Method for producing recombinant 11-de-O-methyltomaymycin
The present invention provides a tomaymycin biosynthetic gene cluster of Streptomyces species FH6421, and its use for producing 11-de-O-methyltomaymycin.
1. An expression vector comprising the gene cluster of SEQ ID NO: 2 or a variant or fragment thereof wherein the variant or fragment encodes proteins with at least 90% amino acid sequence identity to SEQ ID NOs: 4 to 22.
2. A cell comprising the expression vector according to claim 1 .
3. A method for producing a cell that harbors the expression vector of claim 1 , the method comprising transforming a cell with the expression vector.
4. The method according to claim 3 , wherein the cell harbors the tomaymycin biosynthetic gene cluster of SEQ ID NO: 2.
5. The method according to claim 4 , wherein the cell is a Streptomyces strain.
6. The method according to claim 5 , wherein the Streptomyces strain is selected from the group consisting of Streptomyces achromogenes var. tomaymyceticus, Streptomyces species FH6421, and Streptomyces albus /pStW102tc.
7. The method according to claim 3 , wherein the cell is capable of producing 11-de-O-methyltomaymycin.
8. The expression vector according to claim 1 , comprising the nucleic acid sequence of SEQ ID NO: 3.
9. The cell according to claim 2 , wherein the cell is a Streptomyces cell.
10. The cell according to claim 2 , wherein the cell is a Streptomyces albus cell.