Pyridoxal-dependent decarboxylase domain-containing protein 1; Isoform 5 of Pyridoxal-dependent decarboxylase domain-containing protein 1; Isoform 4 of Pyridoxal-dependent decarboxylase domain-containing protein 1; Isoform 3 of Pyridoxal-dependent decarboxylase domain-containing protein 1