PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 33567435-9 2021 The ester-linked fatty acid may be removed by an as yet unidentified esterase, and the resulting omega-hydroxyceramide may become ester linked to the outer surface of the cornified envelope through action of transglutaminase 1. Fatty Acids 17-27 transglutaminase 1 Homo sapiens 208-226