th, thread, DIAP-1, DIAP, Drosophila inhibitor of apoptosis 1
ubiquitin ligase that functions as an inhibitor of apoptosis - the inhibition of caspase function is counteracted by proapoptotic proteins Hid, Grim and Reaper - niche signaling promotes stem cell survival in the Drosophila testis via the Jak-STAT target DIAP1
Please see the JBrowse view of Dmel\Diap1 for information on other features
To submit a correction to a gene model please use the Contact FlyBase form
AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100. Some regions with low pLDDT may be unstructured in isolation.
Low-frequency RNA-Seq exon junction(s) not annotated.
Annotated transcripts do not represent all supported alternative splices within 5' UTR.
Gene model reviewed during 5.46
2.0 (longest cDNA)
438 (aa)
Interacts (via BIR 2 domain) with Dronc (via residues 114-125) (PubMed:10675329, PubMed:10984473, PubMed:14517550). Rpr, hid and grim can outcompete Dronc for binding Diap1 therefore removing Diap1-mediated ubiquitination (PubMed:10675329, PubMed:14517550). Interacts (via BIR 2 domain) with HtrA2; this displaces any bound Dronc. Interacts with Strica (PubMed:11550090). The N-terminally cleaved form interacts with Ubr3 (via UBR-type zinc finger) (PubMed:25146930, PubMed:26383956); the interaction promotes the recruitment and uniquitination of substrate capases such as Dronc (PubMed:25146930).
Ubiquitinated and degraded by HtrA2 in apoptotic cells; proteolytic cleavage at specific sites in the BIR domain linker region generating inactive fragments. Mutation of one site reduces but does not abolish cleavage as another site is selected by the protease.
Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\Diap1 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: anlage in statu nascendi
Comment: anlage in statu nascendi
Comment: anlage in statu nascendi
Comment: anlage in statu nascendi
Comment: 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
Expression pattern inferred from unspecified enhancer trap line.
th is expressed throughout the eye imaginal disc and in the embryo in most if not all cells.
Comment: reference states 12-14h APF
Immunostaining of wild-type ovarioles with anti-Diap1 revealed that Diap1 expression was high from the germarium until stage 7. It then decreased during stages 7-8, before increasing again at stages 9-11. Expression decreased again at stage 11, and localization of Diap1 shifted from nuclear to cytoplasmic.
Comment: L2 leg disc
JBrowse - Visual display of RNA-Seq signals
View Dmel\Diap1 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.
The 'l(3)72Dc' (th) complementation group comprises 11 EMS-induced mutant alleles.
Gene expression is increased in response to the presence of two copies of Scer\GAL4hs.PB.
Apoptosis is induced in Kc cells that have been treated with dsRNA made from templates generated with primers directed against this gene.
S2 cells treated with dsRNA directed against this gene show a dramatic increase in cell death.
RNAi generated by PCR using primers directed to this gene causes a cell growth and viability phenotype when assayed in Kc167 and S2R+ cells.
RNAi screen using dsRNA made from templates generated with primers directed against this gene causes a cell growth and viability phenotype when assayed in Kc167 and S2R+ cells.
Loss of function mutations in th result in border follicle cell migration defects.
dsRNA made from templates generated with primers directed against this gene tested in RNAi screen for effects on Kc167 and S2R+ cell morphology.
RNAi screen using dsRNA made from templates generated with primers directed against this gene causes a phenotype when assayed in Kc167 and S2R+ cells: cell number is catastrophically reduced.
The function of the th gene is essential for cell survival.
The product of th can inhibit mammalian cell death induced by overexpression of caspases 1 and 2.
th mutants exhibit cellularization defects.
Identification: Enhancer trap screen designed to discover genes involved in the cellular aspects of defense mechanisms, as well as in melanotic tumor formation processes linked to blood cell disregulation.
Identified during a mutagenesis of the 71F-72D region.
Source for merge of: th l(3)S030605b l(3)S106503
Source for merge of: th l(3)72CDe
Source for identity of: Diap1 th
Changed from 'th' to 'Diap1' to reflect common usage in the literature.