THIOESTERASES AND CELLS FOR PRODUCTION OF TAILORED OILS

1 . An isolated nucleic acid having at least 80% sequence identity to any of SEQ ID NOS: 21, 27, 30, 69, 72, or 78 or any equivalent sequences by virtue of the degeneracy of the genetic code.

2 . An isolated nucleic acid sequence encoding a protein having at least 80% sequence identity to any of SEQ ID NO: 22, 25, 28, 67, 70, or 77, or a fragment thereof having acyl-ACP thioesterase activity.

3 . The isolated nucleic acid of claim 2 , wherein, the protein has acyl-ACP thioesterase activity operable to alter the fatty acid profile of an oil produced by a recombinant cell comprising that sequence.

4 . A method of producing a recombinant cell that produces an altered fatty acid profile, the method comprising transforming the cell with a nucleic acid according to claim 1 .

5 . A host cell produced by the method of claim 4 .

6 . The host cell of claim 5 , wherein the host cell is selected from a plant cell, a microbial cell, and a microalgal cell.

7 . A method for producing an oil or oil-derived product, the method comprising cultivating a host cell of claim 5 , and extracting oil produced thereby, optionally wherein the cultivation is heterotrophic growth on sugar.

8 . The method of claim 7 , further comprising producing a fatty acid, fuel, chemical, or other oil-derived product from the oil.

9 . An oil produced by the method of claim 7 , optionally having a fatty acid profile comprising at least 20% C14 or C16 fatty acids.

10 . An oil-derived product produced by the method of claim 8 .

11 . The oil of claim 10 , wherein the oil is produced by a microalgae and optionally, lacks C24-alpha sterols.