Transcriptional regulator with essential functions in the germline and soma (PubMed:9012532, PubMed:12915226, PubMed:10421370). Plays an essential role in regulating the formation of apical cell extensions such as denticles and aristae, and initiating cytoskeletal remodeling during epidermal differentiation (PubMed:12915226, PubMed:10421370). Transcriptional repressor which functions in postembryonic development (PubMed:21527259, PubMed:26383956). The full-length unprocessed form acts as a transcriptional repressor (Transcriptional repressor svb) (PubMed:26383956). Transcriptional activator which initiates trichome development and also promotes tarsal joint development (PubMed:21527259, PubMed:20647469, PubMed:26383956). Has an essential somatic role regulating the tal-dependent formation of trichomes, and initiating cytoskeletal remodeling during epidermal differentiation (PubMed:20647469, PubMed:21527259, PubMed:25344753, PubMed:26383956). Function with SoxN is required for correct denticle morphogenesis on the embryonic epidermis (PubMed:28506986). SoxN and svb appear to act both independently and in conjunction with each other to activate certain genes involved in denticle morphogenesis; Svb appears to be involved in regulating denticle length whereas SoxN regulates the denticle base circumference (PubMed:28506986). Also functions in the development of other apical cell extensions such as bristles (PubMed:25344753). Also has an important role in tarsal joint development, repressing expression of the N ligand Dl and defining its signaling boundary (PubMed:21527259). Transcriptional repressor which is specifically involved in female germline development, where it functions antagonistically to isoform D (PubMed:10648246, PubMed:28059165). Negatively regulates expression of otu and may also have autoregulatory activity (PubMed:10648246). Negatively regulates expression of piwi in the primordial germ cells (PGCs) (PubMed:28059165). Transcriptional activator which is specifically involved in female germline development, where it functions antagonistically to isoform C (PubMed:10648246, PubMed:1712294, PubMed:3428601, PubMed:8652413). Necessary and sufficient for normal oogenesis (PubMed:1712294, PubMed:12051822). Required in the primordial germ cells (PGCs) for normal development of male and female germline cells (PubMed:28059165). Plays a role in germline sex determination (PubMed:2116356). Binds the promoter DNA and positively regulates the transcription of the otu gene in a stage-specific manner (PubMed:10525184, PubMed:11290304, PubMed:9634487). May have autoregulatory activity (PubMed:11290304, PubMed:9634487). Interacts (via N-terminus) with Ubr3; the interaction is mediated by tal. Diffuse nucleoplasmic distribution. Localizes to the nuclear foci. Localizes to the nuclear foci. Diffuse nucleoplasmic distribution (PubMed:20647469). Expressed in germ cell nuclei throughout oocyte development (PubMed:7748792). Not expressed in nuclei of stage 9 oocytes but is expressed in nurse cell nuclei (PubMed:7748792). In stage 12 oocytes it is also detected in the ooplasm (PubMed:7748792). Expressed both maternally and zygotically (PubMed:7935398, PubMed:9012532, PubMed:1712294, PubMed:17246162, PubMed:28059165). Isoform B: Expressed in the notum from early pupation to 36 h after puparium formation, disappearing once epidermal cells develop apical extensions (at protein level) (PubMed:25344753). Isoform B: Expressed in the trichomes of stages 11 and 12 embryos and disappears by stage 15 but the cleaved transcriptional activator form svb is still present (at protein level) (PubMed:20647469). Isoform B: Not detected until the blastoderm stage when it is expressed in the head (PubMed:7748792). Isoform B: No expression in the primordial germ cells (PGCs) (PubMed:28059165). Isoform B: In stage 12 embryos, expressed in the trunk, and in stage 14 embryos expressed in the region of denticle belt setae and dorsal hairs (PubMed:7748792). Isoform B: Not detected in the pole cells throughout embryogenesis (PubMed:7748792). Isoform B: Expressed in the pupal tarsal segments in several segmentally separated stripes (PubMed:21527259). Isoform D: Expressed in the germinal stem cells of the germarium and later in the nurse cells (at protein level) (PubMed:7748792). Isoform D: Uniformly expressed in early cleavage and blastoderm stage embryos (at protein level) (PubMed:7748792). Isoform D: At germ band extension (stage 8), expression levels decrease rapidly and becomes localized to the pole cells in the posterior midgut pocket (at protein level) (PubMed:7748792). Isoform D: In stage 14 embryos, expressed in the forming gonads and some dispersed cells presumed to be pole cells lost during cell migration (at protein level) (PubMed:7748792). Isoform D: Expressed in male and female embryos, and in the germ cell in the gonads of male and female larvae (at protein level) (PubMed:7748792). Isoform D: Detected in adults, and in males is expressed in the apical part of each testis (at protein level) (PubMed:7748792). Isoform D: Expressed during early oogenesis in all female germline cells with slightly lower expression in early egg chambers (stages 2-4) (PubMed:10648246, PubMed:15371353). Isoform D: Weakly expressed in the apex of the testis (PubMed:12051822, PubMed:15371353). Isoform D: Expression levels in PGCs remain constant from stage 4 to stage 11, but decrease from stage 12 to stage 17 (PubMed:28059165). Isoform C: Weakly expressed in female germline stem cells and dividing cystocytes, and is very weak in early to middle stages of egg chamber differentiation (PubMed:10648246, PubMed:15371353). Isoform C: Expression levels are highest from middle to late stages of egg maturity but this is still relatively weak compared to isoform D (PubMed:10648246). Isoform C: Expressed in PGCs throughout embryogenesis but at a much lower level than isoform D (PubMed:28059165). Isoform C: Weakly expressed in the apex of the testis (PubMed:12051822, PubMed:15371353). Only 3 of the 4 C2H2-type zinc-fingers are required for DNA-binding. Based on its marked lack of evolutionary conservation, the fourth zinc-finger is unlikely to be required. N-terminus is proteolytically cleaved and ubiquitinated via a tal-dependent mechanism, leading to the proteolytic degradation of the N-terminus and the production of transcriptional activator shavenbaby, a truncated form with transcriptional activator activity. Adult lethal (PubMed:12915226). In the rare adult escapers, trichomes are often absent from large areas of the thorax and wing, or they are sparse and atrophied (PubMed:12915226). In the aristae, the central core is shorter and lateral cells either fail to develop or are strongly reduced in size (PubMed:12915226). Embryos display a smooth cuticle with sparse atrophied denticles (PubMed:12915226). Isoform D: No visible phenotype (PubMed:3428601). Isoform D: Males are viable whereas females are sterile and do not lay eggs (PubMed:3428601). Isoform D: Ovaries are atrophic and slightly larger than the oviducts at the posterior end of the ovaries, and egg chambers and germline cells are not visible (PubMed:3428601). Isoform D: In female embryos undergoing gastrulation, pole cells undergo cell death and are consequently either absent or reduced in number (PubMed:3428601). Isoform D: Pole cell morphology and their position in the embryo is unaffected (PubMed:3428601). Isoform D: Embryonic germline cells are unaffected while, in female larvae, germline cells undergo cell death and by the third instar stage, the germline cells in most mutants are either absent or reduced in number whereas, in the remaining mutants, the number of germline cells are not affected (PubMed:8652413). Isoform B: RNAi-mediated knockdown results in reduced expression of miniature (m) in the developing embryo (PubMed:28506986). Produced by alternative promoter usage and alternative splicing. Produced by alternative promoter usage. Produced by alternative promoter usage.