Figure 2

Phylogenetic analyses of VWA domains of VWA-CB dcps of molluscan shells. (a) Schematic representations of domain structures of shell-specific BMSPs. (b) A Bayesian tree based on the LG model and 187 amino acid residues. Polychotomy is generated if the posterior probability value of the node is < 50. Posterior probability values are shown if ≥ 50, and marked with black dots if ≥ 80. The same symbol marks as in Fig. 1 are used to denote different SMPs. Larval SMPs are marked by “L”, and Pfu-BMSP identified from both larval and adult shells of P. fucata is indicated by “L&A”. BMSP family proteins are indicated by bold characters. Cgi, Crassostrea gigas; Pfu, Pinctada fucata; Mga, Mytilus galloprovincialis; Lgi, Lottia gigantea; Lan, Lingula anatina; Dp, duplication.