-Ala-Val-Leu-NHCH(CH2CH2CON(CH3)2)-CHO | |
6 | - |
- |
Severe acute respiratory syndrome-related coronavirus | acetyl-Val-Leu-NHCH(CH2CH2CON(CH3)2)-CHO |