The gene Histone H3.3A is referred to in FlyBase by the symbol Dmel\His3.3A (CG5825, FBgn0014857). It is a protein_coding_gene from Drosophila melanogaster. Based on sequence similarity, it is predicted to have molecular function: DNA binding. There is experimental evidence that it is involved in the biological process: regulation of cell shape; cell adhesion; male meiosis. 27 alleles are reported. No phenotypic data is available. It has 2 annotated transcripts and 2 annotated polypeptides. Protein features are: Histone H3; Histone core; Histone-fold. Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of very high expression to a trough of high expression. Peak expression observed at stages throughout embryogenesis, during late larval stages, during early pupal stages, in stages of adults of both sexes. Summary of FlyAtlas Anatomical Expression Data: High or moderate 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, adult hindgut, adult heart, adult fat body, larval/adult salivary gland, larval trachea, adult ovary, adult male accessory gland, adult carcass. Expression at moderate levels in the following post-embryonic organs or tissues: larval hindgut, larval/adult Malpighian tubules, larval fat body, adult spermathecae, adult testis, larval carcass. Comments on Affy2 ProbeSet: ProbeSet 1627685_a_at completely aligns to an exonic region common to each of the 2 FlyBase-annotated transcript isoforms of His3.3A. Gene sequence location is 2L:5055058..5055995.
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Antibodies against His3.3 protein stain uniformly over the polytene chromosomes. His3.3 protein staining is seen in meiotic prophase chromatin of primary spermatocytes. One or two strongly staining foci were observed in each nucleus. The distribution of label coincides with the location of some of the Y-chromosomal lampbrush loops. At this stage His3 protein is observed mainly in the autosomal chromatin. In postmeiotic stages, His3.3 protein is observed in the protein body while the His3 protein is found mainly in the chromatin. During spermatid elongation, His3.3 protein is deposited in chromatin. At subsequent stages no major differences were observed in the distribution of His3 protein and His3.3 protein. In post-elongation spermatid cysts, the pattern of staining changes from an even distribution to a dispersed pattern. In mature sperm, no staining is observed.
modENCODE Temporal Expression Data for FBgn0014857
Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of very high expression to a trough of high expression. Peak expression observed at stages throughout embryogenesis, during late larval stages, during early pupal stages, in stages of adults of both sexes.
[download data (TSV)]
Guide to modENCODE expression level colors
No expression (0 - 0)
Extremely low expression (1 - 10)
Very low expression (11 - 100)
Low expression (101 - 400)
Moderate expression (401 - 1400)
Moderately high expression (1401 - 4000)
High expression (4001 - 10000)
Very high expression (10001 - 100000)
Extremely high expression (100001 - 2000000)
Linear, scaled to maximum FBgn0014857 expression level
Developmental Stage
Expression Level
embryo 00-02hr
16114
embryo 02-04hr
37338
embryo 04-06hr
53905
embryo 06-08hr
69180
embryo 08-10hr
57959
embryo 10-12hr
52365
embryo 12-14hr
23545
embryo 14-16hr
27075
embryo 16-18hr
17590
embryo 18-20hr
15107
embryo 20-22hr
9810
embryo 22-24hr
7659
larva L1
6788
larva L2
9150
larva L3 12hr old
6954
larva L3 puffstage 1-2
9634
larva L3 puffstage 3-6
12176
larva L3 puffstage 7-9
11215
white prepupae new
9590
white prepupae 12hr
10330
white prepupae 24hr
13040
pupae 2d postWPP
7417
pupae 3d postWPP
4853
pupae 4d postWPP
6523
adult male 01day
7985
adult male 05day
11328
adult male 30day
11533
adult female 01day
9923
adult female 05day
9135
adult female 30day
10983
Expression Level Scale
None
Extremely low
Very low
Low
Moderate
Moderately high
High
Very high
Linear, scaled to Very low expression
Developmental Stage
Expression Level
embryo 00-02hr
(16114)
embryo 02-04hr
(37338)
embryo 04-06hr
(53905)
embryo 06-08hr
(69180)
embryo 08-10hr
(57959)
embryo 10-12hr
(52365)
embryo 12-14hr
(23545)
embryo 14-16hr
(27075)
embryo 16-18hr
(17590)
embryo 18-20hr
(15107)
embryo 20-22hr
(9810)
embryo 22-24hr
(7659)
larva L1
(6788)
larva L2
(9150)
larva L3 12hr old
(6954)
larva L3 puffstage 1-2
(9634)
larva L3 puffstage 3-6
(12176)
larva L3 puffstage 7-9
(11215)
white prepupae new
(9590)
white prepupae 12hr
(10330)
white prepupae 24hr
(13040)
pupae 2d postWPP
(7417)
pupae 3d postWPP
(4853)
pupae 4d postWPP
(6523)
adult male 01day
(7985)
adult male 05day
(11328)
adult male 30day
(11533)
adult female 01day
(9923)
adult female 05day
(9135)
adult female 30day
(10983)
Expression Level Scale
None
Extremely low
Very low
Low
Linear, scaled to Moderate expression
Developmental Stage
Expression Level
embryo 00-02hr
(16114)
embryo 02-04hr
(37338)
embryo 04-06hr
(53905)
embryo 06-08hr
(69180)
embryo 08-10hr
(57959)
embryo 10-12hr
(52365)
embryo 12-14hr
(23545)
embryo 14-16hr
(27075)
embryo 16-18hr
(17590)
embryo 18-20hr
(15107)
embryo 20-22hr
(9810)
embryo 22-24hr
(7659)
larva L1
(6788)
larva L2
(9150)
larva L3 12hr old
(6954)
larva L3 puffstage 1-2
(9634)
larva L3 puffstage 3-6
(12176)
larva L3 puffstage 7-9
(11215)
white prepupae new
(9590)
white prepupae 12hr
(10330)
white prepupae 24hr
(13040)
pupae 2d postWPP
(7417)
pupae 3d postWPP
(4853)
pupae 4d postWPP
(6523)
adult male 01day
(7985)
adult male 05day
(11328)
adult male 30day
(11533)
adult female 01day
(9923)
adult female 05day
(9135)
adult female 30day
(10983)
Expression Level Scale
None
Extremely low
Very low
Low
Moderate
Moderately high
Linear, scaled to High expression
Developmental Stage
Expression Level
embryo 00-02hr
(16114)
embryo 02-04hr
(37338)
embryo 04-06hr
(53905)
embryo 06-08hr
(69180)
embryo 08-10hr
(57959)
embryo 10-12hr
(52365)
embryo 12-14hr
(23545)
embryo 14-16hr
(27075)
embryo 16-18hr
(17590)
embryo 18-20hr
(15107)
embryo 20-22hr
9810
embryo 22-24hr
7659
larva L1
6788
larva L2
9150
larva L3 12hr old
6954
larva L3 puffstage 1-2
9634
larva L3 puffstage 3-6
(12176)
larva L3 puffstage 7-9
(11215)
white prepupae new
9590
white prepupae 12hr
10330
white prepupae 24hr
(13040)
pupae 2d postWPP
7417
pupae 3d postWPP
4853
pupae 4d postWPP
6523
adult male 01day
7985
adult male 05day
(11328)
adult male 30day
(11533)
adult female 01day
9923
adult female 05day
9135
adult female 30day
(10983)
Expression Level Scale
None
Extremely low
Very low
Low
Moderate
Moderately high
High
Very high
Linear, scaled to Extremely high expression
Developmental Stage
Expression Level
embryo 00-02hr
16114
embryo 02-04hr
37338
embryo 04-06hr
53905
embryo 06-08hr
69180
embryo 08-10hr
57959
embryo 10-12hr
52365
embryo 12-14hr
23545
embryo 14-16hr
27075
embryo 16-18hr
17590
embryo 18-20hr
15107
embryo 20-22hr
9810
embryo 22-24hr
7659
larva L1
6788
larva L2
9150
larva L3 12hr old
6954
larva L3 puffstage 1-2
9634
larva L3 puffstage 3-6
12176
larva L3 puffstage 7-9
11215
white prepupae new
9590
white prepupae 12hr
10330
white prepupae 24hr
13040
pupae 2d postWPP
7417
pupae 3d postWPP
4853
pupae 4d postWPP
6523
adult male 01day
7985
adult male 05day
11328
adult male 30day
11533
adult female 01day
9923
adult female 05day
9135
adult female 30day
10983
Expression Level Scale
None
Extremely low
Very low
Low
Moderate
Moderately high
High
Very high
Extremely high
log, scaled to maximum FBgn0014857 expression level
Developmental Stage
Expression Level
embryo 00-02hr
16114
embryo 02-04hr
37338
embryo 04-06hr
53905
embryo 06-08hr
69180
embryo 08-10hr
57959
embryo 10-12hr
52365
embryo 12-14hr
23545
embryo 14-16hr
27075
embryo 16-18hr
17590
embryo 18-20hr
15107
embryo 20-22hr
9810
embryo 22-24hr
7659
larva L1
6788
larva L2
9150
larva L3 12hr old
6954
larva L3 puffstage 1-2
9634
larva L3 puffstage 3-6
12176
larva L3 puffstage 7-9
11215
white prepupae new
9590
white prepupae 12hr
10330
white prepupae 24hr
13040
pupae 2d postWPP
7417
pupae 3d postWPP
4853
pupae 4d postWPP
6523
adult male 01day
7985
adult male 05day
11328
adult male 30day
11533
adult female 01day
9923
adult female 05day
9135
adult female 30day
10983
Expression Level Scale
None
Extremely low
Very low
Low
Moderate
Moderately high
High
Very high
Extremely high
log, scaled to Very low expression
Developmental Stage
Expression Level
embryo 00-02hr
(16114)
embryo 02-04hr
(37338)
embryo 04-06hr
(53905)
embryo 06-08hr
(69180)
embryo 08-10hr
(57959)
embryo 10-12hr
(52365)
embryo 12-14hr
(23545)
embryo 14-16hr
(27075)
embryo 16-18hr
(17590)
embryo 18-20hr
(15107)
embryo 20-22hr
(9810)
embryo 22-24hr
(7659)
larva L1
(6788)
larva L2
(9150)
larva L3 12hr old
(6954)
larva L3 puffstage 1-2
(9634)
larva L3 puffstage 3-6
(12176)
larva L3 puffstage 7-9
(11215)
white prepupae new
(9590)
white prepupae 12hr
(10330)
white prepupae 24hr
(13040)
pupae 2d postWPP
(7417)
pupae 3d postWPP
(4853)
pupae 4d postWPP
(6523)
adult male 01day
(7985)
adult male 05day
(11328)
adult male 30day
(11533)
adult female 01day
(9923)
adult female 05day
(9135)
adult female 30day
(10983)
Expression Level Scale
None
Extremely low
Very low
Low
log, scaled to Moderate expression
Developmental Stage
Expression Level
embryo 00-02hr
(16114)
embryo 02-04hr
(37338)
embryo 04-06hr
(53905)
embryo 06-08hr
(69180)
embryo 08-10hr
(57959)
embryo 10-12hr
(52365)
embryo 12-14hr
(23545)
embryo 14-16hr
(27075)
embryo 16-18hr
(17590)
embryo 18-20hr
(15107)
embryo 20-22hr
(9810)
embryo 22-24hr
(7659)
larva L1
(6788)
larva L2
(9150)
larva L3 12hr old
(6954)
larva L3 puffstage 1-2
(9634)
larva L3 puffstage 3-6
(12176)
larva L3 puffstage 7-9
(11215)
white prepupae new
(9590)
white prepupae 12hr
(10330)
white prepupae 24hr
(13040)
pupae 2d postWPP
(7417)
pupae 3d postWPP
(4853)
pupae 4d postWPP
(6523)
adult male 01day
(7985)
adult male 05day
(11328)
adult male 30day
(11533)
adult female 01day
(9923)
adult female 05day
(9135)
adult female 30day
(10983)
Expression Level Scale
None
Extremely low
Very low
Low
Moderate
Moderately high
log, scaled to High expression
Developmental Stage
Expression Level
embryo 00-02hr
16114
embryo 02-04hr
(37338)
embryo 04-06hr
(53905)
embryo 06-08hr
(69180)
embryo 08-10hr
(57959)
embryo 10-12hr
(52365)
embryo 12-14hr
(23545)
embryo 14-16hr
(27075)
embryo 16-18hr
17590
embryo 18-20hr
15107
embryo 20-22hr
9810
embryo 22-24hr
7659
larva L1
6788
larva L2
9150
larva L3 12hr old
6954
larva L3 puffstage 1-2
9634
larva L3 puffstage 3-6
12176
larva L3 puffstage 7-9
11215
white prepupae new
9590
white prepupae 12hr
10330
white prepupae 24hr
13040
pupae 2d postWPP
7417
pupae 3d postWPP
4853
pupae 4d postWPP
6523
adult male 01day
7985
adult male 05day
11328
adult male 30day
11533
adult female 01day
9923
adult female 05day
9135
adult female 30day
10983
Expression Level Scale
None
Extremely low
Very low
Low
Moderate
Moderately high
High
Very high
log, scaled to Extremely high expression
Developmental Stage
Expression Level
embryo 00-02hr
16114
embryo 02-04hr
37338
embryo 04-06hr
53905
embryo 06-08hr
69180
embryo 08-10hr
57959
embryo 10-12hr
52365
embryo 12-14hr
23545
embryo 14-16hr
27075
embryo 16-18hr
17590
embryo 18-20hr
15107
embryo 20-22hr
9810
embryo 22-24hr
7659
larva L1
6788
larva L2
9150
larva L3 12hr old
6954
larva L3 puffstage 1-2
9634
larva L3 puffstage 3-6
12176
larva L3 puffstage 7-9
11215
white prepupae new
9590
white prepupae 12hr
10330
white prepupae 24hr
13040
pupae 2d postWPP
7417
pupae 3d postWPP
4853
pupae 4d postWPP
6523
adult male 01day
7985
adult male 05day
11328
adult male 30day
11533
adult female 01day
9923
adult female 05day
9135
adult female 30day
10983
Expression Level Scale
None
Extremely low
Very low
Low
Moderate
Moderately high
High
Very high
Extremely high
Heatmap
Developmental Stage
Expression Level
embryo 00-02hr
embryo 02-04hr
embryo 04-06hr
embryo 06-08hr
embryo 08-10hr
embryo 10-12hr
embryo 12-14hr
embryo 14-16hr
embryo 16-18hr
embryo 18-20hr
embryo 20-22hr
embryo 22-24hr
larva L1
larva L2
larva L3 12hr old
larva L3 puffstage 1-2
larva L3 puffstage 3-6
larva L3 puffstage 7-9
white prepupae new
white prepupae 12hr
white prepupae 24hr
pupae 2d postWPP
pupae 3d postWPP
pupae 4d postWPP
adult male 01day
adult male 05day
adult male 30day
adult female 01day
adult female 05day
adult female 30day
FlyAtlas Anatomical Expression Data for FBgn0014857
Summary of FlyAtlas Anatomical Expression Data: High or moderate 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, adult hindgut, adult heart, adult fat body, larval/adult salivary gland, larval trachea, adult ovary, adult male accessory gland, adult carcass. Expression at moderate levels in the following post-embryonic organs or tissues: larval hindgut, larval/adult Malpighian tubules, larval fat body, adult spermathecae, adult testis, larval 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 (1000 - 25000)
Linear, scaled to maximum FBgn0014857 expression level
Tissue
Expression Level
Larval Central Nervous System
1625.225
Larval Midgut
636
Larval Hindgut
470.3
Larval Malpighian Tubules
397.9
Larval Fat Body
477.2
Larval Salivary Gland
1122.9
Larval Trachea
767.6
Larval Carcass
445.5
Adult Head
767.4
Adult Eye
1533.75
Adult Brain
636
Adult Thoracic-Abdominal Ganglion
578.5
Adult Crop
504.3
Adult Midgut
1499.7
Adult Hindgut
786.9
Adult Malpighian Tubules
135.7
Adult Fat Body
607.8
Adult Salivary Gland
1907.7
Adult Heart
711.725
Adult VirginFemale Spermatheca
246.8
Adult InseminatedFemale Spermatheca
212.3
Adult Ovary
579.8
Adult Testis
460.1
Adult Male Accessory Gland
503.7
Adult Carcass
643.3
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
(1625.225)
Larval Midgut
(636)
Larval Hindgut
470.3
Larval Malpighian Tubules
397.9
Larval Fat Body
477.2
Larval Salivary Gland
(1122.9)
Larval Trachea
(767.6)
Larval Carcass
445.5
Adult Head
(767.4)
Adult Eye
(1533.75)
Adult Brain
(636)
Adult Thoracic-Abdominal Ganglion
(578.5)
Adult Crop
504.3
Adult Midgut
(1499.7)
Adult Hindgut
(786.9)
Adult Malpighian Tubules
135.7
Adult Fat Body
(607.8)
Adult Salivary Gland
(1907.7)
Adult Heart
(711.725)
Adult VirginFemale Spermatheca
246.8
Adult InseminatedFemale Spermatheca
212.3
Adult Ovary
(579.8)
Adult Testis
460.1
Adult Male Accessory Gland
503.7
Adult Carcass
(643.3)
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
(1625.225)
Larval Midgut
636
Larval Hindgut
470.3
Larval Malpighian Tubules
397.9
Larval Fat Body
477.2
Larval Salivary Gland
(1122.9)
Larval Trachea
767.6
Larval Carcass
445.5
Adult Head
767.4
Adult Eye
(1533.75)
Adult Brain
636
Adult Thoracic-Abdominal Ganglion
578.5
Adult Crop
504.3
Adult Midgut
(1499.7)
Adult Hindgut
786.9
Adult Malpighian Tubules
135.7
Adult Fat Body
607.8
Adult Salivary Gland
(1907.7)
Adult Heart
711.725
Adult VirginFemale Spermatheca
246.8
Adult InseminatedFemale Spermatheca
212.3
Adult Ovary
579.8
Adult Testis
460.1
Adult Male Accessory Gland
503.7
Adult Carcass
643.3
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
1625.225
Larval Midgut
636
Larval Hindgut
470.3
Larval Malpighian Tubules
397.9
Larval Fat Body
477.2
Larval Salivary Gland
1122.9
Larval Trachea
767.6
Larval Carcass
445.5
Adult Head
767.4
Adult Eye
1533.75
Adult Brain
636
Adult Thoracic-Abdominal Ganglion
578.5
Adult Crop
504.3
Adult Midgut
1499.7
Adult Hindgut
786.9
Adult Malpighian Tubules
135.7
Adult Fat Body
607.8
Adult Salivary Gland
1907.7
Adult Heart
711.725
Adult VirginFemale Spermatheca
246.8
Adult InseminatedFemale Spermatheca
212.3
Adult Ovary
579.8
Adult Testis
460.1
Adult Male Accessory Gland
503.7
Adult Carcass
643.3
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to maximum FBgn0014857 expression level
Tissue
Expression Level
Larval Central Nervous System
1625.225
Larval Midgut
636
Larval Hindgut
470.3
Larval Malpighian Tubules
397.9
Larval Fat Body
477.2
Larval Salivary Gland
1122.9
Larval Trachea
767.6
Larval Carcass
445.5
Adult Head
767.4
Adult Eye
1533.75
Adult Brain
636
Adult Thoracic-Abdominal Ganglion
578.5
Adult Crop
504.3
Adult Midgut
1499.7
Adult Hindgut
786.9
Adult Malpighian Tubules
135.7
Adult Fat Body
607.8
Adult Salivary Gland
1907.7
Adult Heart
711.725
Adult VirginFemale Spermatheca
246.8
Adult InseminatedFemale Spermatheca
212.3
Adult Ovary
579.8
Adult Testis
460.1
Adult Male Accessory Gland
503.7
Adult Carcass
643.3
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
(1625.225)
Larval Midgut
636
Larval Hindgut
470.3
Larval Malpighian Tubules
397.9
Larval Fat Body
477.2
Larval Salivary Gland
(1122.9)
Larval Trachea
767.6
Larval Carcass
445.5
Adult Head
767.4
Adult Eye
(1533.75)
Adult Brain
636
Adult Thoracic-Abdominal Ganglion
578.5
Adult Crop
504.3
Adult Midgut
(1499.7)
Adult Hindgut
786.9
Adult Malpighian Tubules
135.7
Adult Fat Body
607.8
Adult Salivary Gland
(1907.7)
Adult Heart
711.725
Adult VirginFemale Spermatheca
246.8
Adult InseminatedFemale Spermatheca
212.3
Adult Ovary
579.8
Adult Testis
460.1
Adult Male Accessory Gland
503.7
Adult Carcass
643.3
Expression Level Scale
None
Low
Moderate
High
log, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
1625.225
Larval Midgut
636
Larval Hindgut
470.3
Larval Malpighian Tubules
397.9
Larval Fat Body
477.2
Larval Salivary Gland
1122.9
Larval Trachea
767.6
Larval Carcass
445.5
Adult Head
767.4
Adult Eye
1533.75
Adult Brain
636
Adult Thoracic-Abdominal Ganglion
578.5
Adult Crop
504.3
Adult Midgut
1499.7
Adult Hindgut
786.9
Adult Malpighian Tubules
135.7
Adult Fat Body
607.8
Adult Salivary Gland
(1907.7)
Adult Heart
711.725
Adult VirginFemale Spermatheca
246.8
Adult InseminatedFemale Spermatheca
212.3
Adult Ovary
579.8
Adult Testis
460.1
Adult Male Accessory Gland
503.7
Adult Carcass
643.3
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
1625.225
Larval Midgut
636
Larval Hindgut
470.3
Larval Malpighian Tubules
397.9
Larval Fat Body
477.2
Larval Salivary Gland
1122.9
Larval Trachea
767.6
Larval Carcass
445.5
Adult Head
767.4
Adult Eye
1533.75
Adult Brain
636
Adult Thoracic-Abdominal Ganglion
578.5
Adult Crop
504.3
Adult Midgut
1499.7
Adult Hindgut
786.9
Adult Malpighian Tubules
135.7
Adult Fat Body
607.8
Adult Salivary Gland
1907.7
Adult Heart
711.725
Adult VirginFemale Spermatheca
246.8
Adult InseminatedFemale Spermatheca
212.3
Adult Ovary
579.8
Adult Testis
460.1
Adult Male Accessory Gland
503.7
Adult Carcass
643.3
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
Please Note FlyBase no
longer curates genomic clone accessions so this list
may not be complete
cDNA Clones ( 208 )
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.
Nucleosomes containing His3.3A protein but not His3 protein are specifically assembled in paternal chromatin before the first round of DNA replication in the fertilised egg.
RNAi screen using dsRNA made from templates generated with primers directed against this gene causes a phenotype when assayed in Kc167 and S2R+ cells: cells become round and detached.
The histone H3.3 replacement variant is encoded by two genes, His3.3A and His3.3B, in D.melanogaster. These genes encode exactly the same protein but are widely divergent in their untranslated regions.