Imprecise excision of the progenitor insertion, resulting in a 1818bp deletion downstream of the original insertion site. This deletion includes the first short exon, and no transcription from the NFAT b promoter can be detected.
Reported as having 1818 bp deleted downstream of the 8 bp P{EP}NFATEP1508 insertion sequence. Position of insertion site on reference sequence inferred by FlyBase curator.
NFATΔb mutants exhibit minimal differences in neuromuscular junction size.
Mutants have no obvious morphological defects.
Mutant larvae show normal survival in food containing 0.2M or 0.4M NaCl.