Mechanism of Catch Force: Tethering of Thick and Thin Filaments by Twitchin

Figure 4

The domain structure of Mytilus twitchin. Green, immunoglobulin-like motifs; yellow, fibronectin type III motifs; purple, kinase domain; and red circles, phosphorylation sites. The underlined sequences near the N-terminus share 7 identical amino acids and contain the DX and D1 phosphorylation sites (). The D2 phosphorylation site () is near the N-terminus.