tokens: These include NPF repeats , a leucine heptad repeat enriched in charged residues , and a proline rich SH3 like and / or WW domain binding site in the N-terminal domain , which is followed by a membrane core containing four putative transmembrane spans and three amphiphilic segments that are the most highly conserved structural elements .
folded_tokens: these include npf repeat , a leucine heptad repeat enrich in charge residue , and a proline rich sh3 like and / or ww domain bind site in the n-terminal domain , which be follow by a membrane core contain four putative transmembrane span and three amphiphilic segment that be the most highly conserve structural element .