Df(3R)kay1 breaks between the first and second exons of kay and removes the first exon, extending to the upstream region of kay.
Nucleotide substitution: T1045A.
Amino acid replacement: L92term.
Deletion in the 5' region of kay, removing exon 1 (including the translation start site).
T29791445A
T1045A
L92term | kay-PA; L43term | kay-PB; L219term | kay-PD; L252term | kay-PF; L143term | kay-PG
L92term
The presence of a nonsense mutation in kay1 is disputed by the authors of FBrf0100315 and FBrf0112258 who find that kay1 is caused by a deletion that breaks after the first exon and removes exon 1.
adult thorax | dorsal (with kay2), with kayhs.PZ
embryo | dorsal closure stage (with kay2)
mesothoracic cleft (with kay2)
kay1 neuroblast clones in the mushroom body have no gross axonal phenotypes.
kay1 embryos show a complete failure of dorsal closure.
Heterozygous adults treated with hydrogen peroxide at the onset of metamorphosis do not show any defects.
Mutant embryos have a dorsal closure phenotype.
kay1/kay2 animals show a lethality and a thoracic cleft phenotype. These animals, do not recover when wounded. The epithelial cells at the edge of the wound also fail to undergo any evident cell shape change or show any cytoplasmic protusive extrusions. even after 18 hours after injury, the wound is not repaired.
When kayFbz.Scer\UAS is expressed under the control of Scer\GAL4dpp.blk1 in a kay1 heterozygote, there is an almost complete loss of longitudinal vein III. When kayFbz.Scer\UAS is expressed under the control of Scer\GAL4en-e16E in a kay1 heterozygote a more complete loss of longitudinal vein V is seen. When kayFbz.Scer\UAS is expressed under the control of Scer\GAL4sd-SG29.1 in a kay1 heterozygote all wing vein is strongly reduced.
Mosaic egg chambers in which the follicular epithelium is composed almost entirely of homozygous kay1 cells have a wild-type phenotype until stage 7/8 but degenerate during stage 9. This degeneration is associated with a failure of the main body follicle cells to accomplish their normal posteriorwards migration. Migration of border cells appears unaffected.
Embryos fail to show complete elongation of the dorsal epidermis after germband retraction. No bunching of the epidermis is seen.
Homozygotes die during embryogenesis, and have large anterior and dorsal holes, indicating a failure in dorsal closure and head involution. The leading edge epidermal cells initiate elongation transiently but subsequently resume the unelongated shape, while the more lateral epidermal cells elongate to a very minor extent and resume the typical polygonal shape after dorsal closure has been terminated prematurely. kay1/kay2 transheterozygotes are fully lethal as embryos at 25oC and 35% die as embryos at 18oC. The remaining 65% die as first instar larvae at 18oC. Homozygous embryos carrying two copies of kayαTub84B.PZ undergo normal dorsal closure and do not show the "dorsal open" phenotype, but fail to hatch. The degree of rescue is dependent on the dose of kayαTub84B.PZ. The lethality of kay1/kay2 transheterozygotes is rescued to adulthood by kayαTub84B.PZ. These adults have a cleft along the dorsal midline of the thorax. The lethality of kay1/kay2 transheterozygotes is also rescued to adulthood by kayhs.PZ. Some of these adults have a cleft along the dorsal midline of the thorax, and some appear wild-type.
Nondefective in gonad assembly.
embryonic lethal embryo open dorsally.
kay1 has decreased cell number | embryonic stage phenotype, suppressible by diaΔDad.UASp.EGFP/Scer\GAL4srp.Hemo
kay1/kay2 has lethal phenotype, suppressible by Jra::kayFJF.hs.sev
kay1 has lethal | recessive phenotype, non-suppressible by Jra::kayJFJ.hs.sev
kay1/kay[+] is an enhancer of partially lethal - majority die phenotype of slprBS06
kay1/kay[+] is a suppressor of abnormal locomotor behavior | adult stage | progressive phenotype of mir-969KO
kay1/kay[+] is a suppressor of abnormal neuroanatomy | larval stage phenotype of Eaat1hypo
kay1/kay[+] is a suppressor of abnormal planar polarity phenotype of dshhs.sev.B
kay1/kay[+] is a suppressor of abnormal neuroanatomy phenotype of Hsap\APPUAS.Tag:MYC, Scer\GAL4P2.4.Pdf
kay1 has embryonic epidermis | dorsal phenotype, enhanceable by bsk1
kay1/kay2 has embryo | dorsal closure stage phenotype, non-enhanceable by eg18B
kay1/kay2 has embryo | dorsal closure stage phenotype, non-enhanceable by kni2
kay1 has embryonic/larval plasmatocyte | embryonic stage | decreased number phenotype, suppressible by diaΔDad.UASp.EGFP/Scer\GAL4srp.Hemo
kay1 has germ band phenotype, suppressible by diaΔDad.UASp.EGFP/Scer\GAL4srp.Hemo
kay1/kay2 has embryonic dorsal epidermis phenotype, suppressible | partially by Jra::kayFJF.hs.sev
kay1 has embryonic dorsal epidermis phenotype, suppressible by Jra::kayFJF.hs.sev
kay1/kay2 has embryo | dorsal closure stage phenotype, suppressible by svp1
kay1/kay2 has mesothoracic cleft phenotype, suppressible | partially by pucE69
kay1 has embryonic dorsal epidermis phenotype, non-suppressible by Jra::kayJFJ.hs.sev
kay1/kay2 has embryo | dorsal closure stage phenotype, non-suppressible by eg18B
kay1/kay2 has embryo | dorsal closure stage phenotype, non-suppressible by kni2
kay1/kay[+] is an enhancer of adult thorax | pharate adult stage phenotype of chm14
kay1 is an enhancer of embryo | dorsal closure stage phenotype of Scer\GAL4pnr-MD237, knrlUAS.cLa
kay1/kay[+] is a suppressor of embryonic/larval neuromuscular junction | larval stage phenotype of Eaat1hypo
kay1/kay[+] is a suppressor of NMJ bouton | increased number | larval stage phenotype of Eaat1hypo
kay1/kay[+] is a suppressor of lamellocyte | increased number phenotype of hopTum
kay1/kay[+] is a suppressor of ommatidium phenotype of dshhs.sev.B
kay1/kay[+] is a suppressor of ventral adult lateral neuron & axon phenotype of Hsap\APPUAS.Tag:MYC, Scer\GAL4P2.4.Pdf
kay1/kay[+] is a non-suppressor of adult thorax phenotype of Mnn1UAS.cCa, Scer\GAL4pnr-MD237
kay1, mbf12 has adult cuticle phenotype
Jra::kayFJF.hs.sev, kay1/kay2 has adult thorax | dorsal phenotype
kay1/kay2, pucE69 has adult thorax | dorsal phenotype
One copy of kay1 suppresses the formation of symmetrical ommatidia that is seen in animals expressing dshhs.sev.B.
A kay1/+ background has no effect on the Scer\GAL4pnr-MD237>Mnn1Scer\UAS.cCa phenotype.
The dorsal open phenotype of kay1 homozygous embryos is not rescued by Jra::kayJFJ.hs.sev. The dorsal open phenotype of kay1/kay2 and kay1 homozygous embryos is at least partially rescued by Jra::kayFJF.hs.sev. kay1/kay2 adults rescued by the expression of Jra::kayFJF.hs.sev have a marked cleft along the dorsal midline of the thorax.
The dorsal open phenotype caused by expression of egScer\UAS.cDa under the control of Scer\GAL4pnr-MD237 is enhanced by kay1. The dorsal closure phenotype caused by expression of knrlScer\UAS.cLa under the control of Scer\GAL4pnr-MD237 is enhanced by kay1. kay2/kay2 svp1 flies are viable, and sometimes have mild thorax closure defects.
The addition of pucE69 partially rescues the lethality and thoracic cleft phenotypes.
Heterozygosity for kay1 suppresses the Scer\GAL4P2.4.Pdf>Hsap\APPScer\UAS.T:Hsap\MYC sLNv axonal arborization phenotype.
kayEY01644/kay1 is rescued by kayαTub84B.PZ
kay1/kay2 is rescued by kayαTub84B.PZ
kay1 is rescued by kayαTub84B.PZ
kay1/kay2 is partially rescued by Scer\GAL469B/kayUAS.cEa
kay1/kay2 is not rescued by Scer\GAL4pnr-MD237/kayUAS.cEa
Embryonic phenotype is rescued by Scer\GAL469B-mediated expression of kayScer\UAS.cEa. Mutants are rescued to pharate adults, they exhibit a split thorax and frequently lack one wing. Scer\GAL4pnr-MD237-mediated expression of kayScer\UAS.cEa in kay1/kay2 transheterozygous embryos fails to rescue the dorsal open phenotype.
Consists of a deletion that removes more than one complementation group.
Allelic series according to phenotypic strength: kay1 > kayED6315 > kayP54 > kayEY01644 > kay2.
kay1 complements sro1 and sroO4-105.