Amino acid replacement: Q263term.
The number of the base mutated corresponds to the numbering given for the genomic sequence of nos in FBrf0053387, with one correction: an extra three bases (AGA) have been found between bases 1410 and 1411, replacing His 201 with Gln and Ile.
Nucleotide substitution: C1596T.
nanos139.αTub84B.UTR.Tag:HA fails to rescue nanos18
Fails to rescue the abdominal phenotype of embryos derived from nos18 females, although hatching larvae are produced at a low frequency.
Selected as: a mutation that reverts the female sterile phenotype of flies carrying nosαTub84B.UTR.T:Ivir\HA1.