A Database of Drosophila Genes & Genomes

FB2012_01, released January 20th, 2012
 

Gene Dmel\roX1

General Information
SymbolDmel\roX1SpeciesD. melanogaster
NameRNA on the X 1Annotation symbolCR32777
Feature typenon_protein_coding_geneFlyBase IDFBgn0019661
Gene Model StatusCurrent Stock availability 6 publicly available
Also Known AsroX
Genomic Location
Chromosome (arm)XRecombination map1-
Cytogenetic map3F3-3F3Sequence locationX:3,752,929..3,756,720 [-]

Genomic Maps

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Automatically generated summary

See sections below for more information
The gene RNA on the X 1 is referred to in FlyBase by the symbol Dmel\roX1 (CR32777, FBgn0019661). It is a non_protein_coding_gene from Drosophila melanogaster. Its molecular function is unknown. It is reported to be involved in the biological process: dosage compensation complex assembly involved in dosage compensation by hyperactivation of X chromosome; dosage compensation, by hyperactivation of X chromosome; dosage compensation. 59 alleles are reported. No phenotypic data is available. It has 2 annotated transcripts. Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of high expression to a trough of very low expression. Peak expression observed within 00-18 hour embryonic stages, during late larval stages, at stages throughout the pupal period, in adult male stages. Summary of FlyAtlas Anatomical Expression Data: No FlyAtlas data available because no Affy2 ProbeSet aligns to an exon of roX1. Comments on Affy2 ProbeSet: No relevant information because no Affy2 ProbeSet aligns to an exon of roX1. Gene sequence location is X:3752929..3756720.

External Summaries
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Description
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FB2012_01
Sequence features
References
FB2011_10
All updates Click here to see a list of all updates to this record from FB2010_08 and on.
hide Detailed Mapping Data
FlyBase Computed Cytological Location
Cytogenetic map
Evidence for location
3F3-3F3  
Limits computationally determined from genome sequence between P{EP}EP1200EP1200&P{EP}EP1343 and P{EP}CG2930EP1352  
Experimentally Determined Cytological Location
Cytogenetic map
Notes
References
3F-3F  
3F-3F  
3F-3F  
(determined by in situ hybridisation)  
3F-3F  
Experimentally Determined Recombination Data
Location
Left of (cM)
Right of (cM)
Notes
hide Gene Model & Products
Please see the GBrowse view of Dmel\roX1 for information on other features
To submit a correction to a gene model please use the Contact FlyBase form
detailed view FBtr0112801 FBtr0070606 FBtr0112802 FBtr0070635 FBtr0070634 FBtr0070632 FBtr0070633 FBtr0070631 FBpp0070602 FBpp0070603 FBpp0070601 FBti0071840 FBti0066085 FBti0004082 FBti0053507 FBti0131902
Comments on Gene Model
hide Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
 
FBtr0070634
  3748
 
FBtr0070635
  3460
 
Additional Transcript Data & Comments
Reported size (kB)
3.8, 3.6 (northern blot)
3.7 (northern blot)
Comments
External Data
Crossreferences
hide Sequences Consistent with the Gene Model
DDBJ /
EMBL /
GenBank
DNA sequence
 
Name
 
 
hide Mapped Features
Mapped Features have been reorganized, please see this article for details.
Additional mapped features and mutations can be found on GBrowse or related reports.
Type
Symbol & Location
Additional Notes
References
protein binding site
bound_moiety=Sxl-XP
evidence=predicted
protein binding site
bound_moiety=Sxl-XP
evidence=predicted
hide External Data
Linkouts
Crossreferences
hide Expression Data
hideTranscript Expression
No Assay Recorded
Stage
Tissue/Position (including subcellular localization)
Reference
in situ
Stage
Tissue/Position (including subcellular localization)
Reference
Comment:expression is male-specific
Comment:expression is male-specific
Comment:female embryo
Comment:female embryo
northern blot
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data
roX1 transcript is detected in the nuclei of all body parts, and is associated with the X chromosome. In embryos, roX1 transcript colocalizes exactly with msl-1 protein.
In adult males, roX1 transcripts are expressed in the cell bodies of the central brain and mushroom bodies, the neurons of the optic lobe, and the interneurons of the antennal lobes. They are also expressed in peripheral neurons including the photoreceptor cells and the olfactory neurons of the third antennal segment. Strong expression is observed in the thoracic ganglia and weak expression is seen in the gut. Expression appears to be confined to the nucleus. No expression is observed in females.
In cryosections of adults, roX1 transcription is strongest in the central nervous system of the male brain. Most cells of the brain and thoracic ganglia stain strongly. Weaker expression is observed in the gut, parts of the reproductive tract (especially the ejaculatory bulb), and in fat cells. In embryos, roX1 transcripts are expressed in both sexes starting at about 2.5 hours after egg laying. Expression is strong in cells of the CNS until ~stage 13 at which point the expression in females subsides. The staining disappears first from the ventral nerve cord and then from the brain. In male larvae, strong staining is seen in many tissues, including the large polyploid cells of the gastric caecae, the ring gland and the nephrocytes, and the salivary glands. This staining is nuclear and localizes to the X chromosome. roX1 expression is controlled by the dosage compensation pathway and not by tra.
Marker for
Subcellular Localization
CV Term
Notes
hide High-Throughput Expression Data
or
Untitled Document detailed view roX1-RB roX1-RA yin-RB yin-RC yin-RA
See Gelbart and Emmert, 2010.10.13 for analysis details and data files for all genes.

modENCODE Temporal Expression Data for FBgn0019661


   Styles
Linear
Logarithmic
Heatmap
   Scales
max expr for FBgn0019661
Very low expression bin max
Moderate expression bin max
High expression bin max
Extremely high expression bin max

Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of high expression to a trough of very low expression. Peak expression observed within 00-18 hour embryonic stages, during late larval stages, at stages throughout the pupal period, in adult male stages.
[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 FBgn0019661 expression level
Developmental Stage   Expression Level
embryo 00-02hr
 
 301
embryo 02-04hr
 
 5260
embryo 04-06hr
 
 9873
embryo 06-08hr
 
 9389
embryo 08-10hr
 
 9050
embryo 10-12hr
 
 4340
embryo 12-14hr
 
 6398
embryo 14-16hr
 
 1595
embryo 16-18hr
 
 3130
embryo 18-20hr
 
 2504
embryo 20-22hr
 
 2528
embryo 22-24hr
 
 3907
larva L1
 
 1727
larva L2
 
 1872
larva L3 12hr old
 
 1416
larva L3 puffstage 1-2
 
 1678
larva L3 puffstage 3-6
 
 3650
larva L3 puffstage 7-9
 
 5159
white prepupae new
 
 4545
white prepupae 12hr
 
 3576
white prepupae 24hr
 
 5755
pupae 2d postWPP
 
 4206
pupae 3d postWPP
 
 2635
pupae 4d postWPP
 
 932
adult male 01day
 
 4423
adult male 05day
 
 4870
adult male 30day
 
 2728
adult female 01day
 
 28
adult female 05day
 
 24
adult female 30day
 
 26
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
 (301)
embryo 02-04hr
 (5260)
embryo 04-06hr
 (9873)
embryo 06-08hr
 (9389)
embryo 08-10hr
 (9050)
embryo 10-12hr
 (4340)
embryo 12-14hr
 (6398)
embryo 14-16hr
 (1595)
embryo 16-18hr
 (3130)
embryo 18-20hr
 (2504)
embryo 20-22hr
 (2528)
embryo 22-24hr
 (3907)
larva L1
 (1727)
larva L2
 (1872)
larva L3 12hr old
 (1416)
larva L3 puffstage 1-2
 (1678)
larva L3 puffstage 3-6
 (3650)
larva L3 puffstage 7-9
 (5159)
white prepupae new
 (4545)
white prepupae 12hr
 (3576)
white prepupae 24hr
 (5755)
pupae 2d postWPP
 (4206)
pupae 3d postWPP
 (2635)
pupae 4d postWPP
 (932)
adult male 01day
 (4423)
adult male 05day
 (4870)
adult male 30day
 (2728)
adult female 01day
 
 28
adult female 05day
 
 24
adult female 30day
 
 26
Expression Level Scale
 None 
 Extremely low 
 Very low 
 Low 
Linear, scaled to Moderate expression
Developmental Stage   Expression Level
embryo 00-02hr
 
 301
embryo 02-04hr
 (5260)
embryo 04-06hr
 (9873)
embryo 06-08hr
 (9389)
embryo 08-10hr
 (9050)
embryo 10-12hr
 (4340)
embryo 12-14hr
 (6398)
embryo 14-16hr
 (1595)
embryo 16-18hr
 (3130)
embryo 18-20hr
 (2504)
embryo 20-22hr
 (2528)
embryo 22-24hr
 (3907)
larva L1
 (1727)
larva L2
 (1872)
larva L3 12hr old
 1416
larva L3 puffstage 1-2
 (1678)
larva L3 puffstage 3-6
 (3650)
larva L3 puffstage 7-9
 (5159)
white prepupae new
 (4545)
white prepupae 12hr
 (3576)
white prepupae 24hr
 (5755)
pupae 2d postWPP
 (4206)
pupae 3d postWPP
 (2635)
pupae 4d postWPP
 
 932
adult male 01day
 (4423)
adult male 05day
 (4870)
adult male 30day
 (2728)
adult female 01day
 
 28
adult female 05day
 
 24
adult female 30day
 
 26
Expression Level Scale
 None 
 Extremely low 
 Very low 
 Low 
 Moderate 
 Moderately high 
Linear, scaled to High expression
Developmental Stage   Expression Level
embryo 00-02hr
 
 301
embryo 02-04hr
 
 5260
embryo 04-06hr
 
 9873
embryo 06-08hr
 
 9389
embryo 08-10hr
 
 9050
embryo 10-12hr
 
 4340
embryo 12-14hr
 
 6398
embryo 14-16hr
 
 1595
embryo 16-18hr
 
 3130
embryo 18-20hr
 
 2504
embryo 20-22hr
 
 2528
embryo 22-24hr
 
 3907
larva L1
 
 1727
larva L2
 
 1872
larva L3 12hr old
 
 1416
larva L3 puffstage 1-2
 
 1678
larva L3 puffstage 3-6
 
 3650
larva L3 puffstage 7-9
 
 5159
white prepupae new
 
 4545
white prepupae 12hr
 
 3576
white prepupae 24hr
 
 5755
pupae 2d postWPP
 
 4206
pupae 3d postWPP
 
 2635
pupae 4d postWPP
 
 932
adult male 01day
 
 4423
adult male 05day
 
 4870
adult male 30day
 
 2728
adult female 01day
 
 28
adult female 05day
 
 24
adult female 30day
 
 26
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
 
 301
embryo 02-04hr
 
 5260
embryo 04-06hr
 
 9873
embryo 06-08hr
 
 9389
embryo 08-10hr
 
 9050
embryo 10-12hr
 
 4340
embryo 12-14hr
 
 6398
embryo 14-16hr
 
 1595
embryo 16-18hr
 
 3130
embryo 18-20hr
 
 2504
embryo 20-22hr
 
 2528
embryo 22-24hr
 
 3907
larva L1
 
 1727
larva L2
 
 1872
larva L3 12hr old
 
 1416
larva L3 puffstage 1-2
 
 1678
larva L3 puffstage 3-6
 
 3650
larva L3 puffstage 7-9
 
 5159
white prepupae new
 
 4545
white prepupae 12hr
 
 3576
white prepupae 24hr
 
 5755
pupae 2d postWPP
 
 4206
pupae 3d postWPP
 
 2635
pupae 4d postWPP
 
 932
adult male 01day
 
 4423
adult male 05day
 
 4870
adult male 30day
 
 2728
adult female 01day
 
 28
adult female 05day
 
 24
adult female 30day
 
 26
Expression Level Scale
 None 
 Extremely low 
 Very low 
 Low 
 Moderate 
 Moderately high 
 High 
 Very high 
 Extremely high 
log, scaled to maximum FBgn0019661 expression level
Developmental Stage   Expression Level
embryo 00-02hr
 
 301
embryo 02-04hr
 
 5260
embryo 04-06hr
 
 9873
embryo 06-08hr
 
 9389
embryo 08-10hr
 
 9050
embryo 10-12hr
 
 4340
embryo 12-14hr
 
 6398
embryo 14-16hr
 
 1595
embryo 16-18hr
 
 3130
embryo 18-20hr
 
 2504
embryo 20-22hr
 
 2528
embryo 22-24hr
 
 3907
larva L1
 
 1727
larva L2
 
 1872
larva L3 12hr old
 
 1416
larva L3 puffstage 1-2
 
 1678
larva L3 puffstage 3-6
 
 3650
larva L3 puffstage 7-9
 
 5159
white prepupae new
 
 4545
white prepupae 12hr
 
 3576
white prepupae 24hr
 
 5755
pupae 2d postWPP
 
 4206
pupae 3d postWPP
 
 2635
pupae 4d postWPP
 
 932
adult male 01day
 
 4423
adult male 05day
 
 4870
adult male 30day
 
 2728
adult female 01day
 
 28
adult female 05day
 
 24
adult female 30day
 
 26
Expression Level Scale
 None 
 Extremely low 
 Very low 
 Low 
 Moderate 
 Moderately high 
 High 
 Very high 
log, scaled to Very low expression
Developmental Stage   Expression Level
embryo 00-02hr
 (301)
embryo 02-04hr
 (5260)
embryo 04-06hr
 (9873)
embryo 06-08hr
 (9389)
embryo 08-10hr
 (9050)
embryo 10-12hr
 (4340)
embryo 12-14hr
 (6398)
embryo 14-16hr
 (1595)
embryo 16-18hr
 (3130)
embryo 18-20hr
 (2504)
embryo 20-22hr
 (2528)
embryo 22-24hr
 (3907)
larva L1
 (1727)
larva L2
 (1872)
larva L3 12hr old
 (1416)
larva L3 puffstage 1-2
 (1678)
larva L3 puffstage 3-6
 (3650)
larva L3 puffstage 7-9
 (5159)
white prepupae new
 (4545)
white prepupae 12hr
 (3576)
white prepupae 24hr
 (5755)
pupae 2d postWPP
 (4206)
pupae 3d postWPP
 (2635)
pupae 4d postWPP
 (932)
adult male 01day
 (4423)
adult male 05day
 (4870)
adult male 30day
 (2728)
adult female 01day
 
 28
adult female 05day
 
 24
adult female 30day
 
 26
Expression Level Scale
 None 
 Extremely low 
 Very low 
 Low 
log, scaled to Moderate expression
Developmental Stage   Expression Level
embryo 00-02hr
 
 301
embryo 02-04hr
 (5260)
embryo 04-06hr
 (9873)
embryo 06-08hr
 (9389)
embryo 08-10hr
 (9050)
embryo 10-12hr
 (4340)
embryo 12-14hr
 (6398)
embryo 14-16hr
 1595
embryo 16-18hr
 (3130)
embryo 18-20hr
 (2504)
embryo 20-22hr
 (2528)
embryo 22-24hr
 (3907)
larva L1
 1727
larva L2
 1872
larva L3 12hr old
 1416
larva L3 puffstage 1-2
 1678
larva L3 puffstage 3-6
 (3650)
larva L3 puffstage 7-9
 (5159)
white prepupae new
 (4545)
white prepupae 12hr
 (3576)
white prepupae 24hr
 (5755)
pupae 2d postWPP
 (4206)
pupae 3d postWPP
 (2635)
pupae 4d postWPP
 
 932
adult male 01day
 (4423)
adult male 05day
 (4870)
adult male 30day
 (2728)
adult female 01day
 
 28
adult female 05day
 
 24
adult female 30day
 
 26
Expression Level Scale
 None 
 Extremely low 
 Very low 
 Low 
 Moderate 
 Moderately high 
log, scaled to High expression
Developmental Stage   Expression Level
embryo 00-02hr
 
 301
embryo 02-04hr
 
 5260
embryo 04-06hr
 
 9873
embryo 06-08hr
 
 9389
embryo 08-10hr
 
 9050
embryo 10-12hr
 
 4340
embryo 12-14hr
 
 6398
embryo 14-16hr
 
 1595
embryo 16-18hr
 
 3130
embryo 18-20hr
 
 2504
embryo 20-22hr
 
 2528
embryo 22-24hr
 
 3907
larva L1
 
 1727
larva L2
 
 1872
larva L3 12hr old
 
 1416
larva L3 puffstage 1-2
 
 1678
larva L3 puffstage 3-6
 
 3650
larva L3 puffstage 7-9
 
 5159
white prepupae new
 
 4545
white prepupae 12hr
 
 3576
white prepupae 24hr
 
 5755
pupae 2d postWPP
 
 4206
pupae 3d postWPP
 
 2635
pupae 4d postWPP
 
 932
adult male 01day
 
 4423
adult male 05day
 
 4870
adult male 30day
 
 2728
adult female 01day
 
 28
adult female 05day
 
 24
adult female 30day
 
 26
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
 
 301
embryo 02-04hr
 
 5260
embryo 04-06hr
 
 9873
embryo 06-08hr
 
 9389
embryo 08-10hr
 
 9050
embryo 10-12hr
 
 4340
embryo 12-14hr
 
 6398
embryo 14-16hr
 
 1595
embryo 16-18hr
 
 3130
embryo 18-20hr
 
 2504
embryo 20-22hr
 
 2528
embryo 22-24hr
 
 3907
larva L1
 
 1727
larva L2
 
 1872
larva L3 12hr old
 
 1416
larva L3 puffstage 1-2
 
 1678
larva L3 puffstage 3-6
 
 3650
larva L3 puffstage 7-9
 
 5159
white prepupae new
 
 4545
white prepupae 12hr
 
 3576
white prepupae 24hr
 
 5755
pupae 2d postWPP
 
 4206
pupae 3d postWPP
 
 2635
pupae 4d postWPP
 
 932
adult male 01day
 
 4423
adult male 05day
 
 4870
adult male 30day
 
 2728
adult female 01day
 
 28
adult female 05day
 
 24
adult female 30day
 
 26
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
 
 

modENCODE Temporal Expression Data (Graveley et al., 2011)
FlyAtlas Anatomical Expression Data (Chintapalli et al., 2007)
hide Expression Clusters
hide External Data & Images
Linkouts
FlyExpress - Embryonic expression images (BDGP data)
hide Alleles & Phenotypes
hide Summary of Allele Phenotypes
Lethality
Allele
Sterility
Allele
Phenotype manifest in
Allele
hide Classical Alleles ( 17 )
For All Classical Alleles Show

Allele of roX1ClassMutagenStocksKnown lesion
roX1c060801 --
roX1f073881 --
roX1G9581 --
roX133DE0 Yes
roX151A0 Yes
roX1ex18A0 Yes
roX1ex33A0 Yes
roX1ex40A0 Yes
roX1ex58A0 Yes
roX1ex60 Yes
roX1ex7B0 Yes
roX1ex84A0 Yes
roX1GG01214
0 --
roX1MB7100 Yes
roX1SMC17Aloss of function allele0 Yes
roX1SMC40A
0 Yes
roX1unspecified
0 --
hide Alleles Carried on Transgenic Constructs ( 42 )
For All Alleles Carried on Transgenic Constructs Show

Allele of roX1ClassMutagenStocksKnown lesion
roX1GL001721 Yes
roX1JF011911 Yes
roX1JF028181 Yes
roX13'S.Hsp830 Yes
roX15'S.Hsp830 Yes
roX1a.Hsp830 Yes
roX1ex7B.Hsp830 Yes
roX1GM.ΔDHS0 Yes
roX1Hsp83.3'0 Yes
roX1Hsp83.5'0 Yes
roX1Hsp83.PD0 Yes
roX1Hsp83.PM0 Yes
roX1L.Hsp830 Yes
roX1m.c30 Yes
roX1Scer\UAS.cKa0 Yes
roX1SL.Hsp830 Yes
roX1t4.90 Yes
roX1Δ1.Hsp830 Yes
roX1Δ10.Hsp830 Yes
roX1Δ11.Hsp830 Yes
roX1Δ2.Hsp830 Yes
roX1Δ3.Hsp830 Yes
roX1Δ30.Hsp830 Yes
roX1Δ390 Yes
roX1Δ4.Hsp830 Yes
roX1Δ5.Hsp830 Yes
roX1Δ6.Hsp830 Yes
roX1Δ7.Hsp830 Yes
roX1Δ8.Hsp830 Yes
roX1Δ9.Hsp830 Yes
roX1ΔAB.Hsp830 Yes
roX1ΔIR.Hsp830 Yes
roX1ΔIRB.Hsp830 Yes
roX1ΔO.Hsp830 Yes
roX1ΔRB1-3.Hsp830 Yes
roX1ΔRB1.Hsp830 Yes
roX1ΔRB123.Hsp830 Yes
roX1ΔRB2.Hsp830 Yes
roX1ΔRB3.Hsp830 Yes
roX1ΔReg1.Hsp830 Yes
roX1ΔSL1.Hsp830 Yes
roX1ΔSL2.Hsp830 Yes
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insertion of enhancer trap
insertion of mobile activating element
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roX1 allele
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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.
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Source for database identity of
Source for database merge of
Source for merge of: roX1 BcDNA:GH10432
Additional comments
Source for merge of roX1 BcDNA:GH10432 was a shared cDNA (date:030728).
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Transcription of the roX1 gene is directly regulated by the DNaseI hypersensitive site (DHS) within the roX1 transcription unit. This regulation requires the msl-1, msl-2, msl-3 and mle proteins but not roX (roX1 and roX2) RNAs. The DHS is not required for initiation of cis spreading of the MSL complex.
msl-2 protein controls male-specific transcription of roX1 and does not require any other MSL protein for this role.
New annotation (CR32777) in release 3 of the genome annotation.
roX1 and roX2 produce redundant transcripts required for the targeting of the MSL complex.
The "roX1 chromatin entry site" (roX1-CES) is a region within the roX1 gene that is able to recruit the MSL complex. A 217bp fragment is sufficient for recruitment and spreading of the MSL complex along the flanking chromatin. This short element is sufficient to activate MSL spreading in the absence of active roX1 transcription.
roX1 and roX2 RNAs are required for the association of male-specific lethal (MSL) proteins with the male X chromosome.
roX1 and roX2 RNAs are redundant and may have a direct function in dosage compensation.
The roX1 gene contains sequences that seem to provide an entry site for the MSL complex to recognize the X chromosome. This site is termed the "roX1 chromatin entry site" (roX1-CES). The roX1-CES provides a nucleation site for extensive spreading (in cis or trans) of the complex into flanking chromatin, even when moved to an autosome.
roX1 encodes an RNA with no apparent reading frame that shows male-specific expression in the adult fly, and is regulated by genes of the dosage compensation pathway. It is closely linked to yin, a female-specific gene expressed in the ovary.
The roX1 gene shows a male-specific expression pattern in adult flies, localising specifically to the male X chromosome. roX1 expression is dependent on Sxl, but is independent of tra activity, and is positively regulated by genes of the dosage compensation system such as mle.
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DRSC - Results from RNAi screens.
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Interactive Fly - A cyberspace guide to Drosophila development and metazoan evolution
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modMine - Data generated by the modENCODE project.
hide Synonyms & Secondary IDs ( 11 )
Reported As
Symbol Synonym
BcDNA:GH10432
 
EG:EG0002.2
 
Name Synonym
RNA on the X1
RNA on the X chromosome 1
Secondary FlyBase IDs
  • FBgn0015564
  • FBgn0052777
  • FBgn0063259
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hide Recent research papers ( 6 )
Larschan et al., 2011, Nature 471(7336): 115--118
X chromosome dosage compensation via enhanced transcriptional elongation in Drosophila. [FBrf0213143]
Gallach et al., 2010, BMC Genomics 11: 169
A sequence motif enriched in regions bound by the Drosophila dosage compensation complex. [FBrf0210447]
Gladstein et al., 2010, PLoS Genet. 6(7): e1001041
Requirement of male-specific dosage compensation in Drosophila females-implications of early X chromosome gene expression. [FBrf0211448]
Park et al., 2010, Biochem. Biophys. Res. Commun. 399(2): 227--231
MSL cis-spreading from roX gene up-regulates the neighboring genes. [FBrf0211621]
Prabhakaran and Kelley, 2010, BMC Biol. 8: 80
A new strategy for isolating genes controlling dosage compensation in Drosophila using a simple epigenetic mosaic eye phenotype. [FBrf0211122]
Schiemann et al., 2010, Biochem. Biophys. Res. Commun. 402(4): 699--704
The importance of location and orientation of male specific lethal complex binding sites of differing affinities on reporter gene dosage compensation in Drosophila. [FBrf0212385]
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All reviews listed in FlyBase were published before 2010