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Figure 3 | BMC Evolutionary Biology

Figure 3

From: Putative cross-kingdom horizontal gene transfer in sponge (Porifera) mitochondria

Figure 3

Alignment of the Tetilla intron with introns that include closely-related LAGLIDADG and with other metazoan introns. The conserved regions P, Q, S, R are indicated by yellow boxes; the base-paired regions P1–P9 are underlined; brackets indicate the number of nucleotides; blue boxes indicate the location of the ORF. The core regions and ORF positions of Agrocybe aegerita cox1 intron 2, Emericella nidulans cox1 intron 3, Schizosaccharomyces pombe cox1 intron 2, Penicillium marneffrei cox1 intron 3, Metridium senile cox1 and nd5 introns, and Acropor a tenuis nd5 intron were derived from publications [6, 7, 54–57]. The core region of the cox1 intron 4 of Smittium culisetae was determined using the program CITRON [45]. As suggested in the program manual the parameters that constrain the minimal definition of (P3, P3') were lowered, since no putative intron was found using the default parameters. Specifically, T10 was set to 3 and T11 to 15. The location of the P1 paired region and the presence or absence of the P2 paired region were not determined for Smittium.

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