Novel bacterial esterase 713 that cleaves esters on halogenated cyclic compounds
This family contains proteins similar to a novel bacterial esterase (esterase 713) with the alpha/beta hydrolase fold that cleaves esters on halogenated cyclic compounds. This Alcaligenes esterase, however, does not contain the GXSXXG pentapeptide around the active site serine residue as seen in other esterase families. This enzyme is active as a dimer though its natural substrate is unknown. It has two distinct disulfide bridges; one formed between adjacent cysteines appears to facilitate the correct formation of the oxyanion cleft in the catalytic site. Esterase 713 also resembles human pancreatic lipase in its location of the acidic residue of the catalytic triad. It is possibly exported from the cytosol to the periplasmic space. A large majority of sequences in this family have yet to be characterized.
Jiyao W et al.(2023). "The conserved domain database in 2023.",