The gene Enhancer of bithorax is referred to in FlyBase by the symbol Dmel\E(bx) (CG32346, FBgn0000541). It is a protein_coding_gene from Drosophila melanogaster. There is experimental evidence that it has the molecular function: ligand-dependent nuclear receptor binding. There is experimental evidence for 11 unique biological process terms, many of which group under: cellular component organization or biogenesis; organelle organization; chromosome organization; biological regulation; single-organism developmental process; cellular process; gene expression; cell cycle; cell fate commitment; prepupal development. 30 alleles are reported. The phenotypes of these alleles are annotated with: dendrite; polytene chromosome; mesothoracic tergum; melanotic mass. It has 9 annotated transcripts and 9 annotated polypeptides. Protein features are: AT hook, DNA-binding motif; Bromodomain; Bromodomain, conserved site; DDT domain; DDT domain superfamily; DDT domain, subgroup; Zinc finger, FYVE/PHD-type; Zinc finger, PHD-finger; Zinc finger, PHD-type; Zinc finger, PHD-type, conserved site; Zinc finger, RING/FYVE/PHD-type. 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 00-12 hour embryonic stages. Summary of FlyAtlas Anatomical Expression Data: Expression at moderate levels in the following post-embryonic organs or tissues: adult head, larval/adult central nervous system, larval salivary gland, larval trachea, adult ovary, adult testis. Comments on Affy2 ProbeSet: ProbeSet 1625243_a_at completely aligns to an exonic region of only a subset of 3 of the 5 FlyBase-annotated transcript isoforms of E(bx). Gene sequence location is 3L:233926..246912.
User Contributed Data
External Summaries
Phenotypic Description from the Red Book (Lindsley
& Zimm 1992)
Gene/Allele symbols may differ
from current usage
E(bx): Enhancer of bithorax
Enhances expression of bx34e, bx3, and Ubx/+.
Lethal homozygous. RK2.
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Summary of FlyAtlas Anatomical Expression Data: Expression at moderate levels in the following post-embryonic organs or tissues: adult head, larval/adult central nervous system, larval salivary gland, larval trachea, adult ovary, adult testis.
[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
446.075
Larval Midgut
48.2
Larval Hindgut
80.5
Larval Malpighian Tubules
54.8
Larval Fat Body
61.5
Larval Salivary Gland
118
Larval Trachea
107.525
Larval Carcass
99.875
Adult Head
101.3
Adult Eye
51.925
Adult Brain
291.6
Adult Thoracic-Abdominal Ganglion
159.1
Adult Crop
75.1
Adult Midgut
57
Adult Hindgut
64.3
Adult Malpighian Tubules
45.9
Adult Fat Body
65.7
Adult Salivary Gland
74.9
Adult Heart
37.1
Adult VirginFemale Spermatheca
54.5
Adult InseminatedFemale Spermatheca
57
Adult Ovary
458.6
Adult Testis
180.5
Adult Male Accessory Gland
82.4
Adult Carcass
53.8
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
446.075
Larval Midgut
48.2
Larval Hindgut
80.5
Larval Malpighian Tubules
54.8
Larval Fat Body
61.5
Larval Salivary Gland
118
Larval Trachea
107.525
Larval Carcass
99.875
Adult Head
101.3
Adult Eye
51.925
Adult Brain
291.6
Adult Thoracic-Abdominal Ganglion
159.1
Adult Crop
75.1
Adult Midgut
57
Adult Hindgut
64.3
Adult Malpighian Tubules
45.9
Adult Fat Body
65.7
Adult Salivary Gland
74.9
Adult Heart
37.1
Adult VirginFemale Spermatheca
54.5
Adult InseminatedFemale Spermatheca
57
Adult Ovary
458.6
Adult Testis
180.5
Adult Male Accessory Gland
82.4
Adult Carcass
53.8
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
446.075
Larval Midgut
48.2
Larval Hindgut
80.5
Larval Malpighian Tubules
54.8
Larval Fat Body
61.5
Larval Salivary Gland
118
Larval Trachea
107.525
Larval Carcass
99.875
Adult Head
101.3
Adult Eye
51.925
Adult Brain
291.6
Adult Thoracic-Abdominal Ganglion
159.1
Adult Crop
75.1
Adult Midgut
57
Adult Hindgut
64.3
Adult Malpighian Tubules
45.9
Adult Fat Body
65.7
Adult Salivary Gland
74.9
Adult Heart
37.1
Adult VirginFemale Spermatheca
54.5
Adult InseminatedFemale Spermatheca
57
Adult Ovary
458.6
Adult Testis
180.5
Adult Male Accessory Gland
82.4
Adult Carcass
53.8
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
446.075
Larval Midgut
48.2
Larval Hindgut
80.5
Larval Malpighian Tubules
54.8
Larval Fat Body
61.5
Larval Salivary Gland
118
Larval Trachea
107.525
Larval Carcass
99.875
Adult Head
101.3
Adult Eye
51.925
Adult Brain
291.6
Adult Thoracic-Abdominal Ganglion
159.1
Adult Crop
75.1
Adult Midgut
57
Adult Hindgut
64.3
Adult Malpighian Tubules
45.9
Adult Fat Body
65.7
Adult Salivary Gland
74.9
Adult Heart
37.1
Adult VirginFemale Spermatheca
54.5
Adult InseminatedFemale Spermatheca
57
Adult Ovary
458.6
Adult Testis
180.5
Adult Male Accessory Gland
82.4
Adult Carcass
53.8
Expression Level Scale
Very high
log, scaled to maximum expression level
Tissue
Expression Level
Larval Central Nervous System
446.075
Larval Midgut
48.2
Larval Hindgut
80.5
Larval Malpighian Tubules
54.8
Larval Fat Body
61.5
Larval Salivary Gland
118
Larval Trachea
107.525
Larval Carcass
99.875
Adult Head
101.3
Adult Eye
51.925
Adult Brain
291.6
Adult Thoracic-Abdominal Ganglion
159.1
Adult Crop
75.1
Adult Midgut
57
Adult Hindgut
64.3
Adult Malpighian Tubules
45.9
Adult Fat Body
65.7
Adult Salivary Gland
74.9
Adult Heart
37.1
Adult VirginFemale Spermatheca
54.5
Adult InseminatedFemale Spermatheca
57
Adult Ovary
458.6
Adult Testis
180.5
Adult Male Accessory Gland
82.4
Adult Carcass
53.8
Expression Level Scale
None
Low
Moderate
High
log, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
446.075
Larval Midgut
48.2
Larval Hindgut
80.5
Larval Malpighian Tubules
54.8
Larval Fat Body
61.5
Larval Salivary Gland
118
Larval Trachea
107.525
Larval Carcass
99.875
Adult Head
101.3
Adult Eye
51.925
Adult Brain
291.6
Adult Thoracic-Abdominal Ganglion
159.1
Adult Crop
75.1
Adult Midgut
57
Adult Hindgut
64.3
Adult Malpighian Tubules
45.9
Adult Fat Body
65.7
Adult Salivary Gland
74.9
Adult Heart
37.1
Adult VirginFemale Spermatheca
54.5
Adult InseminatedFemale Spermatheca
57
Adult Ovary
458.6
Adult Testis
180.5
Adult Male Accessory Gland
82.4
Adult Carcass
53.8
Expression Level Scale
None
Low
Moderate
High
log, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
446.075
Larval Midgut
48.2
Larval Hindgut
80.5
Larval Malpighian Tubules
54.8
Larval Fat Body
61.5
Larval Salivary Gland
118
Larval Trachea
107.525
Larval Carcass
99.875
Adult Head
101.3
Adult Eye
51.925
Adult Brain
291.6
Adult Thoracic-Abdominal Ganglion
159.1
Adult Crop
75.1
Adult Midgut
57
Adult Hindgut
64.3
Adult Malpighian Tubules
45.9
Adult Fat Body
65.7
Adult Salivary Gland
74.9
Adult Heart
37.1
Adult VirginFemale Spermatheca
54.5
Adult InseminatedFemale Spermatheca
57
Adult Ovary
458.6
Adult Testis
180.5
Adult Male Accessory Gland
82.4
Adult Carcass
53.8
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
446.075
Larval Midgut
48.2
Larval Hindgut
80.5
Larval Malpighian Tubules
54.8
Larval Fat Body
61.5
Larval Salivary Gland
118
Larval Trachea
107.525
Larval Carcass
99.875
Adult Head
101.3
Adult Eye
51.925
Adult Brain
291.6
Adult Thoracic-Abdominal Ganglion
159.1
Adult Crop
75.1
Adult Midgut
57
Adult Hindgut
64.3
Adult Malpighian Tubules
45.9
Adult Fat Body
65.7
Adult Salivary Gland
74.9
Adult Heart
37.1
Adult VirginFemale Spermatheca
54.5
Adult InseminatedFemale Spermatheca
57
Adult Ovary
458.6
Adult Testis
180.5
Adult Male Accessory Gland
82.4
Adult Carcass
53.8
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 00-12 hour embryonic stages.
[download data (TSV)]
Please Note FlyBase no
longer curates genomic clone accessions so this list
may not be complete
cDNA Clones ( 141 )
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.
dsRNA has been made from templates generated with primers directed against this gene. RNAi of E(bx) results in increased arborization of ddaD and ddaE neurons, defects in dendrite morphogenesis and reproducible defects in da dendrite development.
The NURF complex (composed of Caf1, E(bx), Iswi and Nurf-38 proteins) can remodel chromatin and stimulate transcription in vitro irrespective of the acetylation status of histones.
E(bx) is a component of the NURF complex that is both necessary and sufficient for accurate and efficient nucleosome sliding. It interacts with sequence-specific transcription factors, providing a basis for targeted recruitment of the NURF complex to specific genes.
NURF, a protein complex of four subunits Caf1, Nurf-38, E(bx) and Iswi, is able to facilitate transcription mediated by a Scer\GAL4 derivative carrying a constitutively activating region from Hsf. Once nucleosome remodelling by the DNA binding factor is accomplished a high level of NURF activity is not continuously required for recruitment of the general transcription machinery and transcription initiation. NURF is able to assist gene activation in a chromatin context: remodel nucleosomes for gene activation in chromatin.
Nucleosome remodelling factor is composed of at least four polypeptides that act in concert with the Trl transcription factor at the Hsp70 promoter. Nucleosome remodelling factor acts directly on the nucleosome to perturb its structure.
Wang et al., 2013, Nat. Struct. Mol. Biol. 20(2): 202--209
Chromatin proteins captured by ChIP-mass spectrometry are linked to dosage compensation in Drosophila. [FBrf0220693]
Acharya et al., 2012, G3 (Bethesda) 2(11): 1459--1472
Evidence for autoregulation and cell signaling pathway regulation from genome-wide binding of the Drosophila retinoblastoma protein. [FBrf0220009]
Korenjak et al., 2012, Mol. Cell. Biol. 32(21): 4375--4387
RBF Binding to both Canonical E2F Targets and Noncanonical Targets Depends on Functional dE2F/dDP Complexes. [FBrf0219643]
Larschan et al., 2012, PLoS Genet. 8(7): e1002830
Identification of Chromatin-Associated Regulators of MSL Complex Targeting in Drosophila Dosage Compensation. [FBrf0219020]
Nakayama et al., 2012, Development 139(24): 4582--4590
The PBAP remodeling complex is required for histone H3.3 replacement at chromatin boundaries and for boundary functions. [FBrf0219981]
Popkova et al., 2012, PLoS Genet. 8(12): e1003159
Polycomb controls gliogenesis by regulating the transient expression of the gcm/glide fate determinant. [FBrf0220515]
Sakoparnig et al., 2012, J. Comput. Biol. 19(2): 126--138
Binding profiles of chromatin-modifying proteins are predictive for transcriptional activity and promoter-proximal pausing. [FBrf0217402]
Demakov et al., 2011, BMC Genomics 12: 566
Protein composition of interband regions in polytene and cell line chromosomes of Drosophila melanogaster. [FBrf0216974]
Kharchenko et al., 2011, Nature 471(7339): 480--485
Comprehensive analysis of the chromatin landscape in Drosophila melanogaster. [FBrf0213294]
Kirilly et al., 2011, Neuron 72(1): 86--100
Intrinsic epigenetic factors cooperate with the steroid hormone ecdysone to govern dendrite pruning in Drosophila. [FBrf0216319]
Kondo and Perrimon, 2011, Sci. Signal. 4(154): rs1
A Genome-Wide RNAi Screen Identifies Core Components of the G2-M DNA Damage Checkpoint. [FBrf0212700]
Kugler et al., 2011, Genetics 188(1): 127--139
The Putzig-NURF Nucleosome Remodeling Complex Is Required for Ecdysone Receptor Signaling and Innate Immunity in Drosophila melanogaster. [FBrf0213648]