The gene Regulatory particle non-ATPase 3 is referred to in FlyBase by the symbol Dmel\Rpn3 (CG42641, FBgn0261396). It is a protein_coding_gene from Drosophila melanogaster. There is experimental evidence that it has the molecular function: endopeptidase activity. There is experimental evidence that it is involved in the biological process: proteolysis. 12 alleles are reported. No phenotypic data is available. It has 2 annotated transcripts and 2 annotated polypeptides. Protein features are: 26S proteasome regulatory subunit, C-terminal; PCI/PINT associated module; Proteasome component (PCI) domain; Tetratricopeptide-like helical; Winged helix-turn-helix transcription repressor DNA-binding domain. Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of very high expression to a trough of moderately high expression. Peak expression observed within 00-06 hour embryonic stages, during late larval stages, during early pupal stages. Summary of FlyAtlas Anatomical Expression Data: High or moderate levels of expression observed in all larval and adult organs/tissues. Expression at high levels in the following post-embryonic organs or tissues: larval central nervous system, larval midgut, larval hindgut, larval/adult Malpighian tubules, adult heart, larval/adult fat body, larval salivary gland, larval trachea, adult ovary, larval/adult carcass. Expression at moderate levels in the following post-embryonic organs or tissues: adult head, adult eye, adult central nervous system, adult crop, adult midgut, adult hindgut, adult salivary gland, adult spermathecae, adult male reproductive system. Comments on Affy2 ProbeSet: ProbeSet 1628269_at completely aligns to an exonic region of the only FlyBase-annotated transcript isoform of Rpn3. Gene sequence location is 2L:19051790..19053681.
User Contributed Data
Phenotypic Description from the Red Book (Lindsley
& Zimm 1992)
Gene/Allele symbols may differ
from current usage
Dox-A2: Diphenol oxidase A2 subunit
The structural gene for the A2 component of phenol
oxidase, which utilized diphenol substrates. Developmentally
regulated; levels low until just prior to pupariation;
dramatic rise to maximum at puparium formation, followed by
reduced, but still high, levels throughout pupal stage, again
decreasing at eclosion (Geiger and Mitchell, 1966, J. Insect
Physiol. 12: 755-65). Heterozygotes for lethal alleles show
reduced diphenol oxidase activity; homozygotes die as first
instar larvae; dead larvae do not turn black. One homozygous
Dox-A21 escaper reaching pharate adult stage was liberated
from the pupa case; it was chalk white, devoid of any cuticular pigment; cell lethal; no homozygous clones observed for
any of the lethal alleles.
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FB2013_03
FB2013_02
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Summary of FlyAtlas Anatomical Expression Data: High or moderate levels of expression observed in all larval and adult organs/tissues. Expression at high levels in the following post-embryonic organs or tissues: larval central nervous system, larval midgut, larval hindgut, larval/adult Malpighian tubules, adult heart, larval/adult fat body, larval salivary gland, larval trachea, adult ovary, larval/adult carcass. Expression at moderate levels in the following post-embryonic organs or tissues: adult head, adult eye, adult central nervous system, adult crop, adult midgut, adult hindgut, adult salivary gland, adult spermathecae, adult male reproductive system.
[download data (TSV)]
Guide to FlyAtlas expression level colors
No expression (0 - 9.999)
Low expression (10 - 99.999)
Moderate expression (100 - 499.999)
High level expression (500 - 999.999)
Very high expression (>999.999)
Linear, scaled to maximum expression level
Tissue
Expression Level
Larval Central Nervous System
596.85
Larval Midgut
782.2
Larval Hindgut
781.8
Larval Malpighian Tubules
1656.8
Larval Fat Body
676.4
Larval Salivary Gland
862.9
Larval Trachea
548.95
Larval Carcass
1317.275
Adult Head
322.6
Adult Eye
291.35
Adult Brain
266.3
Adult Thoracic-Abdominal Ganglion
253.6
Adult Crop
493.6
Adult Midgut
412.7
Adult Hindgut
396.8
Adult Malpighian Tubules
612.7
Adult Fat Body
822.2
Adult Salivary Gland
341.8
Adult Heart
900.75
Adult VirginFemale Spermatheca
479.4
Adult InseminatedFemale Spermatheca
460.7
Adult Ovary
802.7
Adult Testis
327.9
Adult Male Accessory Gland
433.8
Adult Carcass
642.3
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
(596.85)
Larval Midgut
(782.2)
Larval Hindgut
(781.8)
Larval Malpighian Tubules
(1656.8)
Larval Fat Body
(676.4)
Larval Salivary Gland
(862.9)
Larval Trachea
(548.95)
Larval Carcass
(1317.275)
Adult Head
322.6
Adult Eye
291.35
Adult Brain
266.3
Adult Thoracic-Abdominal Ganglion
253.6
Adult Crop
493.6
Adult Midgut
412.7
Adult Hindgut
396.8
Adult Malpighian Tubules
(612.7)
Adult Fat Body
(822.2)
Adult Salivary Gland
341.8
Adult Heart
(900.75)
Adult VirginFemale Spermatheca
479.4
Adult InseminatedFemale Spermatheca
460.7
Adult Ovary
(802.7)
Adult Testis
327.9
Adult Male Accessory Gland
433.8
Adult Carcass
(642.3)
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
596.85
Larval Midgut
782.2
Larval Hindgut
781.8
Larval Malpighian Tubules
(1656.8)
Larval Fat Body
676.4
Larval Salivary Gland
862.9
Larval Trachea
548.95
Larval Carcass
(1317.275)
Adult Head
322.6
Adult Eye
291.35
Adult Brain
266.3
Adult Thoracic-Abdominal Ganglion
253.6
Adult Crop
493.6
Adult Midgut
412.7
Adult Hindgut
396.8
Adult Malpighian Tubules
612.7
Adult Fat Body
822.2
Adult Salivary Gland
341.8
Adult Heart
900.75
Adult VirginFemale Spermatheca
479.4
Adult InseminatedFemale Spermatheca
460.7
Adult Ovary
802.7
Adult Testis
327.9
Adult Male Accessory Gland
433.8
Adult Carcass
642.3
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
596.85
Larval Midgut
782.2
Larval Hindgut
781.8
Larval Malpighian Tubules
1656.8
Larval Fat Body
676.4
Larval Salivary Gland
862.9
Larval Trachea
548.95
Larval Carcass
1317.275
Adult Head
322.6
Adult Eye
291.35
Adult Brain
266.3
Adult Thoracic-Abdominal Ganglion
253.6
Adult Crop
493.6
Adult Midgut
412.7
Adult Hindgut
396.8
Adult Malpighian Tubules
612.7
Adult Fat Body
822.2
Adult Salivary Gland
341.8
Adult Heart
900.75
Adult VirginFemale Spermatheca
479.4
Adult InseminatedFemale Spermatheca
460.7
Adult Ovary
802.7
Adult Testis
327.9
Adult Male Accessory Gland
433.8
Adult Carcass
642.3
Expression Level Scale
Very high
log, scaled to maximum expression level
Tissue
Expression Level
Larval Central Nervous System
596.85
Larval Midgut
782.2
Larval Hindgut
781.8
Larval Malpighian Tubules
1656.8
Larval Fat Body
676.4
Larval Salivary Gland
862.9
Larval Trachea
548.95
Larval Carcass
1317.275
Adult Head
322.6
Adult Eye
291.35
Adult Brain
266.3
Adult Thoracic-Abdominal Ganglion
253.6
Adult Crop
493.6
Adult Midgut
412.7
Adult Hindgut
396.8
Adult Malpighian Tubules
612.7
Adult Fat Body
822.2
Adult Salivary Gland
341.8
Adult Heart
900.75
Adult VirginFemale Spermatheca
479.4
Adult InseminatedFemale Spermatheca
460.7
Adult Ovary
802.7
Adult Testis
327.9
Adult Male Accessory Gland
433.8
Adult Carcass
642.3
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
596.85
Larval Midgut
782.2
Larval Hindgut
781.8
Larval Malpighian Tubules
(1656.8)
Larval Fat Body
676.4
Larval Salivary Gland
(862.9)
Larval Trachea
548.95
Larval Carcass
(1317.275)
Adult Head
322.6
Adult Eye
291.35
Adult Brain
266.3
Adult Thoracic-Abdominal Ganglion
253.6
Adult Crop
493.6
Adult Midgut
412.7
Adult Hindgut
396.8
Adult Malpighian Tubules
612.7
Adult Fat Body
(822.2)
Adult Salivary Gland
341.8
Adult Heart
(900.75)
Adult VirginFemale Spermatheca
479.4
Adult InseminatedFemale Spermatheca
460.7
Adult Ovary
802.7
Adult Testis
327.9
Adult Male Accessory Gland
433.8
Adult Carcass
642.3
Expression Level Scale
None
Low
Moderate
High
log, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
596.85
Larval Midgut
782.2
Larval Hindgut
781.8
Larval Malpighian Tubules
1656.8
Larval Fat Body
676.4
Larval Salivary Gland
862.9
Larval Trachea
548.95
Larval Carcass
1317.275
Adult Head
322.6
Adult Eye
291.35
Adult Brain
266.3
Adult Thoracic-Abdominal Ganglion
253.6
Adult Crop
493.6
Adult Midgut
412.7
Adult Hindgut
396.8
Adult Malpighian Tubules
612.7
Adult Fat Body
822.2
Adult Salivary Gland
341.8
Adult Heart
900.75
Adult VirginFemale Spermatheca
479.4
Adult InseminatedFemale Spermatheca
460.7
Adult Ovary
802.7
Adult Testis
327.9
Adult Male Accessory Gland
433.8
Adult Carcass
642.3
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
596.85
Larval Midgut
782.2
Larval Hindgut
781.8
Larval Malpighian Tubules
1656.8
Larval Fat Body
676.4
Larval Salivary Gland
862.9
Larval Trachea
548.95
Larval Carcass
1317.275
Adult Head
322.6
Adult Eye
291.35
Adult Brain
266.3
Adult Thoracic-Abdominal Ganglion
253.6
Adult Crop
493.6
Adult Midgut
412.7
Adult Hindgut
396.8
Adult Malpighian Tubules
612.7
Adult Fat Body
822.2
Adult Salivary Gland
341.8
Adult Heart
900.75
Adult VirginFemale Spermatheca
479.4
Adult InseminatedFemale Spermatheca
460.7
Adult Ovary
802.7
Adult Testis
327.9
Adult Male Accessory Gland
433.8
Adult Carcass
642.3
Expression Level Scale
None
Low
Moderate
High
Very high
Heatmap
Tissue
Expression Level
Larval Central Nervous System
Larval Midgut
Larval Hindgut
Larval Malpighian Tubules
Larval Fat Body
Larval Salivary Gland
Larval Trachea
Larval Carcass
Adult Head
Adult Eye
Adult Brain
Adult Thoracic-Abdominal Ganglion
Adult Crop
Adult Midgut
Adult Hindgut
Adult Malpighian Tubules
Adult Fat Body
Adult Salivary Gland
Adult Heart
Adult VirginFemale Spermatheca
Adult InseminatedFemale Spermatheca
Adult Ovary
Adult Testis
Adult Male Accessory Gland
Adult Carcass
FlyAtlas Organ/Tissue Expression, larval vs. adult
Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of very high expression to a trough of moderately high expression. Peak expression observed within 00-06 hour embryonic stages, during late larval stages, during early pupal stages.
[download data (TSV)]
inferred from direct assay AND inferred from sequence or structural similarity with human PSMD3 AND inferred from sequence or structural similarity with Saccharomyces RPN3
Please Note FlyBase no
longer curates genomic clone accessions so this list
may not be complete
cDNA Clones ( 102 )
Please Note
This section lists
cDNAs and ESTs that fall within the genomic extent
of the gene model, which may include cDNAs and ESTs
of genes within introns, or of overlapping genes.
Please see GBrowse for alignment of the cDNAs and ESTs
to the gene model.
The nomenclature of genes encoding subunits of the 26S proteasome of D. melanogaster have been standardized according to FBrf0215459. These symbols/names largely follow those used already in FlyBase, and largely mirror fly community usage. HOWEVER, note that at least one other nomenclature system exists that is followed by the HUGO Gene Nomenclature Committee (HGNC), for example, with the unfortunate result that several D. melanogaster genes have shared synonyms.
FlyBase curator comment: FBrf0044478 showed that lesions in the gene corresponding to the CG10484 annotation reduce the activity of the A2 component of phenol oxidase originally described in FBrf0017315, while the A1 and A3 phenol oxidase components originally described in FBrf0017315 are unaffected in these mutant alleles. Thus FBrf0044478 states that the mutants probably identify a structural locus for the A2 phenol oxidase component and designated this locus "Diphenol oxidase-A2, Dox-A2". However, cloning of the gene in FBrf0054017 revealed that the encoded protein had no homology to non-insect phenol oxidases at that time, but instead shows high amino acid identity (57% over the entire length of the D. melanogaster protein) to the mouse Psmd3 gene (accession number MGI:48687), which encodes a proteasome subunit. FBrf0128494 showed that the protein encoded by the CG10484 annotation is a subunit of the regulatory complex of the 26S proteasome in D. melanogaster. FBrf0058767 suggests that the A2 component of phenol oxidase seen in FBrf0017315 could have been an artificial derivative produced from either the A1 or A3 components by the activity of endogenous proteases during extraction, since protease inhibitors were not used in sample preparation (the A2 phenol oxidase component was not detected in FBrf0058767 where serine proteases inhibitors were present during sample preparation). Alternatively, FBrf0027144 shows that the speck (sp) mutants have a marked decreased in the amount of the A2 component of phenol oxidase, and thus FBrf0044480 notes that the A2 component may be a dimer of two non-identical subunits coded for by "Dox-A2" and sp. Given the uncertainty over whether the gene corresponding to the CG10484 annotation does encode a structural locus for the A2 component of phenol oxidase, but the good evidence that it is a proteasome subunit, the gene has been renamed to "Rpn3, Regulatory particle non-ATPase 3" following the nomenclature used in FBrf0152082, which uses the nomenclature used for S. cerevisiae proteasome regulatory particle subunits described in PubMed:9697412. In addition, the annotation corresponding to the gene has been renamed from CG10484 to CG42641 in release 5.22 of the genome annotation.
The "Dox-A2" locus may encode a structural locus for the A2 component of diphenol oxidase. The speck (sp) locus may also be a structural gene for the A2 component (FBrf0027144), so the A2 component may be a dimer of two non-identical subunits.
Mutations at the Dox-A2 locus alter only the activity of the A2 component of phenol oxidase, thus Dox-A2 probably identifies a structural locus for the A2 component.
In a sample of 79 genes with multiple introns, 33 showed significant heterogeneity in G+C content among introns of the same gene and significant positive correspondence between the intron and the third codon position G+C content within genes. These results are consistent with selection adding against preferred codons at the start of genes.