The present disclosure provides a biosynthetic gene cluster of carrimycin. The biosynthetic gene cluster comprises 44 gene open reading frames (orf), i.e., 5 orfs (orf10-14) encoding polyketide synthase, 9 orfs (orf1, 4-6, 15 and 36-39) related to polyketone synthesis extension unit and modification, 16 orfs (orf9, 16-22, 24, 26, 28, 29, 33-35 and 41) related to glycosyl synthesis, 6 orfs (orf7, 8, 30-32 and 40) related to glycosyl transfer, 2 orfs (orf3 and 25) related to resistance, 4 orfs (orf2, 23, 27 and 42) possibly related to regulation, a tsr resistance marker gene orf (orf43) and a 4-mycaroseglucoside isovaleryl transferase gene orf (orf44).

Methods and materials for the production of compounds involved in fatty acid metabolism, and/or derivatives thereof and/or compounds related thereto are provided. Also provided are products produced in accordance with the methods and materials of the present invention.

The present disclosure provides a biosynthetic gene cluster of carrimycin. The biosynthetic gene cluster comprises 44 gene open reading frames (orf), i.e., 5 orfs (orf10-14) encoding polyketide synthase, 9 orfs (orf1, 4-6, 15 and 36-39) related to polyketone synthesis extension unit and modification, 16 orfs (orf9, 16-22, 24, 26, 28, 29, 33-35 and 41) related to glycosyl synthesis, 6 orfs (orf7, 8, 30-32 and 40) related to glycosyl transfer, 2 orfs (orf3 and 25) related to resistance, 4 orfs (orf2, 23, 27 and 42) possibly related to regulation, a tsr resistance marker gene orf (orf43) and a 4-mycaroseglucoside isovaleryl transferase gene orf (orf44).

The present invention relates to a method for producing fatty acids, in particular shot/medium-chain fatty acids (S/MCFA), by expression in a host cell of a recombinant fatty acid synthase (FAS) naturally devoid of a thioesterase (TE) domain comprising a heterologous thioesterase (TE). The invention further relates to polynucleotides comprising such recombinant FAS, polypeptides encoded thereby, and vectors comprising such polynucleotides, as well as recombinant host cells comprising the polynucleotides, polypeptides, or vectors.