Mutation falls in the carboxy-terminal part of the protein, well downstream of the second Sxl RNA recognition motif, in a stretch of 7 proline residues interrupted by a single glutamine.
Amino acid replacement: P315L.
C7084646T
C?T
P276L | Sxl-PA; P284L | Sxl-PAB; P293L | Sxl-PAC; P306L | Sxl-PC; P316L | Sxl-PD; P276L | Sxl-PE; P308L | Sxl-PG; P308L | Sxl-PH; P308L | Sxl-PJ; P316L | Sxl-PL; P306L | Sxl-PN; P306L | Sxl-PO; P316L | Sxl-PP; P306L | Sxl-PR; P316L | Sxl-PT; P308L | Sxl-PW; P308L | Sxl-PX; P316L | Sxl-PY
P315L
A change from CCA (P) to CTA (L) in the P directly preceding the Q in the span PPPPPQPP.
Homozygous females are viable but sterile. 100% of ovaries of homozygous females that are not infected with Wolbachia have no eggs. This oogenesis defect is partly rescued by Wolbachia infection; 43% of the ovaries of infected homozygous females have no eggs, 25% of ovaries have 1-2 eggs, 25% of ovaries have 3-9 eggs and 7% of ovaries have more than 10 eggs. 70% of ovaries of Sxlf5/Sxlf1 females that are infected with Wolbachia have no eggs, 5% of ovaries have 1-2 eggs, 15% of ovaries have 3-9 eggs and 10% of ovaries have more than 10 eggs.
Sxlf4/Sxlf5; Su(Sxlfs)4646/+ females show severely reduced recombination and impaired segregation of homologous chromosomes. The reduction in recombination is caused by the lack of wild-type Sxl activity rather than the presence of Su(Sxlfs)4646.
XX tra1/tra4 pseudomales that are also homozygous for Sxlf5 show a decrease in the frequency of oogenic gonads and an increase in the frequency of non-oogenic gonads compared to XX tra1/tra4 pseudomales. Atrophic gonads are seen at the same frequency as XX tra1/tra4 pseudomales. Oogenic gonads are not seen in XX tra1/tra4 pseudomales carrying otuhs.PN that are also homozygous for Sxlf5. In each case the frequency of non-oogenic gonads is increased compared to XX tra1/tra4 pseudomales also homozygous for Sxlf5.
Tumorous ovaries.
Persistent cytoplasmic accumulation of Sxl protein in the germ line.
No eggs are laid, ovaries are rudimentary.
fully viable female-sterile
Sxlf1/Sxlf5 has female sterile phenotype, suppressible | partially by Oda[+]/Odak11803
Sxlf5 has female sterile phenotype, suppressible by Su(Sxlfs)4646
Sxlf5 has female sterile phenotype, suppressible by Su(Sxlfs)X2X2
Su(Sxlfs)4646, Sxlf5 has female fertile phenotype
Su(Sxlfs)X2X2, Sxlf5 has female fertile phenotype
Small amount of male-specific Sxl splicing in ovaries. Sxl product distribution is abnormal: transition to nuclear staining is not made.