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Figure 2 | BMC Evolutionary Biology

Figure 2

From: Multiple gains of spliceosomal introns in a superfamily of vertebrate protease inhibitor genes

Figure 2

Alignment of angiotensinogen sequences and intron location analysis. Angiotensinogen sequences were aligned together with mature human α1-antitrypsin (A1) serving as reference protein. The following color code is used to characterize introns: red, standard introns; green, non-canonical introns exclusively present in Oryzias latipes, Gasterosteus aculeatus and Takifugu rubripes (Fugu), but not in lampreys (Petromyzon marinus, Lampetra fluviatilis), tetrapods (human, chicken) and Danio rerio. Positions and phases (a-c) of introns are depicted above the alignment and refer to human α1-antitrypsin. The angiotensin signature sequence is reproduced in white on pink background. Residues conserved in all sequences are printed in white on grey background.

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