nem, fam, l(2)05475
novel protein - SH3 binding domain, ankyrin repeats and cytoskeletal attachment domain - controller of cell fate during asymmetric cell division
Please see the JBrowse view of Dmel\insc for information on other features
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AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100. Some regions with low pLDDT may be unstructured in isolation.
Gene model reviewed during 5.51
Low-frequency RNA-Seq exon junction(s) not annotated.
Shares 5' UTR with upstream gene.
Gene model reviewed during 5.53
4.3 (northern blot)
4.2 (northern blot)
There is only one protein coding transcript and one polypeptide associated with this gene
767 (aa); 84 (kD predicted)
859 (aa)
Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\insc 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).
Comment: reported as procephalic ectoderm anlage in statu nascendi
Comment: reported as procephalic ectoderm anlage in statu nascendi
Comment: reported as procephalic ectoderm anlage in statu nascendi
Comment: reported as procephalic ectoderm anlage
Comment: reported as procephalic ectoderm anlage
Comment: reported as procephalic ectoderm anlage
Comment: reported as procephalic ectoderm anlage
Comment: reported as procephalic ectoderm primordium
Comment: reported as procephalic ectoderm primordium
Comment: reported as procephalic ectoderm primordium
Comment: reported as procephalic ectoderm primordium
Comment: reported as procephalic ectoderm primordium
Comment: reported as procephalic ectoderm primordium
Comment: reported as procephalon primordium
Comment: reported as procephalon primordium
Comment: reported as procephalon primordium
Comment: reported as procephalon primordium
Comment: reported as procephalon primordium
Comment: reported as procephalon primordium
Comment: reported as dorsal/lateral sensory complexes
Comment: reference states 3-12 hr AEL
Comment: reference states 4-20 hr AEL
insc transcript is detected in 4-20 hr embryos, and in adult male and female flies. insc transcript is first detected during the cellular blastoderm stage within the procephalic neurogenic region. The region of expression extends dorsally at stage 6/7. Expression is subsequently detected in individual cells within the embryonic brain until late embryogenesis. During germ band extension, insc transcript expression is detected in the neurectoderm, and in early germ band extended embryos, the full wave of delaminating neuroblasts express insc transcript. In the developing CNS, most, if not all, neuroblasts express insc. Transient expression in some putative PNS precursors (external sense organ precursors and Ich5 precursor) is detected in 5 hr embryos. No CNS expression is detected after stage 14 of embryogenesis.
insc RNA is localized to the apical cortex of neuroblasts during interphase. During mitosis, it is located in the cytoplasm.
plasma membrane | apical & proximal to
cytoplasm
insc protein localizes to the apical end of GMC1-1.
insc protein is first detected at stage 6 in the procephalic neurectoderm and later in the delaminating neuroblasts of the ventral nerve cord. At late stage 10, insc protein is detected in two cells per segment in the lateral epidermis that are thought to be the first two cells that will give rise to the larval peripheral sense organs. Expression is lost in developing sense organs by the time of dorsal closure but remains in the CNS until after it has condensed. In stages 10-13, expression is seen in mesodermal cells presumed to be muscle precursors and in the posterior midgut primordia. Strong expression is seen at stage 15 in the pharynx, gastric caecae, hindgut, tracheal branches, and Malpighian tubules. insc protein is also detected in pupal wing discs older than about 20hr after puparium formation. It is present in the intervein spaces and is excluded from the veins themselves.
JBrowse - Visual display of RNA-Seq signals
View Dmel\insc in JBrowsePlease 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 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.
insc has a role in augmenting metaphase spindle length in embryonic neuroblasts.
insc regulates the apical-basal polarity of the pIIb division in the vp1-vp4a lineages in the embryo.
The central third of the insc coding region is sufficient for the normal glia-neuron cell-fate choice of the NB6-4T daughter cell.
Embryos deficient for insc function show failure of spindle rotation in neuroblasts.
Mutant embryos show lack of muscles without disturbance of myoblast fusion or epidermis pattern.
insc is a neural precursor gene and encodes a candidate for a cytoskeletal adaptor protein.
Ectopic expression of insc in other epithelial cells leads to spindle reorientation.
insc may be required for the development of the somatic musculature and the chordotonal organs of the PNS, but it is not involved in the development of the visceral mesoderm and the dorsal vessel.
The CNS and PNS of insc mutants are morphologically abnormal, resulting from general disorganization of the neuroblast array and defective neuroblast morphology and abnormal sense organ morphology. The numbers of particular neuroblasts, and their ganglion mother cell progeny, are also faulty.
The insc product may affect cytoskeletal organization and/or asymmetric division of neuronal precursors.