l(2)35Ce, l(2)br43, dgl, Fusion-1, wizard
transcription factor - zinc finger - regulates the cell cycle in histoblasts - Escargot and Scratch regulate neural commitment by antagonizing Notch-activity in sensory organs - controls the sequential specification of two tracheal tip cell types by suppressing FGF signaling
Please see the JBrowse view of Dmel\esg 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 5.52
2.3 (northern blot)
There is only one protein coding transcript and one polypeptide associated with this gene
470 (aa)
Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\esg 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: 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 head epidermis primordium
Comment: reported as head epidermis primordium
Comment: reported as head epidermis primordium
Comment: reported as procephalon primordium
Comment: reported as dorsal imaginal precursor specific anlage
Comment: reported as ventral imaginal precursor specific anlage
Comment: somatic cells
In embryonic stage 10, esg is expressed in the endoderm. At stage 11, the endoderm has split into an outer layer and an inner layer. esg is lost from the outer layer but is maintained transiently in all cells of the inner layer. At stage 14, esg is expressed in a subset of the inner cells that represent the adult midgut progenitors. In larvae and pupae, esg reporters are observed in adult midgut progenitor cells. In pupae, expression is observed in cells that are precursors to the adult intestinal stem cells.
Expression pattern inferred from unspecified enhancer trap line.
esg transcript is detected in stage 14 of embryogenesis, in presumptive wing, leg, and haltere discs, as well as in the histoblast nests, head, trachea, and the central nervous system. At stage 16, esg transcript is still present in imaginal cells and in the presumptive head. In third instar larvae, esg transcript is expressed in the the central nervous system and in the imaginal discs. esg expression is strongest in the dorsal section of the leg, wing, haltere and eye-antennal discs of third instar larvae.
esg transcripts are expressed throughout embryogenesis and are again detected in pupal stages. In embryos, expression is primarily ectodermal and the pattern is very dynamic. Expression is detected in patches along the dorsal surface in the syncytial blastoderm and at the cellular blastoderm stage. Just prior to gastrulation, the dorsal expression disappears and a grid-like pattern of expression is seen in the neurogenic region of the ventral ectoderm. As germband extension begins, this develops into a pattern of longitudinal stripes in the neurogenic ectoderm. At the beginning of germband retraction, expression is most prominent in the cells of the ventral midline. During germband retraction the pattern is very dynamic including transient expression in cells of the peripheral nervous system. After germband retraction, expression is strong in the leg discs, wing disc, haltere disc and genital disc. Strong expression is also observed in the head region in cells outlining the site of head involution, in the dorsal ridge and in the frontal sac. Staining is also observed in histoblast cells of the abdominal segments.
Comment: expression excluded from center of disc
esg protein labels several cells in the leg primordia in stage 15 embryos. However, esg labeling is excluded from the center of the disc. There is significant overlap with Dll staining outside of the center of the disc. All esg positive cells also express hth a marker for proximal trunk and limb primordia. Therefore, esg serves as a cell specific marker for the proximal leg domain in the trunk region.
At stage 5 of embryogenesis, sna protein is expressed ventrally, in the presumptive mesoderm, while esg protein is expressed in the dorsal region. By stage 13, both sna and esg proteins are expressed in presumptive wing and haltere discs. At stage 15, sna and esg proteins are also expressed in the genital disc. The esg protein is detected in the posterior spiracle and in the presumptive leg discs at stage 15, while the sna protein is expressed in a far smaller number of cells in the presumptive leg discs.
JBrowse - Visual display of RNA-Seq signals
View Dmel\esg in JBrowse2-51
2-48.4
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 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.
polyclonal
The esg product is required for the survival and/or maintenance of secondary and tertiary pigment cells in the eye.
Expression is enriched in embryonic gonads.
Pairing sensitive alleles do not exhibit long-distance silencing interactions with P-element insertions containing the Mcp-element.
Mutants isolated in a screen of the second chromosome identifying genes affecting disc morphology.
esg is a member of the lymph gland enhancer detector strains.
esg is required for tracheal branch fusion and inhibits terminal branching by dorsal branch fusion cells.
esg is a key regulator of cell adhesion and motility in tracheal morphogenesis.
esg is required for the continual renewal of the male germline after pupariation.
esg is required for expression of many of the genes required for fusion of the separate developing tracheal branching units.
A pairing sensitive site (PS site) has been identified in regulatory DNA from the esg gene.
Analysis of mutants suggests that one of the normal functions of esg may be the maintenance of diploidy in imaginal cells.
5 alleles are discussed but are not named.
Source for identity of: esg l(2)35Ce
Source for identity of: esg CG3758