Long-chain acyl-CoA thioesterase that could be involved in beta-oxidation of fatty acids (PubMed:18576672). Is most active with 3,5-tetradecadienoyl-CoA, a metabolite of oleic acid that is hydrolyzed during oleate beta-oxidation, but can also use other substrates such as 3,5-dodecadienoyl-CoA, 9-cis-octadecenoyl-CoA, octadecanoyl-CoA, hexadecanoyl-CoA, 3-hydroxytetradecanoyl-CoA and tetradecanoyl-CoA (PubMed:18576672). (3E,5Z)-tetradecadienoyl-CoA + H2O = (3E,5Z)-tetradecadienoate + CoA + H(+) (3E,5Z)-dodecadienoyl-CoA + H2O = (3E,5Z)-dodecadienoate + CoA + H(+) (9Z)-octadecenoyl-CoA + H2O = (9Z)-octadecenoate + CoA + H(+) H2O + octadecanoyl-CoA = CoA + H(+) + octadecanoate H2O + hexadecanoyl-CoA = CoA + H(+) + hexadecanoate (3S)-hydroxytetradecanoyl-CoA + H2O = (3S)-hydroxytetradecanoate + CoA + H(+) H2O + tetradecanoyl-CoA = CoA + H(+) + tetradecanoate Homotetramer. Up-regulated by growth on oleic acid. Repressed by FadR and by the cyclic AMP receptor protein-cAMP (CRP-cAMP) complex. Belongs to the 4-hydroxybenzoyl-CoA thioesterase family.