The gene Odorant-binding protein 83b is referred to in FlyBase by the symbol Dmel\Obp83b (CG11422, FBgn0010403). It is a protein_coding_gene from Drosophila melanogaster. Based on sequence similarity, it is predicted to have molecular function: odorant binding. Based on sequence similarity, it is predicted to be involved in the biological process: sensory perception of chemical stimulus. 14 alleles are reported. No phenotypic data is available. It has one annotated transcript and one annotated polypeptide. Protein features are: Pheromone/general odorant binding protein; Pheromone/general odorant binding protein, PBP/GOBP, domain. Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of moderately high expression to a trough of no expression detected. Peak expression observed in adult male stages. Summary of FlyAtlas Anatomical Expression Data: Expression at high levels in the following post-embryonic organs or tissues: adult head, adult eye. Comments on Affy2 ProbeSet: ProbeSet 1638066_at completely aligns to an exonic region of the only FlyBase-annotated transcript isoform of Os-E. Gene sequence location is 3R:1801899..1802539.
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FB2013_03
FB2013_02
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Transcripts are detected in RNA from antennae but not in RNA from chemosensory depleted heads or bodies. In situ hybridization reveals that expression is limited to the ventro-lateral region of the third antennal segment, in a pattern consistent with the distribution of sensilla trichodea. In deeper sections, expression is observed beneath sensilla trichodea sensory hairs.
Summary of FlyAtlas Anatomical Expression Data: Expression at high levels in the following post-embryonic organs or tissues: adult head, adult eye.
[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
2.125
Larval Midgut
8.2
Larval Hindgut
2
Larval Malpighian Tubules
3.1
Larval Fat Body
5.5
Larval Salivary Gland
6.1
Larval Trachea
8.825
Larval Carcass
4.625
Adult Head
3127.5
Adult Eye
608.25
Adult Brain
3.6
Adult Thoracic-Abdominal Ganglion
3.9
Adult Crop
5.5
Adult Midgut
2.7
Adult Hindgut
3.4
Adult Malpighian Tubules
1.8
Adult Fat Body
4.3
Adult Salivary Gland
12.1
Adult Heart
4.7
Adult VirginFemale Spermatheca
3.9
Adult InseminatedFemale Spermatheca
4.5
Adult Ovary
3.8
Adult Testis
6.8
Adult Male Accessory Gland
5.2
Adult Carcass
1.9
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
2.125
Larval Midgut
8.2
Larval Hindgut
2
Larval Malpighian Tubules
3.1
Larval Fat Body
5.5
Larval Salivary Gland
6.1
Larval Trachea
8.825
Larval Carcass
4.625
Adult Head
(3127.5)
Adult Eye
(608.25)
Adult Brain
3.6
Adult Thoracic-Abdominal Ganglion
3.9
Adult Crop
5.5
Adult Midgut
2.7
Adult Hindgut
3.4
Adult Malpighian Tubules
1.8
Adult Fat Body
4.3
Adult Salivary Gland
12.1
Adult Heart
4.7
Adult VirginFemale Spermatheca
3.9
Adult InseminatedFemale Spermatheca
4.5
Adult Ovary
3.8
Adult Testis
6.8
Adult Male Accessory Gland
5.2
Adult Carcass
1.9
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
2.125
Larval Midgut
8.2
Larval Hindgut
2
Larval Malpighian Tubules
3.1
Larval Fat Body
5.5
Larval Salivary Gland
6.1
Larval Trachea
8.825
Larval Carcass
4.625
Adult Head
(3127.5)
Adult Eye
608.25
Adult Brain
3.6
Adult Thoracic-Abdominal Ganglion
3.9
Adult Crop
5.5
Adult Midgut
2.7
Adult Hindgut
3.4
Adult Malpighian Tubules
1.8
Adult Fat Body
4.3
Adult Salivary Gland
12.1
Adult Heart
4.7
Adult VirginFemale Spermatheca
3.9
Adult InseminatedFemale Spermatheca
4.5
Adult Ovary
3.8
Adult Testis
6.8
Adult Male Accessory Gland
5.2
Adult Carcass
1.9
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
2.125
Larval Midgut
8.2
Larval Hindgut
2
Larval Malpighian Tubules
3.1
Larval Fat Body
5.5
Larval Salivary Gland
6.1
Larval Trachea
8.825
Larval Carcass
4.625
Adult Head
3127.5
Adult Eye
608.25
Adult Brain
3.6
Adult Thoracic-Abdominal Ganglion
3.9
Adult Crop
5.5
Adult Midgut
2.7
Adult Hindgut
3.4
Adult Malpighian Tubules
1.8
Adult Fat Body
4.3
Adult Salivary Gland
12.1
Adult Heart
4.7
Adult VirginFemale Spermatheca
3.9
Adult InseminatedFemale Spermatheca
4.5
Adult Ovary
3.8
Adult Testis
6.8
Adult Male Accessory Gland
5.2
Adult Carcass
1.9
Expression Level Scale
Very high
log, scaled to maximum expression level
Tissue
Expression Level
Larval Central Nervous System
2.125
Larval Midgut
8.2
Larval Hindgut
2
Larval Malpighian Tubules
3.1
Larval Fat Body
5.5
Larval Salivary Gland
6.1
Larval Trachea
8.825
Larval Carcass
4.625
Adult Head
3127.5
Adult Eye
608.25
Adult Brain
3.6
Adult Thoracic-Abdominal Ganglion
3.9
Adult Crop
5.5
Adult Midgut
2.7
Adult Hindgut
3.4
Adult Malpighian Tubules
1.8
Adult Fat Body
4.3
Adult Salivary Gland
12.1
Adult Heart
4.7
Adult VirginFemale Spermatheca
3.9
Adult InseminatedFemale Spermatheca
4.5
Adult Ovary
3.8
Adult Testis
6.8
Adult Male Accessory Gland
5.2
Adult Carcass
1.9
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
2.125
Larval Midgut
8.2
Larval Hindgut
2
Larval Malpighian Tubules
3.1
Larval Fat Body
5.5
Larval Salivary Gland
6.1
Larval Trachea
8.825
Larval Carcass
4.625
Adult Head
(3127.5)
Adult Eye
608.25
Adult Brain
3.6
Adult Thoracic-Abdominal Ganglion
3.9
Adult Crop
5.5
Adult Midgut
2.7
Adult Hindgut
3.4
Adult Malpighian Tubules
1.8
Adult Fat Body
4.3
Adult Salivary Gland
12.1
Adult Heart
4.7
Adult VirginFemale Spermatheca
3.9
Adult InseminatedFemale Spermatheca
4.5
Adult Ovary
3.8
Adult Testis
6.8
Adult Male Accessory Gland
5.2
Adult Carcass
1.9
Expression Level Scale
None
Low
Moderate
High
log, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
2.125
Larval Midgut
8.2
Larval Hindgut
2
Larval Malpighian Tubules
3.1
Larval Fat Body
5.5
Larval Salivary Gland
6.1
Larval Trachea
8.825
Larval Carcass
4.625
Adult Head
(3127.5)
Adult Eye
608.25
Adult Brain
3.6
Adult Thoracic-Abdominal Ganglion
3.9
Adult Crop
5.5
Adult Midgut
2.7
Adult Hindgut
3.4
Adult Malpighian Tubules
1.8
Adult Fat Body
4.3
Adult Salivary Gland
12.1
Adult Heart
4.7
Adult VirginFemale Spermatheca
3.9
Adult InseminatedFemale Spermatheca
4.5
Adult Ovary
3.8
Adult Testis
6.8
Adult Male Accessory Gland
5.2
Adult Carcass
1.9
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
2.125
Larval Midgut
8.2
Larval Hindgut
2
Larval Malpighian Tubules
3.1
Larval Fat Body
5.5
Larval Salivary Gland
6.1
Larval Trachea
8.825
Larval Carcass
4.625
Adult Head
3127.5
Adult Eye
608.25
Adult Brain
3.6
Adult Thoracic-Abdominal Ganglion
3.9
Adult Crop
5.5
Adult Midgut
2.7
Adult Hindgut
3.4
Adult Malpighian Tubules
1.8
Adult Fat Body
4.3
Adult Salivary Gland
12.1
Adult Heart
4.7
Adult VirginFemale Spermatheca
3.9
Adult InseminatedFemale Spermatheca
4.5
Adult Ovary
3.8
Adult Testis
6.8
Adult Male Accessory Gland
5.2
Adult Carcass
1.9
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 moderately high expression to a trough of no expression detected. Peak expression observed in adult male stages.
[download data (TSV)]
Please Note FlyBase no
longer curates genomic clone accessions so this list
may not be complete
cDNA Clones ( 5 )
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: 'Os-E' renamed to 'Obp83b' to rationalize the nomenclature of 'Odorant-binding protein'-encoding genes consistent with the recommendations in FBrf0151704 and FBrf0205523.
Identified as a gene with significant level of mRNA cycling as assessed by expression analysis using high density oligonucleotide arrays with probe generated from adult heads harvested over six time points over the course of a day. Shows alteration in expression in a Clk mutant background.
Os-E and Pbprp3 are located about 1kb apart and contain a similar exon-intron organisation. Expression of both proteins is restricted spatially to two distinct types of olfactory hairs located in the ventrolateral region of the antenna. Immunocytochemical EM studies reveal that all sensilla examined express both proteins, thus, an individual sensilla can contain more than one odorant-binding protein.
Immonen and Ritchie, 2012, Proc. Biol. Sci. 279(1732): 1359--1365
The genomic response to courtship song stimulation in female Drosophila melanogaster. [FBrf0217554]
Vieira and Rozas, 2011, Genome Biol. Evol. 3: 476--490
Comparative Genomics of the Odorant-Binding and Chemosensory Protein Gene Families across the Arthropoda: Origin and Evolutionary History of the Chemosensory System. [FBrf0214323]