Fig. 2. Identification of the protein mediating the increase of GTRAP3-18 expression by miR-96-5p.

a The binding protein samples extracted from the magnetic beads conjugated with GTRAP3-18 3′-UTR RNA or scrambled RNA (control) were loaded on the SDS-PAGE gel. CBB stained gels are shown. Arrows indicate the bands analyzed by mass spectrometry. Molecular weight markers are depicted at left. The full-length gel is presented in Supplementary Fig. 13. b A result of mass spectrometry analysis of the purified protein with the matched amino acids is shown (red). List of the RBP candidates is presented in Supplementary Table 1.