Immunogen Sequence: MSVDKAELCG SLLTWLQTFH VPSPCASPQD LSSGLAVAYV LNQIDPSWFN EAWLQGISED PGPNWKLKVS NLKMVLRSLV EYSQDVLAHP VSEEHLPDVS. Hook proteins are cytosolic coiled-coil proteins that contain conserved N-terminal domains, which attach to microtubules, a