The mutated residue P204 is perfectly conserved in homologs from S. cerevisiae to H. sapiens, in a region of the protein that is almost perfectly conserved, and that is thought to be required for deacetylase activity.
Amino acid replacement: P204S.
C4628064T
P204S | HDAC1-PA
P204S
Site of nucleotide substitution in mutant inferred by FlyBase based on reported amino acid change.
Rpd3326/+ flies have the normal number of dorsocentral bristles.
One copy of Rpd3326 strongly suppresses position effect variegation (PEV) at the w locus caused by In(1)wm4.
One copy of Rpd3326 strongly suppresses the telomeric position effect (TPE) in stocks carrying a variegating P{hsp26-pt-T}39C-5 insertion at the telomere of the left arm of chromosome two.
Strong suppressor of PEV in In(1)wm4. Raises the pigment levels of In(1)wm4 eyes from 5-15% of wild type levels to 60-90% of wild type levels. Significant suppressor of PEV in T(2;3)SbV. Significant suppressor of PEV in In(2R)bwVDe2 in females. In males the effect is slight, being, if anything, an enhancement of the PEV. Lethality principally affects the third larval instar stage. Shows a mild dominant semi-lethal effect on males: viability 88% of expected.
Dominant suppressor of position effect variegation in eye pigment caused by In(1)wm4 or In(2R)bwVDe2. Dominant suppressor of position effect variegation at the Sb locus caused by T(2;3)SbV. The suppressor effect on the variegation caused by In(1)wm4 is substantially reduced or eliminated entirely in male XO flies lacking a Y chromosome. Rpd3326/Su(var)3-9unspecified heterozygotes are inviable, suggesting the two mutations are allelic.
HDAC1326/Rpd3[+], pnrD1 has dorsocentral bristle | increased number phenotype, enhanceable by CtBP[+]/CtBPrev19
HDAC1326/Rpd3[+] is an enhancer of dorsocentral bristle | increased number phenotype of pnrD1
HDAC1326/Rpd3[+] is an enhancer of dorsocentral bristle | increased number phenotype of CtBP[+]/CtBPrev19, pnrD1
Rpd3326 still suppresses position effect variegation at the w gene caused by In(1)wm4h in a Su(var)3-9+t11.5 background.