Peptide sequence: MPRSFLVKSK MAHTYHQPRV QEDEPLWPPA LTPVPRDQAP SNSPVLSTLF Sequence homology: Cow: 83%; Dog: 100%; Goat: 83%; Horse: 100%; Human: 100%; Mouse: 83%; Pig: 93%; Rat: 82%. GFI1b (zinc finger protein GFI-1b) is an essential proto-oncogenic trans