Ubiquitously expressed. ABHD11 is located in the Williams-Beuren syndrome (WBS) critical region. WBS results from a hemizygous deletion of several genes on chromosome 7q11.23, thought to arise as a consequence of unequal crossing over between highly homologous low-copy repeat sequences flanking the deleted region. Belongs to the AB hydrolase superfamily. It is uncertain whether Met-1 or Met-10 is the initiator. Wrong choice of frame.