Hydrolases, nucleic acids encoding them and methods for making and using them
AssigneeDsm IP Assets B.V.
InventorsTim HITCHMAN, Christopher L. G. DAYTON, Katie A. KLINE, Jonathan LYON, Mark A. WALL, Nelson R. BARTON
Life of this patent
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Abstract
Provided are hydrolases, including lipases, saturases, palmitases and/or stearatases, and polynucleotides encoding them, and methods of making and using these polynucleotides and polypeptides. Further provided are polypeptides, e.g., enzymes, having a hydrolase activity, e.g., lipases, saturases, palmitases and/or stearatases and methods for preparing low saturate or low trans fat oils, such as low saturate or low trans fat animal or vegetable oils, e.g., soy or canola oils.
Claims42
An isolated, synthetic or recombinant nucleic acid comprising
- (a) a nucleic acid (polynucleotide) encoding at least one polypeptide, wherein the nucleic acid comprises a sequence having at least about 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, or more, or complete (100%) sequence identity to:
- (j) SEQ ID NO:1, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:9, SEQ ID NO:11, SEQ ID NO:13, SEQ ID NO:15, SEQ ID NO:17, or SEQ ID NO:19, or,
- (ii) the nucleic acid of SEQ ID NO:1 having one or more nucleotide changes (or the equivalent thereof) encoding one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen, twenty, twenty-one, twenty-two, twenty-three, twenty-four or more or all the amino acid changes (or the equivalent thereof) as set forth in Table 3 or Table 4,
- wherein the nucleic acid of (i) or (ii) encodes at least one polypeptide having a hydrolase activity, or encodes a polypeptide or peptide capable of generating a hydrolase specific antibody (a polypeptide or peptide that acts as an epitope or immunogen),
- (b) the nucleic acid (polynucleotide) of (a), wherein the sequence identities are determined:
- (A) by analysis with a sequence comparison algorithm or by visual inspection, or (B) over a region of at least about 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 100, 125, 150, 175, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1050, 1100, 1150, 1200, 1250, 1300, 1350, 1400, 1450, 1500, 1550 or more residues, or the full length of a cDNA, transcript (mRNA) or gene,
- (c) the nucleic acid (polypeptide) or (a) or (b), wherein, the sequence comparison algorithm is a BLAST version 2.2.2 algorithm where a filtering setting is set to blastall -p blastp -d “nr pataa”-F F, and all other options are set to default,
- (d) a nucleic acid (polynucleotide) encoding at least one polypeptide or peptide having a hydrolase activity, wherein the nucleic acid comprises a sequence that hybridizes under stringent conditions to the complement of the nucleic acid of (a), (b) or (c), wherein the stringent conditions comprise a wash step comprising a wash in 0.2×SSC at a temperature of about 65° C. for about 15 minutes,
- (e) a nucleic acid (polynucleotide) encoding at least one polypeptide having a hydrolase, e.g. a lipase, a saturase, a palmitase and/or a stearatase activity, wherein the polypeptide comprises the sequence of SEQ ID NO:2, or enzymatically active fragments thereof, having at least one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen, twenty, twenty-one, twenty-two, twenty-three, twenty-four, or more or all the amino acid changes (or the equivalent thereof) as set forth in Table 3 or Table 4,
- (f) a nucleic acid (polynucleotide) encoding at least one polypeptide having a hydrolase activity, wherein the polypeptide comprises the sequence of SEQ ID NO:2, SEQ ID NO:4, SEQ ID NO:6, SEQ ID NO:8, SEQ ID NO:10, SEQ ID NO:12, SEQ ID NO:14, SEQ ID NO:16, SEQ ID NO:18, or SEQ ID NO:20 or enzymatically active fragments thereof,
- (g) (A) the nucleic acid (polynucleotide) of any of (a) to (f) and encoding a polypeptide having at least one conservative amino acid substitution and retaining its hydrolase activity, or, (B) the nucleic acid of (g)(A), wherein the at least one conservative amino acid substitution comprises substituting an amino acid with another amino acid of like characteristics;
- or, a conservative substitution comprises:
- replacement of an aliphatic amino acid with another aliphatic amino acid;
- replacement of a serine with a threonine or vice versa;
- replacement of an acidic residue with another acidic residue;
- replacement of a residue bearing an amide group with another residue bearing an amide group;
- exchange of a basic residue with another basic residue;
- or replacement of an aromatic residue with another aromatic residue,
- (h) the nucleic acid (polynucleotide) of any of (a) to (g) encoding a polypeptide having a hydrolase activity but lacking a signal sequence,
- (i) the nucleic acid (polynucleotide) of any of (a) to (h) encoding a polypeptide having a hydrolase activity further comprising a heterologous sequence,
- (j) the nucleic acid (polynucleotide) of (i), wherein the heterologous sequence comprises, or consists of a sequence encoding:
- (A) a heterologous signal sequence, (B) the sequence of (A), wherein the heterologous signal sequence is derived from a heterologous enzyme, or, (C) a tag, an epitope, a targeting peptide, a cleavable sequence, a detectable moiety or an enzyme, or,
- (k) a nucleic acid sequence (polynucleotide) fully (completely) complementary to the sequence of any of (a) to (j).
A composition comprising a hydrolase as set forth in claim 11, the variant hydrolase of claim 35, or the enzyme generated by the method of claim 37, wherein optionally the composition is a food, feed, food supplement, feed supplement, dietary aid or dietary composition, and wherein optionally the food, feed, food supplement, feed supplement, dietary aid or dietary composition further comprises a nutritional base comprising a fat or a fat and no or little hydrolase, or optionally the hydrolase is activated by a bile salt, or optionally the food, feed, food supplement, feed supplement, dietary aid or dietary composition further comprises a cow's milk-based infant formula, or optionally the hydrolase can hydrolyze long chain fatty acids.
A lipase comprising an amino acid sequence as set forth in SEQ ID NO:2 but also comprising at least amino acid residue modification D61A;
- D61E;
- R72E;
- R72K;
- E116A;
- E116Q;
- E116R;
- E116T;
- E116V;
- S133A;
- I151G;
- I151A;
- V163R;
- D164R, or the equivalent thereof, or a combination thereof.
A lipase comprising an amino acid sequence as set forth in SEQ ID NO:2 but also comprising at least amino acid residue modification 120L;
- V62S;
- G77P;
- V83C;
- D88H;
- Y113G;
- E116T;
- E116G;
- H140K;
- K146S;
- I167S;
- L180E;
- E194M;
- A211Q;
- S212Y;
- G215C;
- G215V;
- G215W;
- A218H;
- A218S;
- V223A;
- A225M;
- A225Q, or the equivalent thereof, or a combination thereof.
Dependencies are inferred from the claim text.