Analysis of conserved synteny blocks harboring GSTK genes in several vertebrates. Horizontal lines denote orthologous relationships. Abbreviations: PHC: Polyhomeotic homolog; STYK1: Serine/threonine/tyrosine kinase 1; GSTK1: Glutathione S-transferase kappa 1; MBOAT7: Membrane bound O-acyltransferase domain containing 7; TMC: Transmembrane channel-like; LMTK3: Lemur tyrosine kinase 3; PRPF31: Pre-mRNA processing factor 31 homolog; CLCN1: Chloride channel, voltage-sensitive 1; CASP2: Caspase 2, apoptosis-related cysteine peptidase.