Sue Celniker recently informed us that the P{CTPsyn-GFP.FPTB} construct (FBtp0112051) expresses tagged A and B isoforms of CG45071 rather than tagged CTPsyn (the CG45071 gene is nested in an intron of CTPsyn on the same strand). Consequently, the construct symbol should be changed to P{CG45071-GFP.FPTB}.