NCIt definition : A fusion protein ( 54 kDa) encoded by the NPM1/MLF1 fusion gene. This protein contains
175 N-terminal domain amino acid residues from the nucleophosmin protein, including
its dimerization domain and a nuclear localization signal, fused in frame with the
myeloid leukemia factor 1 protein (MLF1). Since the nucleophosmin-derived sequences
of the NPM1/MLF1 fusion protein can promote its nuclear localization, expression of
this fusion protein may result in nuclear localization of MLF1 and lead to aberrant
activation of MLF1-dependent transcription factor activity, which may stimulate the
differentiation of hemopoietic progenitors into myeloid cells.;