The gene Heterogeneous nuclear ribonucleoprotein at 87F is referred to in FlyBase by the symbol Dmel\Hrb87F (CG12749, FBgn0004237). It is a protein_coding_gene from Drosophila melanogaster. There is experimental evidence that it has the molecular function: sequence-specific DNA binding. There is experimental evidence that it is involved in the biological process: mitosis; regulation of alternative mRNA splicing, via spliceosome; compound eye morphogenesis; neurogenesis. 17 alleles are reported. No phenotypic data is available. It has 4 annotated transcripts and 4 annotated polypeptides. Protein features are: Nucleotide-binding, alpha-beta plait; RNA recognition motif domain. Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of very high expression to a trough of moderately high expression. Peak expression observed within 00-18 hour embryonic stages, during late larval stages, during early pupal stages, in adult female stages. 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: larval central nervous system, larval hindgut, larval Malpighian tubules, larval/adult salivary gland, larval trachea, adult female reproductive system, adult male accessory gland, larval carcass. 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, adult hindgut, adult Malpighian tubules, adult heart, larval/adult fat body, adult testis, adult carcass. Comments on Affy2 ProbeSet: ProbeSet 1639118_a_at completely aligns to an exonic region common to each of the 3 FlyBase-annotated transcript isoforms of Hrb87F. Gene sequence location is 3R:9482568..9486253.
User Contributed Data
Phenotypic Description from the Red Book (Lindsley
& Zimm 1992)
Gene/Allele symbols may differ
from current usage
Hrb2: hnRNA-binding protein 2 (S. Haynes)
Homology to the mammalian A and B hnRNP proteins
based on amino acid sequence inferred from nucleotide
sequence.
Recent Updates
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FB2013_03
FB2013_02
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hnRNP-specific mAbs were obtained and used to purify hnRNP complexes from S2 cells. hnRNP proteins were identified on the basis of nucleoplasmic localization, association with nascent transcripts, crosslinking to poly(A)-containing RNA in living cells, and amino acid sequence. Staining of polytene chromosomes reveals that Hrb87F protein is associated with actively transcribing loci.
2.3kb Hrb87F transcripts are expressed throughout development. Transcripts are abundant in ovaries and early embryos, decline in late embryos and early larvae, and then increase again from the second larval instar stage.
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: larval central nervous system, larval hindgut, larval Malpighian tubules, larval/adult salivary gland, larval trachea, adult female reproductive system, adult male accessory gland, larval carcass. 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, adult hindgut, adult Malpighian tubules, adult heart, larval/adult fat body, adult testis, 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
1389.725
Larval Midgut
436.5
Larval Hindgut
668.7
Larval Malpighian Tubules
992.1
Larval Fat Body
498.8
Larval Salivary Gland
1093.6
Larval Trachea
847.75
Larval Carcass
950.925
Adult Head
288.3
Adult Eye
337.125
Adult Brain
371.4
Adult Thoracic-Abdominal Ganglion
405
Adult Crop
406.1
Adult Midgut
334.9
Adult Hindgut
353.4
Adult Malpighian Tubules
300.5
Adult Fat Body
379.1
Adult Salivary Gland
594.1
Adult Heart
345.075
Adult VirginFemale Spermatheca
833.6
Adult InseminatedFemale Spermatheca
868.3
Adult Ovary
913.9
Adult Testis
126.9
Adult Male Accessory Gland
544.7
Adult Carcass
261.7
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
(1389.725)
Larval Midgut
436.5
Larval Hindgut
(668.7)
Larval Malpighian Tubules
(992.1)
Larval Fat Body
498.8
Larval Salivary Gland
(1093.6)
Larval Trachea
(847.75)
Larval Carcass
(950.925)
Adult Head
288.3
Adult Eye
337.125
Adult Brain
371.4
Adult Thoracic-Abdominal Ganglion
405
Adult Crop
406.1
Adult Midgut
334.9
Adult Hindgut
353.4
Adult Malpighian Tubules
300.5
Adult Fat Body
379.1
Adult Salivary Gland
(594.1)
Adult Heart
345.075
Adult VirginFemale Spermatheca
(833.6)
Adult InseminatedFemale Spermatheca
(868.3)
Adult Ovary
(913.9)
Adult Testis
126.9
Adult Male Accessory Gland
(544.7)
Adult Carcass
261.7
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
(1389.725)
Larval Midgut
436.5
Larval Hindgut
668.7
Larval Malpighian Tubules
992.1
Larval Fat Body
498.8
Larval Salivary Gland
(1093.6)
Larval Trachea
847.75
Larval Carcass
950.925
Adult Head
288.3
Adult Eye
337.125
Adult Brain
371.4
Adult Thoracic-Abdominal Ganglion
405
Adult Crop
406.1
Adult Midgut
334.9
Adult Hindgut
353.4
Adult Malpighian Tubules
300.5
Adult Fat Body
379.1
Adult Salivary Gland
594.1
Adult Heart
345.075
Adult VirginFemale Spermatheca
833.6
Adult InseminatedFemale Spermatheca
868.3
Adult Ovary
913.9
Adult Testis
126.9
Adult Male Accessory Gland
544.7
Adult Carcass
261.7
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
1389.725
Larval Midgut
436.5
Larval Hindgut
668.7
Larval Malpighian Tubules
992.1
Larval Fat Body
498.8
Larval Salivary Gland
1093.6
Larval Trachea
847.75
Larval Carcass
950.925
Adult Head
288.3
Adult Eye
337.125
Adult Brain
371.4
Adult Thoracic-Abdominal Ganglion
405
Adult Crop
406.1
Adult Midgut
334.9
Adult Hindgut
353.4
Adult Malpighian Tubules
300.5
Adult Fat Body
379.1
Adult Salivary Gland
594.1
Adult Heart
345.075
Adult VirginFemale Spermatheca
833.6
Adult InseminatedFemale Spermatheca
868.3
Adult Ovary
913.9
Adult Testis
126.9
Adult Male Accessory Gland
544.7
Adult Carcass
261.7
Expression Level Scale
Very high
log, scaled to maximum expression level
Tissue
Expression Level
Larval Central Nervous System
1389.725
Larval Midgut
436.5
Larval Hindgut
668.7
Larval Malpighian Tubules
992.1
Larval Fat Body
498.8
Larval Salivary Gland
1093.6
Larval Trachea
847.75
Larval Carcass
950.925
Adult Head
288.3
Adult Eye
337.125
Adult Brain
371.4
Adult Thoracic-Abdominal Ganglion
405
Adult Crop
406.1
Adult Midgut
334.9
Adult Hindgut
353.4
Adult Malpighian Tubules
300.5
Adult Fat Body
379.1
Adult Salivary Gland
594.1
Adult Heart
345.075
Adult VirginFemale Spermatheca
833.6
Adult InseminatedFemale Spermatheca
868.3
Adult Ovary
913.9
Adult Testis
126.9
Adult Male Accessory Gland
544.7
Adult Carcass
261.7
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
(1389.725)
Larval Midgut
436.5
Larval Hindgut
668.7
Larval Malpighian Tubules
(992.1)
Larval Fat Body
498.8
Larval Salivary Gland
(1093.6)
Larval Trachea
(847.75)
Larval Carcass
(950.925)
Adult Head
288.3
Adult Eye
337.125
Adult Brain
371.4
Adult Thoracic-Abdominal Ganglion
405
Adult Crop
406.1
Adult Midgut
334.9
Adult Hindgut
353.4
Adult Malpighian Tubules
300.5
Adult Fat Body
379.1
Adult Salivary Gland
594.1
Adult Heart
345.075
Adult VirginFemale Spermatheca
(833.6)
Adult InseminatedFemale Spermatheca
(868.3)
Adult Ovary
(913.9)
Adult Testis
126.9
Adult Male Accessory Gland
544.7
Adult Carcass
261.7
Expression Level Scale
None
Low
Moderate
High
log, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
1389.725
Larval Midgut
436.5
Larval Hindgut
668.7
Larval Malpighian Tubules
992.1
Larval Fat Body
498.8
Larval Salivary Gland
1093.6
Larval Trachea
847.75
Larval Carcass
950.925
Adult Head
288.3
Adult Eye
337.125
Adult Brain
371.4
Adult Thoracic-Abdominal Ganglion
405
Adult Crop
406.1
Adult Midgut
334.9
Adult Hindgut
353.4
Adult Malpighian Tubules
300.5
Adult Fat Body
379.1
Adult Salivary Gland
594.1
Adult Heart
345.075
Adult VirginFemale Spermatheca
833.6
Adult InseminatedFemale Spermatheca
868.3
Adult Ovary
913.9
Adult Testis
126.9
Adult Male Accessory Gland
544.7
Adult Carcass
261.7
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
1389.725
Larval Midgut
436.5
Larval Hindgut
668.7
Larval Malpighian Tubules
992.1
Larval Fat Body
498.8
Larval Salivary Gland
1093.6
Larval Trachea
847.75
Larval Carcass
950.925
Adult Head
288.3
Adult Eye
337.125
Adult Brain
371.4
Adult Thoracic-Abdominal Ganglion
405
Adult Crop
406.1
Adult Midgut
334.9
Adult Hindgut
353.4
Adult Malpighian Tubules
300.5
Adult Fat Body
379.1
Adult Salivary Gland
594.1
Adult Heart
345.075
Adult VirginFemale Spermatheca
833.6
Adult InseminatedFemale Spermatheca
868.3
Adult Ovary
913.9
Adult Testis
126.9
Adult Male Accessory Gland
544.7
Adult Carcass
261.7
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 very high expression to a trough of moderately high expression. Peak expression observed within 00-18 hour embryonic stages, during late larval stages, during early pupal stages, in adult female stages.
[download data (TSV)]
Please Note FlyBase no
longer curates genomic clone accessions so this list
may not be complete
cDNA Clones ( 135 )
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.
Loss of Hrb87F slows development, with a significant reduction in adult life span, decreased female fecundity and high sensitivity to starvation and thermal stresses. In the absence of Hrb87F, the nucleoplasmic omega speckles are nearly completely disrupted.
The consequences of HRB overexpression and absence in living flies is examined. Overexpression of Hrb87F does alter the splicing of Ddc pre-mRNA, indicating the overexpressed protein can reproduce the in vitro effect of excess protein.
Complete deletion of Hrb87F has no obvious defect on viability or fertility, but when in combined with hypodosage of Hrb98DE leads to reduced male and female fertility.
Isolated from an early embryonic cDNA library under reduced stringency conditions, using an Hrb98DE cDNA probe. Some Canton S strains have a 412 element insertion in the 3' untranslated region.
Crawford et al., 2012, Cell Death Differ. 19(12): 2040--2048
Conservation of caspase substrates across metazoans suggests hierarchical importance of signaling pathways over specific targets and cleavage site motifs in apoptosis. [FBrf0220233]
Dwivedi et al., 2012, PLoS ONE 7(5): e37113
In Vivo Effects Of Traditional Ayurvedic Formulations in Drosophila melanogaster Model Relate with Therapeutic Applications. [FBrf0218341]
Krauchunas et al., 2012, Dev. Biol. 370(1): 125--134
Protein phosphorylation changes reveal new candidates in the regulation of egg activation and early embryogenesis in D. melanogaster. [FBrf0219342]
Singh and Lakhotia, 2012, J. Biosci., Bangalore 37(4): 659--678
The hnRNP A1 homolog Hrp36 is essential for normal development, female fecundity, omega speckle formation and stress tolerance in Drosophila melanogaster. [FBrf0219285]
Tan et al., 2012, Hum. Mol. Genet. 21(1): 57--65
Retrotransposon activation contributes to fragile X premutation rCGG-mediated neurodegeneration. [FBrf0216915]
Verma et al., 2012, genesis 50(2): 86--101
DNApol‐ϵ gene is indispensable for the survival and growth of Drosophila melanogaster. [FBrf0217413]
Manita et al., 2011, Bioorg. Med. Chem. 19(24): 7690--7697
Camptothecin (CPT) directly binds to human heterogeneous nuclear ribonucleoprotein A1 (hnRNP A1) and inhibits the hnRNP A1/topoisomerase I interaction. [FBrf0216744]
Neumüller et al., 2011, Cell Stem Cell 8(5): 580--593
Genome-Wide Analysis of Self-Renewal in Drosophila Neural Stem Cells by Transgenic RNAi. [FBrf0213621]
Onorati et al., 2011, PLoS Genet. 7(5): e1002096
The ISWI Chromatin Remodeler Organizes the hsrω ncRNA–Containing Omega Speckle Nuclear Compartments. [FBrf0213856]
Shukla and Tapadia, 2011, Europ. J. Cell Biol. 90(1): 72--80
Differential localization and processing of apoptotic proteins in Malpighian tubules of Drosophila during metamorphosis. [FBrf0212365]