Deletion causing frameshift at residue 638 causing deletion of the carboxy terminal 167 amino acids.
16bp deletion of genomic sequences 2951-2962, only the first 638 amino acids are present followed by 84 new amino acids.
Class II fu allele, affects the carboxy domain of the protein by changing the open reading frame in the 5' region.
12bp deleted and replaced with one base (C)
C
Mutants show fusions between wing veins L3 and L4, as well as a narrowing of the distance between these veins. At the wing margin, double row bristles extend beyond vein 3 to vein 4.
Su(fu)LP, fuRX16 has wing blade anterior compartment phenotype
Su(fu)LP, fuRX16 has leg anterior compartment phenotype
Su(fu)LP, fuRX16 has haltere anterior compartment phenotype
When in combination with Su(fu)LP heterozygotes individuals die as pupae. Adult escapers display wings, halteres and legs that have duplication of structures in the anterior compartment and shortening along the proximal-distal axis. Embryos derived from heterozygotes with Su(fu) mutants display a segment polarity phenotype: thoracic denticle belts are absent, last two rows of abdominal denticle belts are absent and a mirror image duplication of anterior rows of abdominal denticle belts.
Class II mutation based on interaction with Su(fu)LP, suppression of embryonic and adult phenotype but display an additional phenotype.
Class II allele.