Fig. 4

Gene clustering and fusion of algal selenoproteins. a Matrix of gene clusters of algal selenoproteins. A matrix cell composed of two or more colored boxes is a gene cluster. The colored box and the label on top indicate the family of the gene in the cluster. The U or C in the box represents the Sec or Cys form of the gene in the cluster. The species names are labeled on the left. b Genomic synteny of sequences containing the SELENOF-PDI_a gene cluster. c Conserved domain distribution matrix of algae selenoproteins. The abbreviation of each selenoprotein family is labeled at the top. The name and IPR id of the conserved domain are marked on the left. The number in the colored box next to the domain name indicates how many selenoprotein families contain the domain. The colored box in the matrix indicates that the corresponding domain has been detected in the selenoprotein family on the top. d Gene structure of fusion selenoprotein genes. The ruler on the top shows the genomic location. The arrow on the green box indicates the strand of the gene. The position of the EST matching the genome sequence is shown by the pink box