Vectors for expression of biocatalysts
The present invention provides engineered proline hydroxylase polypeptides for the production of hydroxylated compounds, polynucleotides encoding the engineered proline hydroxylases, host cells capable of expressing the engineered proline hydroxylases, and methods of using the engineered proline hydroxylases to prepare compounds useful in the production of active pharmaceutical agents.
1. An expression vector comprising a polynucleotide comprising SEQ ID NO:1007, 1008, or 1009 with up to 20 nucleotide substitutions, insertions, or deletions in the polynucleotide sequence of SEQ ID NO: 1007, 1008, or 1009.
2. The expression vector of claim 1 , additionally comprising an engineered polynucleotide encoding an engineered polypeptide, wherein said engineered polypeptide is capable of converting (S)-pipecolic acid to (2S,5S)-5-hydroxypipecolic acid with greater than 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, or 99% diastereomeric excess of (2S,5R)-5-hydroxypipecolic acid.
3. The expression vector of claim 1 , further comprising at least one control sequence.
4. The expression vector of claim 3 , wherein said at least one control sequence comprises a ribosome binding site.
5. The expression vector of claim 3 , wherein said at least one control sequence comprises an Escherichia coli lac operon.
6. The expression vector of claim 1 , further comprises a chloramphenicol resistance gene.
7. The expression vector of claim 2 , wherein said engineered polynucleotide encoding an engineered polypeptide comprises a nucleic acid sequence optimized for expression in Escherichia coli.
8. A host cell comprising the expression vector of claim 1 .
9. A host cell comprising the expression vector of claim 2 .
10. The host cell of claim 8 , wherein the host cell is Escherichia coli.
11. The host cell of claim 9 , wherein the host cell is Escherichia coli.
12. A method of preparing an engineered polypeptide, comprising culturing the host cell of claim 9 , under conditions suitable for expression of the polypeptide.
13. The method of claim 12 , further comprising a step of isolating the engineered polypeptide.
14. A method of preparing an engineered polypeptide, comprising culturing the host cell of claim 10 , under conditions suitable for expression of the polypeptide.
15. The method of claim 14 , further comprising a step of isolating the engineered polypeptide.