The gene prophenol oxidase A1 is referred to in FlyBase by the symbol Dmel\proPO-A1 (CG42639, FBgn0261362). It is a protein_coding_gene from Drosophila melanogaster. There is experimental evidence that it has the molecular function: L-DOPA monooxygenase activity; catechol oxidase activity; dopamine monooxygenase activity; monophenol monooxygenase activity. It is reported to be involved in the biological process: dopamine metabolic process. 7 alleles are reported. No phenotypic data is available. It has one annotated transcript and one annotated polypeptide. Protein features are: Hemocyanin, C-terminal; Hemocyanin, N-terminal; Hemocyanin/hexamerin; Hemocyanin/hexamerin middle domain; Immunoglobulin E-set; Tyrosinase; Uncharacterised domain, di-copper centre. Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of high expression to a trough of very low expression. Peak expression observed within 06-18 hour embryonic stages, during late larval stages. Summary of FlyAtlas Anatomical Expression Data: Expression at high levels in the following post-embryonic organs or tissues: adult heart, larval/adult carcass. Expression at moderate levels in the following post-embryonic organs or tissues: adult head, adult brain, larval trachea. Comments on Affy2 ProbeSet: ProbeSet 1635494_at completely aligns to an exonic region of the only FlyBase-annotated transcript isoform of proPO-A1. Gene sequence location is 2R:13774725..13777478.
User Contributed Data
Phenotypic Description from the Red Book (Lindsley
& Zimm 1992)
Gene/Allele symbols may differ
from current usage
Dox-A1: Diphenol oxidase A1 subunit
Enzyme detectable in embryos at ten hours and
remains throughout development and adult life. A1 band more
intense than those of subunits A2 and A3.
Recent Updates
Description
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FB2013_03
FB2013_02
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Summary of FlyAtlas Anatomical Expression Data: Expression at high levels in the following post-embryonic organs or tissues: adult heart, larval/adult carcass. Expression at moderate levels in the following post-embryonic organs or tissues: adult head, adult brain, larval trachea.
[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
16.975
Larval Midgut
13.3
Larval Hindgut
75.8
Larval Malpighian Tubules
25.1
Larval Fat Body
96.4
Larval Salivary Gland
15.3
Larval Trachea
321.05
Larval Carcass
646.625
Adult Head
438.5
Adult Eye
57.3
Adult Brain
166.1
Adult Thoracic-Abdominal Ganglion
89.8
Adult Crop
29.8
Adult Midgut
2.4
Adult Hindgut
6.9
Adult Malpighian Tubules
12.5
Adult Fat Body
69.6
Adult Salivary Gland
13.9
Adult Heart
1904.875
Adult VirginFemale Spermatheca
39.5
Adult InseminatedFemale Spermatheca
17.6
Adult Ovary
2.9
Adult Testis
78.1
Adult Male Accessory Gland
11.6
Adult Carcass
545.6
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
16.975
Larval Midgut
13.3
Larval Hindgut
75.8
Larval Malpighian Tubules
25.1
Larval Fat Body
96.4
Larval Salivary Gland
15.3
Larval Trachea
321.05
Larval Carcass
(646.625)
Adult Head
438.5
Adult Eye
57.3
Adult Brain
166.1
Adult Thoracic-Abdominal Ganglion
89.8
Adult Crop
29.8
Adult Midgut
2.4
Adult Hindgut
6.9
Adult Malpighian Tubules
12.5
Adult Fat Body
69.6
Adult Salivary Gland
13.9
Adult Heart
(1904.875)
Adult VirginFemale Spermatheca
39.5
Adult InseminatedFemale Spermatheca
17.6
Adult Ovary
2.9
Adult Testis
78.1
Adult Male Accessory Gland
11.6
Adult Carcass
(545.6)
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
16.975
Larval Midgut
13.3
Larval Hindgut
75.8
Larval Malpighian Tubules
25.1
Larval Fat Body
96.4
Larval Salivary Gland
15.3
Larval Trachea
321.05
Larval Carcass
646.625
Adult Head
438.5
Adult Eye
57.3
Adult Brain
166.1
Adult Thoracic-Abdominal Ganglion
89.8
Adult Crop
29.8
Adult Midgut
2.4
Adult Hindgut
6.9
Adult Malpighian Tubules
12.5
Adult Fat Body
69.6
Adult Salivary Gland
13.9
Adult Heart
(1904.875)
Adult VirginFemale Spermatheca
39.5
Adult InseminatedFemale Spermatheca
17.6
Adult Ovary
2.9
Adult Testis
78.1
Adult Male Accessory Gland
11.6
Adult Carcass
545.6
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
16.975
Larval Midgut
13.3
Larval Hindgut
75.8
Larval Malpighian Tubules
25.1
Larval Fat Body
96.4
Larval Salivary Gland
15.3
Larval Trachea
321.05
Larval Carcass
646.625
Adult Head
438.5
Adult Eye
57.3
Adult Brain
166.1
Adult Thoracic-Abdominal Ganglion
89.8
Adult Crop
29.8
Adult Midgut
2.4
Adult Hindgut
6.9
Adult Malpighian Tubules
12.5
Adult Fat Body
69.6
Adult Salivary Gland
13.9
Adult Heart
1904.875
Adult VirginFemale Spermatheca
39.5
Adult InseminatedFemale Spermatheca
17.6
Adult Ovary
2.9
Adult Testis
78.1
Adult Male Accessory Gland
11.6
Adult Carcass
545.6
Expression Level Scale
Very high
log, scaled to maximum expression level
Tissue
Expression Level
Larval Central Nervous System
16.975
Larval Midgut
13.3
Larval Hindgut
75.8
Larval Malpighian Tubules
25.1
Larval Fat Body
96.4
Larval Salivary Gland
15.3
Larval Trachea
321.05
Larval Carcass
646.625
Adult Head
438.5
Adult Eye
57.3
Adult Brain
166.1
Adult Thoracic-Abdominal Ganglion
89.8
Adult Crop
29.8
Adult Midgut
2.4
Adult Hindgut
6.9
Adult Malpighian Tubules
12.5
Adult Fat Body
69.6
Adult Salivary Gland
13.9
Adult Heart
1904.875
Adult VirginFemale Spermatheca
39.5
Adult InseminatedFemale Spermatheca
17.6
Adult Ovary
2.9
Adult Testis
78.1
Adult Male Accessory Gland
11.6
Adult Carcass
545.6
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
16.975
Larval Midgut
13.3
Larval Hindgut
75.8
Larval Malpighian Tubules
25.1
Larval Fat Body
96.4
Larval Salivary Gland
15.3
Larval Trachea
321.05
Larval Carcass
646.625
Adult Head
438.5
Adult Eye
57.3
Adult Brain
166.1
Adult Thoracic-Abdominal Ganglion
89.8
Adult Crop
29.8
Adult Midgut
2.4
Adult Hindgut
6.9
Adult Malpighian Tubules
12.5
Adult Fat Body
69.6
Adult Salivary Gland
13.9
Adult Heart
(1904.875)
Adult VirginFemale Spermatheca
39.5
Adult InseminatedFemale Spermatheca
17.6
Adult Ovary
2.9
Adult Testis
78.1
Adult Male Accessory Gland
11.6
Adult Carcass
545.6
Expression Level Scale
None
Low
Moderate
High
log, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
16.975
Larval Midgut
13.3
Larval Hindgut
75.8
Larval Malpighian Tubules
25.1
Larval Fat Body
96.4
Larval Salivary Gland
15.3
Larval Trachea
321.05
Larval Carcass
646.625
Adult Head
438.5
Adult Eye
57.3
Adult Brain
166.1
Adult Thoracic-Abdominal Ganglion
89.8
Adult Crop
29.8
Adult Midgut
2.4
Adult Hindgut
6.9
Adult Malpighian Tubules
12.5
Adult Fat Body
69.6
Adult Salivary Gland
13.9
Adult Heart
(1904.875)
Adult VirginFemale Spermatheca
39.5
Adult InseminatedFemale Spermatheca
17.6
Adult Ovary
2.9
Adult Testis
78.1
Adult Male Accessory Gland
11.6
Adult Carcass
545.6
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
16.975
Larval Midgut
13.3
Larval Hindgut
75.8
Larval Malpighian Tubules
25.1
Larval Fat Body
96.4
Larval Salivary Gland
15.3
Larval Trachea
321.05
Larval Carcass
646.625
Adult Head
438.5
Adult Eye
57.3
Adult Brain
166.1
Adult Thoracic-Abdominal Ganglion
89.8
Adult Crop
29.8
Adult Midgut
2.4
Adult Hindgut
6.9
Adult Malpighian Tubules
12.5
Adult Fat Body
69.6
Adult Salivary Gland
13.9
Adult Heart
1904.875
Adult VirginFemale Spermatheca
39.5
Adult InseminatedFemale Spermatheca
17.6
Adult Ovary
2.9
Adult Testis
78.1
Adult Male Accessory Gland
11.6
Adult Carcass
545.6
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 high expression to a trough of very low expression. Peak expression observed within 06-18 hour embryonic stages, during late larval stages.
[download data (TSV)]
Please Note FlyBase no
longer curates genomic clone accessions so this list
may not be complete
cDNA Clones ( 154 )
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.
FlyBase curator comment: The Black cells (Bc) mutation had incorrectly been merged with the gene corresponding to the CG5779 annotation in FlyBase (this gene encodes the A1 component of phenol oxidase originally described in FBrf0017315) under the single gene record FBgn0000165. The confusion probably arose because phenol oxidase activity is reduced in Bc heterozygous larval cell-free extracts and undetectable in homozygous larval cell-free extracts and because the Bc mutation and the gene corresponding to the CG5779 annotation map to the same location (2-80.6). FBrf0035582 suggests that the primary defect in Bc mutants involves the loss of the physical barrier between phenol oxidase and its substrate in the crystal cells, and that the Bc[+] product is required for binding the substrate in the paracrystalline structures of the crystal cells so that it is inaccessible to the phenol oxidase enzyme (rather than Bc directly encoding a phenol oxidase). The Bc mutant locus and the gene corresponding to the CG5779 annotation have thus been split into two separate genes in FlyBase (release FB_2009_09). The gene corresponding to the CG5779 annotation has been called both "Dox-A1, Diphenol oxidase A1 subunit" and "Mox, Monophenol oxidase" in the literature. The gene product has been shown to have both monophenol oxidase and diphenol oxidase activity (FBrf0058767). To avoid confusion, the name used for this gene in FlyBase is now "proPO-A1, prophenol oxidase A1" to indicate that the CG5779 annotation encodes the structural locus of the A1 component of phenol oxidase originally described in FBrf0017315, which is produced as a proenzyme. The symbol of the annotation has also been renamed from CG5779 to CG42639 in release 5.22 of the genome annotation to try to avoid confusion. In addition, the "Phox, Phenol oxidase" gene originally described in FBrf0034818 had been merged with the proPO-A1 gene (and thus with the Black cells (Bc) mutation) in FlyBase. This is probably because in FBrf0064348 it is suggested that Phox may be the same locus as proPO-A1, since it maps to the same location and both proPO-A1 and Phox show monophenol oxidase activity. However, FBrf0036109 determined the molecular weight of Phox to be 54kD, which differs from the weight reported for proPO-A1 in FBrf0027149. Thus the "Phox, Phenol oxidase" gene originally described in FBrf0034818 has also been split out into a separate gene in its own right in FlyBase (release FB_2009_09).
FlyBase curator comment: the gene referred to as "Black cells" in FBrf0209379 does not correspond to the Bc mutation, but in fact corresponds to proPO-A1 (FBgn0261362).
FlyBase curator comment: the gene referred to as "Black cells" in FBrf0207779 does not correspond to the Bc mutation, but in fact corresponds to proPO-A1 (FBgn0261362) by BLAST of the primer sequences given in the paper. The confusion probably arose due to errors in FlyBase prior to release FB_2009_09 in the representation of D.melanogaster phenol oxidase genes (see FBrf0208743).
FlyBase curator comment: the gene referred to as "Bc, Black cells" in FBrf0201838 does not correspond to the Bc mutation, but in fact corresponds to proPO-A1 (FBgn0261362) by BLAST of the PCR primer sequences given in the paper. The confusion probably arose due to errors in FlyBase prior to release FB_2009_09 in the representation of D.melanogaster phenol oxidase genes (see FBrf0208743).
FlyBase curator comment: the gene referred to as "Black cells" in FBrf0167944 does not correspond to the Bc mutation, but in fact corresponds to proPO-A1 (FBgn0261362) from the Bloomington stock used. The confusion probably arose due to errors in FlyBase prior to release FB_2009_09 in the representation of D.melanogaster phenol oxidase genes (see FBrf0208743).
FlyBase curator comment: the gene referred to as "Bc, Black cells" in FBrf0167995 does not correspond to the Bc mutation, but in fact corresponds to proPO-A1 (FBgn0261362) by BLAST of the primer sequence given in the paper for cDNA generation. The confusion probably arose due to errors in FlyBase prior to release FB_2009_09 in the representation of D.melanogaster phenol oxidase genes (see FBrf0208743).
Males have a minimum level of phenol oxidase activity that protects them from mechanical damage of cuticle or toxic effects. Females have high levels of phenol oxidase, may be caused by their reproductive function.