tokens: In budding yeast , this latter checkpoint response involves the proteins Mad1 , 2 , 3 , Bub1 and Bub3 , whose vertebrate counterparts localize to unattached kinetochores .
folded_tokens: in bud yeast , this latter checkpoint response involve the protein mad1 , 2 , 3 , bub1 and bub3 , whose vertebrate counterpart localize to unattached kinetochore .