el, elbow, BG:DS06238.3
Gene model reviewed during 5.51
None of the polypeptides share 100% sequence identity.
Self-associates. Interacts with gro and noc.
Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\elB using the Feature Mapper tool.
Comment: reported as posterior spiracle specific anlage
In second instar eye-antenna discs, elB and noc reporter expression is restricted to the eye primordium. In early third instar discs, expression in the distal part of the antenna primordium is observed. In the eye-head primordium, elB and noc are expressed in the hth domain that indicates the proliferative region. In late third instar larval discs, expression levels remain high in the region anterior to the morphogenetic furrow, at more elevated levels in cells that co-express hth and tsh and at lower levels in the pre-proneural region. Thus elB and noc are expressed at higher levels in the proliferative region of the eye-head primordium.
GBrowse - Visual display of RNA-Seq signalsView Dmel\elB in GBrowse 2
Please Note FlyBase no longer curates genomic clone accessions so this list may not be complete
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.
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.
The noc and elB paralogs interact with hth to correctly specify the photoreceptors which detect polarised light at the dorsal rim of the retina, being involved in specifying both morphological and molecular fate. noc and elB also antagonise the transcriptional activator and repressor functions of oc in the retina through distinct protein domains.
Identification: screen for mutants in opsin regulation and photoreceptor cell type specification.
Regulator of inner photoreceptor opsin genes.
The elbow locus is made up of two genes, elA and elB, each of which has a distinct phenotype when mutant. Mutations in elA have a strong phenotype with marked disruptions of the wing. Mutations in elB are weak, mainly affecting the alula and wing bristles. elA and elB are dominant enhancers of each other.
Part of the "elbow-noc" complex.
Wings extended and bent backward, often warped and shortened; sometimes blistered and nicked. Alulae reduced in size with reduced number of marginal bristles -- may fuse with wing blade. Venation reduced by terminal shortening of L5 and of crossveins. Halteres reduced, often to stubs. Eye size decreased (variable, even with strong alleles). Weak alleles may overlap wild type and show only a reduction in number of marginal bristles on alulae. Some alleles may be semi-lethal when hemizygous. Class (i) alleles enhance nocSco, are semi-lethal with 35Ba alleles of noc and show a weak noc phenotype when heterozygous with strong noc alleles or noc deletions. Class (ii) alleles do not interact with these loci. All alleles more extreme when hemizygous; strong alleles nearly apterous.
E. M. Wallace, 1st April 1935.