ban, dme-bantam, EP3208, miR-bantam
a 21 nucleotide microRNA that promotes tissue growth, stimulates cell proliferation and prevents apoptosis - controls of type I and type II central brain neuroblast proliferation
Please see the JBrowse view of Dmel\mir-ban for information on other features
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Locations and structures of miRNA models as mapped by miRBase (FBrf0220601).
Conserved: found throughout the Drosophila genus (FBrf0230987).
.021 (northern blot, sequence analysis)
Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\mir-ban using the Feature Mapper tool.
The testis specificity index was calculated from modENCODE tissue expression data by Vedelek et al., 2018 to indicate the degree of testis enrichment compared to other tissues. Scores range from -2.52 (underrepresented) to 5.2 (very high testis bias).
The ban microRNA is detected during all stages of development by northern analysis although level of expression varies with developmental stage. Expression is highest in 12-24 h embryos and 1st instar larvae. An assay employed a ubiquitously expressed GFP sensor protein whose transcript contained ban target sites and caused silencing of the reporter in the regions where ban microRNA is expressed. This assay indicates that ban microRNA is expressed throughout the wing disc but has the highest expression in areas of proliferation. A similar correlation between ban microRNA expression and cell proliferation was observed in the larval brain.
Comment: low levels
Comment: in posterior part of disc
JBrowse - Visual display of RNA-Seq signals
View Dmel\mir-ban in JBrowse3-0.5
3-0.3
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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 JBrowse for alignment of the cDNAs and ESTs to the gene model.
For each fully sequenced cDNA the DGRC maintains various forms of the cDNA (e.g tagged or untagged) in several different host vectors for subsequent cloning and expression in Drosophila and Drosophila cell lines.
New stable cell line derived from S2-unspecified : S2 cells stably expressing 3' UTRs from miRNA-targeted mRNAS attached to a Luciferase reporter were created. Two of the lines carry the hid 3' UTR with a wild type or mutated MRE (microRNA recognition element) for the miR-2 family. The other two carry the rpr 3' UTR with wild type or mutated MREs for mir-ban.
ban limits IR-induced apoptosis in larval imaginal discs.
Upregulation of ban miRNA suppresses neurodegeneration.
ban activity defines distinct targets that modulate neuro-degeneration.
ban mutant clones grow poorly due to a reduced rate of cell proliferation.
New annotation (CR33559) in release 4.1 of the genome annotation.
ban microRNA simultaneously stimulates cell proliferating and prevent apoptosis.
The annotation for ban has been changed in release 5.31 of the genome annotation, so that instead of representing a mature miRNA it now represents the precursor stem loop pre-miRNA. The symbol of the annotation has been changed from CR33559 to CR43018 to reflect this change.
" BEST:RE64518 " does not encode "ban" function.
Evidence suggests that the P{EP}EP3219EP3219 insertion is probably not an allele of "ban" but instead affects a genetically separable locus; the decrease in wing size seen in EP3219EP3219/Df(3L)banΔ1 flies is due primarily to a reduction in cell size rather than cell number, in contrast to banL1170a/Df(3L)banΔ1, banEP3622/Df(3L)banΔ1 or banEPg30491/Df(3L)banΔ1 flies, where the decrease in wing size is due to a reduction in the number of cells. In addition, EP3219EP3219 combined with banL1170a, banEPg30491 or banEP3622 has little or no effect on growth.
Source for identity of: ban EP3208
Source for identity of: mir-ban ban
Added 'mir-' prefix to be consistent with miRNA naming conventions in FlyBase, and thereby indicate the gene encodes a miRNA in its symbol.
The gene is named "bantam" after the mutant phenotype; mutant flies are smaller than normal.