High-activity mutants of butyrylcholinesterase for cocaine hydrolysis and method of generating the same
US-9206403-B1 · Dec 8, 2015 · US
US2023323317A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023323317-A1 |
| Application number | US-202218091687-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 30, 2022 |
| Priority date | Mar 30, 2018 |
| Publication date | Oct 12, 2023 |
| Grant date | — |
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The present invention provides a novel hydrolase that can industrially produce optically highly pure (1S,2S)-1-alkoxycarbonyl-2-vinylcyclopropane carboxylic acid with high efficiency at low costs, and a production method using the hydrolase.
Opening claim text (preview).
What is claimed is: 1 . A hydrolase comprising a polypeptide of the following (a), (b), or (c): (a) a polypeptide consisting of an amino acid sequence resulting from the deletion, insertion, substitution and/or addition of one or plural amino acids in the amino acid sequence shown in SEQ ID NO: 4 or 6, and an activity to catalyze the reaction shown in the formula (I) wherein R is an alkyl group having 1-6 carbon atoms in the formula (1), and wherein the ratio of Syn isomer to Anti isomer in the formula (II) is equal to or less than 0.2%; (b) a polypeptide consisting of an amino acid sequence with not less than 95% of sequence identity with the amino acid sequence shown in SEQ ID NO: 4 or 6, and an activity to catalyze the reaction shown in the above-mentioned formula (1); (c) a polypeptide consisting of an amino acid sequence with not less than 90% of sequence identity with the amino acid sequence shown in SEQ ID NO: 4 or 6, wherein the aforementioned amino acid sequence comprises one or more motif sequences selected from the following motif sequences (i)-(iv): (i) a sequence consisting of 5 consecutive residues (aspartic acid (D), alanine (A), threonine (T), arginine (R), glycine (G)); (ii) a sequence consisting of 4 consecutive residues (proline (P), tyrosine (Y), glycine (G), phenylalanine (F)); (iii) a sequence consisting of 4 consecutive residues (asparagine (N), tryptophan (W), proline (P), glycine (G)); (iv) a sequence consisting of 5 consecutive residues (proline (P), glycine (G), tryptophan (W), proline (P), glycine (G)). 2 . The hydrolase according to claim 1 , wherein R in the formula (1) is an ethyl group. 3 . A nucleic acid encoding the hydrolase according to claim 1 . 4 . The nucleic acid according to claim 3 , wherein the aforementioned nucleic acid comprises a base sequence of the following (d), (e), (1), or (g): (d) the base sequence shown in SEQ ID NO: 3 or 5; (e) a nucleic acid consisting of a base sequence resulting from the substitution, deletion, and/or addition of one or plural bases in the base sequence shown in SEQ ID NO: 3 or 5, and encoding a polypeptide having an activity to catalyze the reaction shown in the formula (1) wherein R is an alkyl group having 1-6 carbon atoms in the formula (1), and wherein the ratio of Syn isomer to Anti isomer in the formula (II) is equal to or less than 0.2%; (f) a nucleic acid consisting of a base sequence having not less than 90% of sequence identity with the base sequence shown in SEQ ID NO: 3 or 5, and encoding a polypeptide having an activity to catalyze the reaction shown in the above-mentioned formula (1); (g) a nucleic acid having a base sequence that hybridizes with a complementary strand of the base sequence shown in SEQ ID NO: 3 or 5 under stringent conditions, and encoding a polypeptide having an activity to catalyze the reaction shown in the above-mentioned formula (1). 5 . A method for producing (1S,2S)-1-alkoxycarbonyl-2-vinylcyclopropane carboxylic acid, comprising bringing the hydrolase according to claim 1 , a microorganism or cell having an ability to produce the aforementioned enzyme, a treated product of the aforementioned microorganism or cell, and/or a culture solution containing the aforementioned enzyme obtained by culturing the aforementioned microorganism or cell into contact with dialkyl 2-vinylcyclopropane-1,1-dicarboxylic acid represented by the formula (1) to produce (1 S,2S)-1-alkoxycarbonyl-2-vinylcyclopropane carboxylic acid represented by the formula (II). 6 . The production method according to claim 5 , wherein R in the formula (1) is an ethyl group. 7 . The production method according to claim 5 , wherein the microorganism or cell is a microorganism or cell transformed with a nucleic acid encoding a hydrolase comprising a polypeptide of the following (a), (b), or (c): (a) a polypeptide consisting of an amino acid sequence resulting from the deletion, insertion, substitution and/or addition of one or plural amino acids in the amino acid sequence shown in SEQ ID NO: 4 or 6, and an activity to catalyze the reaction shown in the formula (1) wherein R is an alkyl group having 1-6 carbon atoms in the formula (1), and wherein the ratio of Syn isomer to Anti isomer in the formula (II) is equal to or less than 0.2%; (b) a polypeptide consisting of an amino acid sequence with not less than 60% of sequence identity with the amino acid sequence shown in SEQ ID NO: 4 or 6, and an activity to catalyze the reaction shown in the above-mentioned formula (1); (c) a polypeptide consisting of an amino acid sequence with not less than 60% of sequence identity with the amino acid sequence shown in SEQ ID NO: 4 or 6, wherein the aforementioned amino acid sequence comprises one or more motif sequences selected from the following motif sequences (i)-(iv): (i) a sequence consisting of 5 consecutive residues (aspartic acid (D)), alanine (A), threonine (T), arginine (R), glycine (G)); (ii) a sequence consisting of 4 consecutive residues (proline (P), tyrosine (Y), glycine (G), phenylalanine (F)); (iii) a sequence consisting of 4 consecutive residues (asparagine (N), tryptophan (W), proline (P), glycine (G)); (iv) a sequence consisting of 5 consecutive residues (proline (P), glycine (G), tryptophan (W), proline (P), glycine (G)). 8 . A recombinant vector comprising the nucleic acid according to claim 3 . 9 . A transformant comprising the recombinant vector according to claim 8 . 10 . The production method according to claim 5 , wherein the microorganism or cell is a microorganism or cell transformed with a nucleic acid comprising a base sequence of the following (d), (e), (f), or (g): (d) the base sequence shown in SEQ ID NO: 3 or 5; (e) a nucleic acid consisting of a base sequence resulting from the substitution, deletion, and/or addition of one or plural bases in the base sequence shown in SEQ ID NO: 3 or 5, and encoding a polypeptide having an activity to catalyze the reaction shown in the formula (1) wherein R is an alkyl group having 1-6 carbon atoms in the formula (1), and wherein the ratio of Syn isomer to Anti isomer in the formula (II) is equal to or less than 0.2%; (f) a nucleic acid consisting of a base sequence having not less than 60% of sequence identity with the base sequence shown in SEQ ID NO: 3 or 5, and encoding a polypeptide having an activity to catalyze the reaction shown in the above-mentioned formula (1); (g) a nucleic acid having a base sequence that hybridizes with a complementary strand of the base sequence shown in SEQ ID NO: 3 or 5 under stringent conditions, and encoding a polypeptide having an activity to catalyze the reaction shown in the above-mentioned formula (1). 11 . A recombinant vector comprising the nucleic acid according to claim 4 . 12 . A nucleic acid encoding the hydrolase according to claim 2 . 13 . The nucleic acid according to claim 12 , wherein the aforementioned nucleic acid comprises a base sequence of the following (d), (e), (f) or (g): (d) the base sequence shown in SEQ ID NO: 3 or 5; (e) a nucleic acid consisting of
Carboxylic ester hydrolases {(3.1.1)} · CPC title
Carboxylic acid esters · CPC title
Processes using enzymes or microorganisms to separate optical isomers from a racemic mixture · CPC title
Carboxylic ester hydrolases (3.1.1) · CPC title
by esterification of carboxylic acid groups in the enantiomers or the inverse reaction · CPC title
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