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Figure 2 | BMC Evolutionary Biology

Figure 2

From: A clustered set of three Sp-family genes is ancestral in the Metazoa: evidence from sequence analysis, protein domain structure, developmental expression patterns and chromosomal location

Figure 2

Protein domain structure of selected Sp-family proteins. The proteins are arranged into columns according to the clades obtained in the phylogenetic sequence analysis (Sp1-4 clade, Sp5/Btd clade, Sp6-9 clade). All proteins are oriented with their amino-terminus (N) to the left, and the carboxy-terminus (C) to the right. The length of each protein is given next to the C-terminus (number of amino acids), and the name of the protein is given above the protein. Incomplete termini of proteins are indicated by dashed lines. Structural domains are indicated by different colors and shadings explained in the legend below the proteins. Protein domain color coding after Bouwman and Philipsen [31].

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