Figure 1. Phylogenetic tree of the human myosin superfamily. Solid lines indicate myosins for which chromosomal deoxyribonucleic acid (cDNA) sequences exist, and dashed lines indicate putative myosins predicted from genomic sequence. Recently discovered or newly predicted myosin genes are italicized, and potential gene names suggested for myosins predicted from genomic sequence are indicated in parentheses. The tree was modified from the one provided by R. Cheney (Berg et al., 2001).

Figure 2. Crystal structure of the head of scallop striated muscle myosin. The three-dimensional structure of the scallop striated muscle head fragment protein 1DFK is shown in ribbon format. The myosin heavy chain is depicted in blue, the essential light chain in red and the regulatory light chain in green.

Figure 3. Bar diagrams of the heavy chains of the human myosin superfamily. A representative myosin from each class found in humans is shown. The various functional domains are color-coded and are drawn approximately to scale.