The gene α-Tubulin at 84B is referred to in FlyBase by the symbol Dmel\αTub84B (CG1913, FBgn0003884). It is a protein_coding_gene from Drosophila melanogaster. Based on sequence similarity, it is predicted to have molecular function: structural constituent of cytoskeleton. There is experimental evidence that it is involved in the biological process: mitotic spindle assembly checkpoint; cellular process; mitotic spindle organization; antimicrobial humoral response. 40 alleles are reported. The phenotypes of these alleles are annotated with: spermatid; mesothoracic tergum. It has one annotated transcript and one annotated polypeptide. Protein features are: Alpha tubulin; Tubulin; Tubulin, C-terminal; Tubulin, conserved site; Tubulin/FtsZ, 2-layer sandwich domain; Tubulin/FtsZ, C-terminal; Tubulin/FtsZ, GTPase domain. Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of extremely high expression to a trough of very high expression. Peak expression observed within 00-18 hour embryonic stages, at stages throughout the larval period, at stages throughout the pupal period. Summary of FlyAtlas Anatomical Expression Data: High levels of expression observed in all larval and adult organs/tissues. Expression at high levels in the following post-embryonic organs or tissues: adult head, adult eye, larval/adult central nervous system, adult crop, larval/adult midgut, larval/adult hindgut, larval/adult Malpighian tubules, adult heart, larval/adult fat body, larval/adult salivary gland, larval trachea, adult female reproductive system, adult male reproductive system, larval/adult carcass. Comments on Affy2 ProbeSet: ProbeSet 1623580_at completely aligns to an exonic region of the only FlyBase-annotated transcript isoform of alphaTub84B. Gene sequence location is 3R:2912321..2914561.
User Contributed Data
Phenotypic Description from the Red Book (Lindsley
& Zimm 1992)
Gene/Allele symbols may differ
from current usage
αTub84B (α1t)
A structural gene for α-Tubulin; present in one copy
per haploid genome; transcribed into mRNA in the oocyte and
the embryo, reaching a maximum concentration 6-9 hr after the
egg is laid (Kalfayan and Wensink, 1982). A variety of post-translational modifications of αTub84b protein found in all
tissues, some of which are tissue-specific (Matthews et al.,
1989). The gene appears to be constitutively expressed, its
functions being common to most cells; the resulting tubulins
are very similar to those of other animal species (Theurkauf
et al., 1986). Mutations in αTub84B have been induced as
lethals over Df(3R)Scx2. Alleles αTub84B1 and αTub84B3 produce
proteins that are electrophoretic variants of the wild-type
tubulin. Based on the extent of lethality and sterility found
in interallelic heterozygotes and in heterozygotes over wild
type, the severity of αTub84B alleles can be ordered as
follows: αTub84B6 < αTub84B1 < αTub84B2 < αTub84B4 < αTub84B5
= αTub84B3 (Matthews and Kaufman, 1987). Maternal-effect as
well as zygotic lethality is shown by the more severe alleles.
In the less severe hypomorphic alleles, heterozygotes die late
in pupal life or early in adult life, the adults showing head,
thoracic, or abdominal defects, bristle abnormalities, leg
tremors, and sterility (Matthews and Kaufman, 1987).
Recent Updates
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FB2013_03
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The αTub84Btranscript is expressed at all stages of development, with highest levelsdetected betweeen 0 and 6 hours of embryonic development, and high levelsbetween 9 and 18 hours of embryonic development and the first and second larvalinstars.
To compare synthesis and accumulation of α-tubulin proteins, 35S</up>methionine radiolabeled tissues were subjected to Western analysis using monoclonal anti-α-tubulin antibody. The predominant α-tubulin protein in all tissues and stages examined is αTub84B protein. The protein did not accumulate in the adult head.
Summary of FlyAtlas Anatomical Expression Data: High levels of expression observed in all larval and adult organs/tissues. Expression at high levels in the following post-embryonic organs or tissues: adult head, adult eye, larval/adult central nervous system, adult crop, larval/adult midgut, larval/adult hindgut, larval/adult Malpighian tubules, adult heart, larval/adult fat body, larval/adult salivary gland, larval trachea, adult female reproductive system, adult male reproductive system, larval/adult carcass.
[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
2890.375
Larval Midgut
5886.3
Larval Hindgut
4908.8
Larval Malpighian Tubules
3259.4
Larval Fat Body
3469.2
Larval Salivary Gland
6429.8
Larval Trachea
4580.725
Larval Carcass
4742.625
Adult Head
2444.9
Adult Eye
2302.8
Adult Brain
2669.6
Adult Thoracic-Abdominal Ganglion
3498
Adult Crop
2928.8
Adult Midgut
2406.8
Adult Hindgut
2897.4
Adult Malpighian Tubules
2740.5
Adult Fat Body
2723.8
Adult Salivary Gland
2046.3
Adult Heart
1328.55
Adult VirginFemale Spermatheca
3066
Adult InseminatedFemale Spermatheca
3298
Adult Ovary
2546.8
Adult Testis
2961
Adult Male Accessory Gland
2686.4
Adult Carcass
2179.1
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
(2890.375)
Larval Midgut
(5886.3)
Larval Hindgut
(4908.8)
Larval Malpighian Tubules
(3259.4)
Larval Fat Body
(3469.2)
Larval Salivary Gland
(6429.8)
Larval Trachea
(4580.725)
Larval Carcass
(4742.625)
Adult Head
(2444.9)
Adult Eye
(2302.8)
Adult Brain
(2669.6)
Adult Thoracic-Abdominal Ganglion
(3498)
Adult Crop
(2928.8)
Adult Midgut
(2406.8)
Adult Hindgut
(2897.4)
Adult Malpighian Tubules
(2740.5)
Adult Fat Body
(2723.8)
Adult Salivary Gland
(2046.3)
Adult Heart
(1328.55)
Adult VirginFemale Spermatheca
(3066)
Adult InseminatedFemale Spermatheca
(3298)
Adult Ovary
(2546.8)
Adult Testis
(2961)
Adult Male Accessory Gland
(2686.4)
Adult Carcass
(2179.1)
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
(2890.375)
Larval Midgut
(5886.3)
Larval Hindgut
(4908.8)
Larval Malpighian Tubules
(3259.4)
Larval Fat Body
(3469.2)
Larval Salivary Gland
(6429.8)
Larval Trachea
(4580.725)
Larval Carcass
(4742.625)
Adult Head
(2444.9)
Adult Eye
(2302.8)
Adult Brain
(2669.6)
Adult Thoracic-Abdominal Ganglion
(3498)
Adult Crop
(2928.8)
Adult Midgut
(2406.8)
Adult Hindgut
(2897.4)
Adult Malpighian Tubules
(2740.5)
Adult Fat Body
(2723.8)
Adult Salivary Gland
(2046.3)
Adult Heart
(1328.55)
Adult VirginFemale Spermatheca
(3066)
Adult InseminatedFemale Spermatheca
(3298)
Adult Ovary
(2546.8)
Adult Testis
(2961)
Adult Male Accessory Gland
(2686.4)
Adult Carcass
(2179.1)
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
2890.375
Larval Midgut
5886.3
Larval Hindgut
4908.8
Larval Malpighian Tubules
3259.4
Larval Fat Body
3469.2
Larval Salivary Gland
6429.8
Larval Trachea
4580.725
Larval Carcass
4742.625
Adult Head
2444.9
Adult Eye
2302.8
Adult Brain
2669.6
Adult Thoracic-Abdominal Ganglion
3498
Adult Crop
2928.8
Adult Midgut
2406.8
Adult Hindgut
2897.4
Adult Malpighian Tubules
2740.5
Adult Fat Body
2723.8
Adult Salivary Gland
2046.3
Adult Heart
1328.55
Adult VirginFemale Spermatheca
3066
Adult InseminatedFemale Spermatheca
3298
Adult Ovary
2546.8
Adult Testis
2961
Adult Male Accessory Gland
2686.4
Adult Carcass
2179.1
Expression Level Scale
Very high
log, scaled to maximum expression level
Tissue
Expression Level
Larval Central Nervous System
2890.375
Larval Midgut
5886.3
Larval Hindgut
4908.8
Larval Malpighian Tubules
3259.4
Larval Fat Body
3469.2
Larval Salivary Gland
6429.8
Larval Trachea
4580.725
Larval Carcass
4742.625
Adult Head
2444.9
Adult Eye
2302.8
Adult Brain
2669.6
Adult Thoracic-Abdominal Ganglion
3498
Adult Crop
2928.8
Adult Midgut
2406.8
Adult Hindgut
2897.4
Adult Malpighian Tubules
2740.5
Adult Fat Body
2723.8
Adult Salivary Gland
2046.3
Adult Heart
1328.55
Adult VirginFemale Spermatheca
3066
Adult InseminatedFemale Spermatheca
3298
Adult Ovary
2546.8
Adult Testis
2961
Adult Male Accessory Gland
2686.4
Adult Carcass
2179.1
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
(2890.375)
Larval Midgut
(5886.3)
Larval Hindgut
(4908.8)
Larval Malpighian Tubules
(3259.4)
Larval Fat Body
(3469.2)
Larval Salivary Gland
(6429.8)
Larval Trachea
(4580.725)
Larval Carcass
(4742.625)
Adult Head
(2444.9)
Adult Eye
(2302.8)
Adult Brain
(2669.6)
Adult Thoracic-Abdominal Ganglion
(3498)
Adult Crop
(2928.8)
Adult Midgut
(2406.8)
Adult Hindgut
(2897.4)
Adult Malpighian Tubules
(2740.5)
Adult Fat Body
(2723.8)
Adult Salivary Gland
(2046.3)
Adult Heart
(1328.55)
Adult VirginFemale Spermatheca
(3066)
Adult InseminatedFemale Spermatheca
(3298)
Adult Ovary
(2546.8)
Adult Testis
(2961)
Adult Male Accessory Gland
(2686.4)
Adult Carcass
(2179.1)
Expression Level Scale
None
Low
Moderate
High
log, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
(2890.375)
Larval Midgut
(5886.3)
Larval Hindgut
(4908.8)
Larval Malpighian Tubules
(3259.4)
Larval Fat Body
(3469.2)
Larval Salivary Gland
(6429.8)
Larval Trachea
(4580.725)
Larval Carcass
(4742.625)
Adult Head
(2444.9)
Adult Eye
(2302.8)
Adult Brain
(2669.6)
Adult Thoracic-Abdominal Ganglion
(3498)
Adult Crop
(2928.8)
Adult Midgut
(2406.8)
Adult Hindgut
(2897.4)
Adult Malpighian Tubules
(2740.5)
Adult Fat Body
(2723.8)
Adult Salivary Gland
(2046.3)
Adult Heart
1328.55
Adult VirginFemale Spermatheca
(3066)
Adult InseminatedFemale Spermatheca
(3298)
Adult Ovary
(2546.8)
Adult Testis
(2961)
Adult Male Accessory Gland
(2686.4)
Adult Carcass
(2179.1)
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
2890.375
Larval Midgut
5886.3
Larval Hindgut
4908.8
Larval Malpighian Tubules
3259.4
Larval Fat Body
3469.2
Larval Salivary Gland
6429.8
Larval Trachea
4580.725
Larval Carcass
4742.625
Adult Head
2444.9
Adult Eye
2302.8
Adult Brain
2669.6
Adult Thoracic-Abdominal Ganglion
3498
Adult Crop
2928.8
Adult Midgut
2406.8
Adult Hindgut
2897.4
Adult Malpighian Tubules
2740.5
Adult Fat Body
2723.8
Adult Salivary Gland
2046.3
Adult Heart
1328.55
Adult VirginFemale Spermatheca
3066
Adult InseminatedFemale Spermatheca
3298
Adult Ovary
2546.8
Adult Testis
2961
Adult Male Accessory Gland
2686.4
Adult Carcass
2179.1
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 extremely high expression to a trough of very high expression. Peak expression observed within 00-18 hour embryonic stages, at stages throughout the larval period, at stages throughout the pupal period.
[download data (TSV)]