tokens: SV1 has a 33-amino acid insert in the S1 transmembrane domain that does not alter S1 overall hydrophobicity , but makes the S0-S1 linker longer .
folded_tokens: sv1 have a 33-amino acid insert in the s1 transmembrane domain that do not alter s1 overall hydrophobicity , but make the s0-s1 linker longer .