TesA is a multifunctional esterase that can act as a thioesterase, arylesterase, lysophospholipase and protease. a fatty acyl-CoA + H2O = a fatty acid + CoA + H(+) H2O + hexadecanoyl-CoA = CoA + H(+) + hexadecanoate (9Z)-hexadecenoyl-CoA + H2O = (9Z)-hexadecenoate + CoA + H(+) H2O + octadecanoyl-CoA = CoA + H(+) + octadecanoate (9Z)-octadecenoyl-CoA + H2O = (9Z)-octadecenoate + CoA + H(+) (9Z)-octadecenoyl-[ACP] + H2O = (9Z)-octadecenoate + H(+) + holo-[ACP] (11Z)-octadecenoyl-CoA + H2O = (11Z)-octadecenoate + CoA + H(+) H2O + tetradecanoyl-CoA = CoA + H(+) + tetradecanoate (5Z,8Z,11Z,14Z)-eicosatetraenoyl-CoA + H2O = (5Z,8Z,11Z,14Z)-eicosatetraenoate + CoA + H(+) dodecanoyl-CoA + H2O = CoA + dodecanoate + H(+) decanoyl-CoA + H2O = CoA + decanoate + H(+) H2O + hexanoyl-CoA = CoA + H(+) + hexanoate a 1-acyl-sn-glycero-3-phosphocholine + H2O = a fatty acid + H(+) + sn-glycerol 3-phosphocholine a phenyl acetate + H2O = a phenol + acetate + H(+) a butanoate ester + H2O = an aliphatic alcohol + butanoate + H(+) a hexanoate ester + H2O = an aliphatic alcohol + H(+) + hexanoate an octanoate ester + H2O = an aliphatic alcohol + H(+) + octanoate Monomer or homotetramer. Belongs to the 'GDSL' lipolytic enzyme family. Extended N-terminus.