Comparison of amino acid sequences of PiCYP74C9 with other CYP74 family members. LeAOS3 [Genbank: z AF454634], CmHPL [Genbank: z AF081955], LeAOS1 [Genbank: AJ271093], LeDES [Genbank: AF317515], LeHPL [Genbank: z AF230372], PiCYP74C9 [Genbank: z DQ351288]. Shading indicates amino acids identical or similar to residues in PiCYP74C9. Decoration near residue 120 indicates the PPGP membrane hinge. Hollow arrow indicates conserved I/A/V found in members of the CYP74 family. The conserved cysteine present in all P450s is indicated by the solid arrow.