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Synthetic colors pollute the environment and have harmful effects. Microorganism-produced pigments are more cost-effective and environmentally benign than animal, plant, and synthetic pigments. The present study focuses on isolating a pigment-producing actinomycete, a novel violet pigment produced by a local isolate strain identified as <jats:italic>S. zaomycetitus<\/jats:italic> GH90, using 16\u00a0S rRNA from Egyptian soil. Optimizing violet pigment yield necessitated the precise adjustment of various growth parameters. <jats:italic>Streptomyces zaomyceticus<\/jats:italic> GH90 achieved optimal production under specific conditions. pH 8.0, agitation at 180\u00a0rpm, temperature at 37\u00a0\u00b0C, 1.5% starch concentration, ammonium sulfate, dipotassium hydrogen phosphate, 2% inoculum, 20% medium volume, and a 10-day incubation period. Ethanol served as the solvent for pigment extraction. Thermal analysis indicated no degradation at 40\u00a0\u00b0C. At 50\u00a0\u00b0C, retention was 98.7% and remained stable at 97.5% when subjected to temperatures between 60 and 80\u00a0\u00b0C for 1\u00a0h. Retention remained above 91% at temperatures of 90 and 100\u00a0\u00b0C, indicating significant heat stability. The pigment preserved its color integrity in an aqueous solution at pH 8.0. The UV\u2013Vis spectra exhibited a maximum wavelength (\u03bbmax) at 580\u00a0nm. LC\u2013MS analysis revealed the presence of indole, scopoletin, myricetin, and phosphorylated compounds, which are likely contributors to color and bioactivity. The pigment exhibited superior textile dyeing characteristics, including vivid coloration, high durability, and significant antibacterial activity, establishing it as a versatile and effective dye for antimicrobial textiles. Moreover, the most prevalent molecule, has high permeability, moderate solubility, and selective enzyme interactions, making it a suitable therapeutic candidate. Molecular docking shows significant OMPA and OprD binding affinities, supported by hydrophobic, \u03c0-\u03c0 stacking, and hydrogen bond interactions. The obtained results clearly show how important <jats:italic>Streptomyces<\/jats:italic> is as a source of bioactive metabolites with potential applications.<\/jats:p>","DOI":"10.1186\/s12866-025-04329-1","type":"journal-article","created":{"date-parts":[[2025,10,3]],"date-time":"2025-10-03T03:40:07Z","timestamp":1759462807000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Streptomyces zaomycetitus strain GH90: a source of violet pigment with metabolic profiling and potential application in textile: in vitro supported by in silico studies and molecular docking"],"prefix":"10.1186","volume":"25","author":[{"given":"Gehad H.","family":"El Sayed","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohamed","family":"Fadel","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohamed","family":"Marzouk","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hend M.","family":"Ahmed","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nervana S.","family":"Diab","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ahmed A.","family":"Hamed","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,10,3]]},"reference":[{"key":"4329_CR1","doi-asserted-by":"publisher","first-page":"6255","DOI":"10.3390\/app11146255","volume":"11","author":"HB Slama","year":"2021","unstructured":"Slama HB, Bouket AC, Pourhassan Z, Alenezi FN, Silini A, Cherif-Silini H, Oszako T, Luptakova L, Goli \u00b4nska P, Belbahri L. 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