Mutated His4 gene (amino acid replacement K20A) in the context of a histone gene repeat unit.
Expression of a transgene bearing 12 copies of a mutated form of the histone repeat unit (PBac{12xHisTA.H4K20A} - comprised of 12xHis4HisTA.H4K20A and 12x wild type copies of His1HisTA.wt, His2AHisTA.wt, His2BHisTA.wt and His3HisTA.wt) in a wild type background has no observable phenotype.
Df(2L)HisC, His4HisTA.H4K20A has increased mortality during development phenotype, enhanceable by His4r15-4/His4rS9
Df(2L)HisC, His4HisTA.H4K20A has increased mortality during development phenotype, enhanceable by His4r15-4/His4rK20A
Df(2L)HisC, His4HisTA.H4K20A has partially lethal - majority die phenotype
Df(2L)HisC, His4HisTA.H4K20A has decreased body size | pupal stage phenotype
Df(2L)HisC, His4HisTA.H4K20A has majority die during P-stage phenotype
Df(2L)HisC, His4HisTA.H4K20A, His4r15-4/His4rK20A has majority die during larval stage phenotype
Df(2L)HisC, His4HisTA.H4K20A, His4rLL05512 has partially lethal - majority live phenotype
Df(2L)HisC, His4HisTA.H4K20A, His4rLL05512 has some die during pupal stage phenotype
Df(2L)HisC, His4HisTA.H4K20A, His4r15-4 has interommatidial bristle phenotype
85% of flies that are homozygous for His4rLL05512 and Df(2L)HisC and express a mutated form of the histone repeat unit transgene containing 12 copies of the histone gene repeat unit (PBac{12xHisTA.H4K20A} - comprised of His4HisTA.H4K20A and wild type copies of His1HisTA.wt, His2AHisTA.wt, His2BHisTA.wt, His3HisTA.wt) are able to pupate and 35% develop until late pharate adults.
His4HisTA.H4K20A partially rescues Df(2L)HisC
Expression of a transgene bearing 12 copies of a mutated form of the histone repeat unit (PBac{12xHisTA.H4K20A} -comprised of 12xHis4HisTA.H4K20A and 12x wild type copies of His1HisTA.wt, His2AHisTA.wt, His2BHisTA.wt and His3HisTA.wt) partially rescues the lethality of homozygous Df(2L)HisC mutant flies. The resulting flies exhibit a significant developmental delay.