Amino acid replacement: N61I. Amino acid replacement: L63R. N61 and L63 fall in helix I of the bHLH region. Nucleotide substitution: A451T and T457G (nucleotide positions as in cDNA sequence of FBrf0056120).
A8231639T
A451T
N61I | dpn-PA
N61I.
1st of two single nucleotide changes in mutant
T8231633G
T457G
L63R | dpn-PA
L63R
2nd of two single nucleotide changes in mutant
dpn[+]/dpn6 is an enhancer of wing margin phenotype of N55e11
Functionally a null allele. Viability over deficiencies for dpn is two- to three-fold lower than for dpn3, dpn4 or dpn5. Viability of dpn1/dpn6 is unexpectedly high, perhaps due to transvection between the alleles. Complementation between mutant dpn alleles reveals differences in strength but little male-specific lethality.