Y47G6A.19 encodes, by alternative splicing, two isoforms of a putativemetallocarboxypeptidase orthologous to human carboxypeptidase A and Bprecursors (CPA1-6 and CPB1-2); the larger Y47G6A.19 isoform contains aC-terminal metridin-like ShK toxin domain absent from the smaller one;Y47G6A.19 and its human orthologs, along with other proteins, comprisean M14A peptidase family; Y47G6A.19 is downregulated 2.5-fold indaf-2(c) dauer larvae; however, Y47G6A.19 has no obvious function innondauer animals, since Y47G6A.19(RNAi) hermaphrodites are superficiallynormal.