Low-frequency RNA-Seq exon junction(s) not annotated.
Gene model reviewed during 5.48
There is only one protein coding transcript and one polypeptide associated with this gene
Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\spn-B using the Feature Mapper tool.
GBrowse - Visual display of RNA-Seq signalsView Dmel\spn-B 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.
Analysis of mutants of the 5 spindle genes (spn-A, spn-B, mus301, spn-D and spn-E) reveals that the group of genes is required for each of the symmetry-breaking steps that generate polarity during axis formation. spn-E is required for the localisation of fs(1)K10, bcd and osk mRNAs, spn-A. spn-B, mus301 and spn-D play an indirect role in this process. Double mutants analysis suggests that spn-B and spn-D genes play a partially redundant role in oocyte positioning.
Mutations in the spn-A, spn-B and spn-D genes result in a very similar phenotype to those in mus301, and in all cases the misplacement of the oocyte has the same consequences on the establishment of AP polarity in the egg chamber, as determined by the slbo expression in the follicle cells and the localization of osk and bcd mRNAs within the oocyte.