TI - Candidate Aurora B SUBstrates identified by MALDI-TOF MS from partially-extracted metaphase chromosomes . AB - Apparent mass ( kDa ) Proteins identified 52 Keratin 17 56 ATP synthase , H+ transporting , mitochondrial F1 complex alpha subunit ; ATP synthase , beta subunit ; keratin 8 62 DEAD/H box polypeptide 30 ; hypothetical protein FLJ10709 76 GTP -binding protein NGB ; NADH-ubiquinone oxidoreductase 75 kDa subunit precursor ; BiP protein 170 Topo IIalpha ; chromosome-associated polypeptide C ( CAP-C/SMC-4 ) Note that additional data are provided for each of these identifications in Table 1 ; the ProFound analysis refers to these proteins .