The gene Myb oncogene-like is referred to in FlyBase by the symbol Dmel\Myb (CG9045, FBgn0002914). It is a protein_coding_gene from Drosophila melanogaster. There is experimental evidence that it has the molecular function: DNA binding. There is experimental evidence for 18 unique biological process terms, many of which group under: cellular component organization or biogenesis; cell cycle; biological regulation; organelle organization; cell cycle process; positive regulation of biological process; cell proliferation; positive regulation of cell proliferation; cytokinesis; regulation of RNA metabolic process; single-organism developmental process; regulation of cellular component organization. 73 alleles are reported. The phenotypes of these alleles are annotated with: cell cycle; organ system; adult segment; organ system subdivision; imaginal precursor; thoracic segment; external compound sense organ; cell cycle process; adult; nuclear part; embryonic/larval hemocoel; cellular component organization or biogenesis. It has 5 annotated transcripts and 5 annotated polypeptides. Protein features are: C-myb, C-terminal; Homeodomain-like; Myb domain; Myb-like domain; SANT/Myb domain. Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of high expression to a trough of moderate expression. Peak expression observed within 00-18 hour embryonic stages, during early pupal stages. Summary of FlyAtlas Anatomical Expression Data: Nearly all larval and adult tissues/organs expressed at moderate levels. Expression at high levels in the following post-embryonic organs or tissues: larval central nervous system. Expression at moderate levels in the following post-embryonic organs or tissues: adult head, adult eye, 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 1627567_at completely aligns to an exonic region common to each of the 5 FlyBase-annotated transcript isoforms of Myb. Gene sequence location is X:15748865..15751854.
User Contributed Data
External Summaries
Phenotypic Description from the Red Book (Lindsley
& Zimm 1992)
Gene/Allele symbols may differ
from current usage
Myb: Myb proto-oncongene sequence
Considered to be the Drosophila homologue of avian
c-myb. Open reading frame identified to date encodes a
polypeptide exhibiting 73% homology with chicken c-myb protein.
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The 3.2 kb Myb transcript is detected throughout development. Myb transcript is detected mainly in proliferating tissues, though expression is seen at lower levels in some post-mitotic tissues. Expression is uniform and high in preblastoderm embryos, and continues to be high during cellular blastoderm formation and germ band extension. Message is less uniform in contracted germ band embryos, with no expression seen in the amnioserosa, and low expression in the salivary glands. Later in embryogenesis, Myb transcript is high only in the CNS. In climbing third instar larvae, tissues contributing to the adult express Myb at high levels: imaginal disc, brain, ventral ganglion, testes, ovaries, and nests of imaginal cells in the gut. Expression in these tissues continues in the early pupa, with additional expression detected in histoblasts and epithelial cells of the developing imaginal gut. Myb levels decline in everted imaginal tissues. Ovary, testis, and neural tissue continue to express Myb transcript through pupal development. Myb is detected at low levels in the brain and thoracic ganglia of adults, and expression is high in adult testes and ovaries.
Summary of FlyAtlas Anatomical Expression Data: Nearly all larval and adult tissues/organs expressed at moderate levels. Expression at high levels in the following post-embryonic organs or tissues: larval central nervous system. Expression at moderate levels in the following post-embryonic organs or tissues: adult head, adult eye, 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
576.625
Larval Midgut
120.7
Larval Hindgut
167.9
Larval Malpighian Tubules
242.9
Larval Fat Body
163.9
Larval Salivary Gland
155
Larval Trachea
252.825
Larval Carcass
175.375
Adult Head
197.5
Adult Eye
193.025
Adult Brain
276
Adult Thoracic-Abdominal Ganglion
246.8
Adult Crop
240.3
Adult Midgut
158.7
Adult Hindgut
163.5
Adult Malpighian Tubules
148.1
Adult Fat Body
112.8
Adult Salivary Gland
172.4
Adult Heart
104.85
Adult VirginFemale Spermatheca
99.5
Adult InseminatedFemale Spermatheca
109.5
Adult Ovary
340.2
Adult Testis
235.9
Adult Male Accessory Gland
178
Adult Carcass
117.8
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
(576.625)
Larval Midgut
120.7
Larval Hindgut
167.9
Larval Malpighian Tubules
242.9
Larval Fat Body
163.9
Larval Salivary Gland
155
Larval Trachea
252.825
Larval Carcass
175.375
Adult Head
197.5
Adult Eye
193.025
Adult Brain
276
Adult Thoracic-Abdominal Ganglion
246.8
Adult Crop
240.3
Adult Midgut
158.7
Adult Hindgut
163.5
Adult Malpighian Tubules
148.1
Adult Fat Body
112.8
Adult Salivary Gland
172.4
Adult Heart
104.85
Adult VirginFemale Spermatheca
99.5
Adult InseminatedFemale Spermatheca
109.5
Adult Ovary
340.2
Adult Testis
235.9
Adult Male Accessory Gland
178
Adult Carcass
117.8
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
576.625
Larval Midgut
120.7
Larval Hindgut
167.9
Larval Malpighian Tubules
242.9
Larval Fat Body
163.9
Larval Salivary Gland
155
Larval Trachea
252.825
Larval Carcass
175.375
Adult Head
197.5
Adult Eye
193.025
Adult Brain
276
Adult Thoracic-Abdominal Ganglion
246.8
Adult Crop
240.3
Adult Midgut
158.7
Adult Hindgut
163.5
Adult Malpighian Tubules
148.1
Adult Fat Body
112.8
Adult Salivary Gland
172.4
Adult Heart
104.85
Adult VirginFemale Spermatheca
99.5
Adult InseminatedFemale Spermatheca
109.5
Adult Ovary
340.2
Adult Testis
235.9
Adult Male Accessory Gland
178
Adult Carcass
117.8
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
576.625
Larval Midgut
120.7
Larval Hindgut
167.9
Larval Malpighian Tubules
242.9
Larval Fat Body
163.9
Larval Salivary Gland
155
Larval Trachea
252.825
Larval Carcass
175.375
Adult Head
197.5
Adult Eye
193.025
Adult Brain
276
Adult Thoracic-Abdominal Ganglion
246.8
Adult Crop
240.3
Adult Midgut
158.7
Adult Hindgut
163.5
Adult Malpighian Tubules
148.1
Adult Fat Body
112.8
Adult Salivary Gland
172.4
Adult Heart
104.85
Adult VirginFemale Spermatheca
99.5
Adult InseminatedFemale Spermatheca
109.5
Adult Ovary
340.2
Adult Testis
235.9
Adult Male Accessory Gland
178
Adult Carcass
117.8
Expression Level Scale
Very high
log, scaled to maximum expression level
Tissue
Expression Level
Larval Central Nervous System
576.625
Larval Midgut
120.7
Larval Hindgut
167.9
Larval Malpighian Tubules
242.9
Larval Fat Body
163.9
Larval Salivary Gland
155
Larval Trachea
252.825
Larval Carcass
175.375
Adult Head
197.5
Adult Eye
193.025
Adult Brain
276
Adult Thoracic-Abdominal Ganglion
246.8
Adult Crop
240.3
Adult Midgut
158.7
Adult Hindgut
163.5
Adult Malpighian Tubules
148.1
Adult Fat Body
112.8
Adult Salivary Gland
172.4
Adult Heart
104.85
Adult VirginFemale Spermatheca
99.5
Adult InseminatedFemale Spermatheca
109.5
Adult Ovary
340.2
Adult Testis
235.9
Adult Male Accessory Gland
178
Adult Carcass
117.8
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
576.625
Larval Midgut
120.7
Larval Hindgut
167.9
Larval Malpighian Tubules
242.9
Larval Fat Body
163.9
Larval Salivary Gland
155
Larval Trachea
252.825
Larval Carcass
175.375
Adult Head
197.5
Adult Eye
193.025
Adult Brain
276
Adult Thoracic-Abdominal Ganglion
246.8
Adult Crop
240.3
Adult Midgut
158.7
Adult Hindgut
163.5
Adult Malpighian Tubules
148.1
Adult Fat Body
112.8
Adult Salivary Gland
172.4
Adult Heart
104.85
Adult VirginFemale Spermatheca
99.5
Adult InseminatedFemale Spermatheca
109.5
Adult Ovary
340.2
Adult Testis
235.9
Adult Male Accessory Gland
178
Adult Carcass
117.8
Expression Level Scale
None
Low
Moderate
High
log, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
576.625
Larval Midgut
120.7
Larval Hindgut
167.9
Larval Malpighian Tubules
242.9
Larval Fat Body
163.9
Larval Salivary Gland
155
Larval Trachea
252.825
Larval Carcass
175.375
Adult Head
197.5
Adult Eye
193.025
Adult Brain
276
Adult Thoracic-Abdominal Ganglion
246.8
Adult Crop
240.3
Adult Midgut
158.7
Adult Hindgut
163.5
Adult Malpighian Tubules
148.1
Adult Fat Body
112.8
Adult Salivary Gland
172.4
Adult Heart
104.85
Adult VirginFemale Spermatheca
99.5
Adult InseminatedFemale Spermatheca
109.5
Adult Ovary
340.2
Adult Testis
235.9
Adult Male Accessory Gland
178
Adult Carcass
117.8
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
576.625
Larval Midgut
120.7
Larval Hindgut
167.9
Larval Malpighian Tubules
242.9
Larval Fat Body
163.9
Larval Salivary Gland
155
Larval Trachea
252.825
Larval Carcass
175.375
Adult Head
197.5
Adult Eye
193.025
Adult Brain
276
Adult Thoracic-Abdominal Ganglion
246.8
Adult Crop
240.3
Adult Midgut
158.7
Adult Hindgut
163.5
Adult Malpighian Tubules
148.1
Adult Fat Body
112.8
Adult Salivary Gland
172.4
Adult Heart
104.85
Adult VirginFemale Spermatheca
99.5
Adult InseminatedFemale Spermatheca
109.5
Adult Ovary
340.2
Adult Testis
235.9
Adult Male Accessory Gland
178
Adult Carcass
117.8
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 moderate expression. Peak expression observed within 00-18 hour embryonic stages, during early pupal stages.
[download data (TSV)]
Please Note FlyBase no
longer curates genomic clone accessions so this list
may not be complete
cDNA Clones ( 170 )
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.
RNAi screen using dsRNA made from templates generated with primers directed against this gene results in the formation of monastral bipolar, long spindles, detachment of the spindle pole and few mitoses when assayed in S2 cells. This phenotype can be observed when the screen is performed with or without Cdc27 dsRNA.
RNAi screen using dsRNA made from templates generated with primers directed against this gene in S2 cells results in the formation of normal bipolar or occasionally multipolar spindles. Subsequently one or more of the centrosomes detech from the spindle poles and wonder toward the center of the cell. In some instances, centrosomes fuse, resulting in a monastral bipolar spindle.
In abdominal epidermal cell, Myb is required to sustain the appropriate rate of proliferation, to suppress formation of supernumerary centrosomes, and to maintain genomic integrity.
Mutant wing cells fail to complete the final mitosis in their developmental lineage and a subset of nuclei enter endoreplication cycles. The failure of mutant wing cells to complete the final cell division cycle is likely to be an immediate consequence of the deficiency in Myb function.
A series of phylogenetic analyses is performed to explore the interrelationships among 42 Myb proteins from both plants and animals - a test of the null hypothesis 'Myb proteins are a homogeneous, monophyletic, evolutionary lineage'.
Using the co-transfection assay with the nej expression plasmid results demonstrate trans-activation by Myb and functional domains of Myb involved in this activity are identified.
There is a quasihydrophobic site on the protein to which the hydrophobic probe TNS (6-p-Toluidino-2-naphthalenesulfonate) binds. This binding site is found within the vicinity of Tyr and several Trp residues.
Myb is an essential gene whose function is important during most stages of development. Aspects of the mutant phenotype implicate Myb in the control of cell division.
Myb has been cloned and sequenced. It contains two regions of homology to vertebrate myb proteins. DNA-binding experiments show that the amino-terminal proximal region of homology functions as a DNA binding domain.
Considered to be the Drosophila homologue of avian c-myb. Open reading frame identified to date encodes a polypeptide exhibiting 73% homology with chicken c-myb protein.
A machine learning approach for identifying novel cell type-specific transcriptional regulators of myogenesis. [FBrf0217716]
Chen et al., 2012, Cell Death Differ. 19(10): 1655--1663
Effectors of alcohol-induced cell killing in Drosophila. [FBrf0219410]
Lewis et al., 2012, Mol. Cell. Biol. 32(16): 3218--3227
Drosophila Lin-52 Acts in Opposition to Repressive Components of the Myb-MuvB/dREAM Complex. [FBrf0219063]
Rovani et al., 2012, Dev. Biol. 372(1): 88--102
The dREAM/Myb-MuvB complex and Grim are key regulators of the programmed death of neural precursor cells at the Drosophila posterior wing margin. [FBrf0219750]
Sim et al., 2012, Genes Dev. 26(22): 2483--2498
Epigenetic regulation of olfactory receptor gene expression by the Myb-MuvB/dREAM complex. [FBrf0220034]
Andrejka et al., 2011, Proc. Natl. Acad. Sci. U.S.A. 108(42): 17438--17443
Animal-specific C-terminal domain links myeloblastosis oncoprotein (Myb) to an ancient repressor complex. [FBrf0216444]
Davis et al., 2011, BMC Dev. Biol. 11: 66
Identification of common and cell type specific LXXLL motif EcR cofactors using a bioinformatics refined candidate RNAi screen in Drosophila melanogaster cell lines. [FBrf0216830]
Toku et al., 2011, Comput. Biol. Chem. 35(5): 282--292
Reconstruction and crosstalk of protein-protein interaction networks of Wnt and Hedgehog signaling in Drosophila melanogaster. [FBrf0216393]
Weake et al., 2011, Genes Dev. 25(14): 1499--1509
Post-transcription initiation function of the ubiquitous SAGA complex in tissue-specific gene activation. [FBrf0214372]
Zacharogianni et al., 2011, EMBO J. 30(18): 3684--3700
ERK7 is a negative regulator of protein secretion in response to amino-acid starvation by modulating Sec16 membrane association. [FBrf0215221]