Fig 2. ANP32A proteins from different species interact with different polymerase trimeric complexes.
DKO cells were transfected with different ANP32A (0.6μg) and polymerase plasmids (0.6μg PA, 1μg PB1, and 1μg PB2) from avian influenza viruses H7N9ZJ13 (A), H9N2ZJ12 (B), human influenza virus polymerase WSN (C). The cells were lysed at 24 h post-transfection. Co-IP was performed using Anti-FLAG M2 Magnetic Beads, followed by Western blotting to detect the ANP32A and viral proteins by using specific antibodies: PA antibody (NBP2-42874, NOVUS), PB1 antibody (NBP2-42877, NOVUS), PB2 antibody (NBP2-42879, NOVUS), Anti-Flag antibody (F1804, SIGMA).