Amino acid replacement: C154Y. Nucleotide substitution: G?A. Amino acid replacement: S164F. Nucleotide substitution: T?C.
G2181828A
C154Y | pn-PA
first of two mutations
C2181858T
S164F | pn-PA
second of two mutations
pnhs.4 fails to rescue the lethal interaction of pnA with awdK. pnhs.3 does rescue the lethality (with or without heat shock) and male progeny are recovered. Eye colour of P{HS-PN+4} transformants remains pn even after several heat pulses, P{HS-PN+3} transformants (without heat shock or with one or numerous heat shocks) exhibit wild-type colouration.