Amino acid replacement: I61S.
Pabp2I61S.g partially rescues Pabp2EP2264
Pabp2I61S.g partially rescues Pabp26
Pabp2I61S.g fails to rescue Pabp255/Df(2R)CA53
Pabp2I61S.g/+ fails to rescue the lethality due to Pabp255/Df(2R)CA53, weakly rescues lethality due to Pabp2EP2264/Pabp2EP2264 (only 4% escapers) and partially rescues lethality due to Pabp26/Pabp26. The maternal effect embryonic lethality due to Pabp26 is rescued when the mothers also carry Pabp2I61S.g.