TWIST2 GI:17981708 twist homolog 2 1 meegssspvs pvdslgtsee elerqpkrfg rkrryskkss edgsptpgkr 50 51 gkkgspsaqs feelqsqril anvrerqrtq slneafaalr kiiptlpsdk 100 101 lskiqtlkla aryidflyqv lqsdemdnkm tscsyvaher lsyafsvwrm 150 151 egawsmsash