Figure 3
From: Ancestry & molecular evolutionary analyses of heat shock protein 47 kDa (HSP47/SERPINH1)

Synteny analyses depict origin of different HSP47/SERPINH1 genes. (A) Orthology is shared by tetrapod HSP47/SERPINH1 gene and ray-finned specific HSP47_1/SERPINH1 gene and selected ray-finned fishes have intron gain. Tetrapod HSP47/SERPINH1 shares loci with ray-finned specific HSP47_1. HSP47_1 locus is conserved in different ray-finned fishes as shown in the red box, but not all ray-finned fishes intron gain and fishes with no intron gain are shown in green box. (B) HSP47_2 is originated by recent duplication of HSP47_1. (C) Locus of HSP47_3 is distinct with only few conserved marker genes. + = presence of two additional introns at the positions 36b and 102b; X = Gene is either partial or lost.