E. gracilis consensus EST clusters contain sequences corresponding to spliced leaders. A. SdhB-n. B. SdhB-c. Letters in italics and smaller font represent nucleic acid sequences, while larger bolded letters represent the N-terminus of the inferred protein sequences. The | character denotes the 3' end of the spliced leader. 'EST' refers to the sequence of the expressed sequence tag and 'SL' refers to the sequence of the spliced leader. C. Consensus mTP profile generated from de-gapped alignment of the N-terminal 30 residues from 107 E. gracilis predicted mitochondrion-targeted proteins.