JNK, DJNK, Jun N-terminal kinase, c-Jun N-terminal kinase, pJNK
MAP kinase homolog - regulates cell shape change and epidermal layer movement during dorsal closure - developmental axon pruning requires destabilization of cell adhesion by JNK signaling - Notch and Mef2 synergize to promote proliferation and metastasis through JNK signal activation in Drosophila
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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.
Annotated transcripts do not represent all supported alternative splices within 5' UTR.
Gene model reviewed during 5.46
Gene model reviewed during 5.55
1.5 (northern blot)
1.85, 1.8 (northern blot)
353 (aa); 49 (kD observed); 49 (kD predicted)
372 (aa)
Interacts with MKP-4 (via tyrosine-protein phosphatase domain); the interaction dephosphorylates bsk.
Dually phosphorylated on Thr-181 and Tyr-183, which activates the enzyme.
The TXY motif contains the threonine and tyrosine residues whose phosphorylation activates the MAP kinases.
Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\bsk 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 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
bsk is expressed ubiquitously at low levels in early embryos. During gastrulation, high levels of bsk mRNA are expressed in cells involved in morphogenetic movements; the cephalic furrow, the anterior and posterior transverse folds, and the leading edge of the ventrolateral epidermis. Begininning in stages 8-9, expression is observed in the CNS and PNS. Expression persists in the CNS through larval stages. Expression is also observed in imaginal discs.
bsk transcripts are present at a low level in early cleavage stage embryos. During germ band extension, bsk transcripts are present in all germ layers. During germ band retraction, intense staining is seen in the epidermis and in the CNS. At stage 14, staining is increased in the CNS and is present in the lateral epidermis extending up to the amnioserosa. At stage 15, strong staining is observed in the CNS, the brain, and some peripheral neurons. Strong staining persists in the fully retracted CNS at stage 16. bsk expression is also observed in third instar larval imaginal discs. High levels of bsk transcripts are seen in the eye and wing imaginal discs. On northern blots, bsk transcripts are observed at all stages of development as well as in fat body and in a hemocyte cell line.
The 1.85kb bsk transcript is detected in early embryos.
bsk protein is detected in the axons of Kenyon cells but not in the cell bodies or dendrites.
bsk protein was detected with an antibody to human JNK1. High levels of active phosphorylated protein were found in adult mushroom body axons. High bsk levels were also observed in the antennal lobe and ellipsoid body. bsk was found in axons throughout development from wandering third instar larval through adult stages.
JBrowse - Visual display of RNA-Seq signals
View Dmel\bsk in JBrowse2-40
2-34.8
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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.
dsRNA made from templates generated with primers directed against this gene tested in RNAi screen for effects on Kc167 and S2R+ cell morphology.
dsRNA made from templates generated with primers directed against this gene is tested in an RNAi screen for effects on actin-based lamella formation.
bsk functions in the establishment of planar polarity in the eye.
Show no or weak ommatidial precursor polarity phenotypes in imaginal tissues.
Genetic and over-expression assays show that dsh protein activates JNK cascades.
Phylogenetic and functional relationships of MAPKs is studied based on 93 non-redundant full length sequences, 2 atomic structures and known functions of MAPKs.
Jra in the embryo is a downstream target of the bsk signal transduction pathway during dorsal closure formation. The function of the bsk/Jra pathway is to control the localised expression of dpp. Both in the embryo and during photoreceptor cell determination Jra is not regulated by a pathway that involved rl.
The bsk pathway is functionally linked to the dpp pathway, the bsk pathway controls dorsal closure at least in part by regulating dpp expression in the leading edge cells. dpp expression is reduced or absent in leading edge cells of embryos lacking bsk function. Transcription factors Jra and aop are required for dorsal closure. Results suggest that the bsk pathway governs dorsal closure at least partially by regulating dpp expression via phosphorylation of Jra and aop.
bsk function is not required for cell fate specification in the eye.
bsk mediates an immune response in cells in culture and morphogenesis in vivo.
bsk embryos display relatively subtle defects in the nervous system, late in development. Brain and gut protrude from an unusually anterior dorsal hole.
Source for merge of: bsk CG5680