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Copper is a well-known positive regulator of differentiation and antibiotic production. However, the specific mechanisms buffering cytosolic copper and the biochemical pathways modulated by copper remain poorly understood. Here, we developed a new methodology to quantify cytosolic copper in single spores which allowed us to propose that cytosolic copper modulates asynchrony of germination. We also characterised the SCO2730\/2731 copper chaperone\/P-type ATPase export system. A<jats:italic>Streptomyces coelicolor<\/jats:italic>strain mutated in<jats:italic>SCO2730\/<\/jats:italic><jats:italic>2731<\/jats:italic>shows an important delay in germination, growth and sporulation. Secondary metabolism is heavily enhanced in the mutant which is activating the production of some specific secondary metabolites during its whole developmental cycle, including germination, the exponential growth phase and the stationary stage. Forty per cent of the<jats:italic>S. coelicolor<\/jats:italic>secondary metabolite pathways, are activated in the mutant, including several predicted pathways never observed in the lab (cryptic pathways). Cytosolic copper is precisely regulated and has a pleiotropic effect in gene expression. The only way that we know to achieve the optimal concentration for secondary metabolism activation, is the mutagenesis of<jats:italic>SCO2730\/2731<\/jats:italic>. The<jats:italic>SCO2730\/2731<\/jats:italic>genes are highly conserved. Their inactivation in industrial streptomycetes may contribute to enhance bioactive compound discovery and production.<\/jats:p>","DOI":"10.1038\/s41598-019-40876-0","type":"journal-article","created":{"date-parts":[[2019,3,12]],"date-time":"2019-03-12T11:03:52Z","timestamp":1552388632000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["Cytosolic copper is a major modulator of germination, development and secondary metabolism in Streptomyces coelicolor"],"prefix":"10.1038","volume":"9","author":[{"given":"Nathaly","family":"Gonz\u00e1lez-Qui\u00f1\u00f3nez","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mario","family":"Corte-Rodr\u00edguez","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roberto","family":"\u00c1lvarez-Fern\u00e1ndez-Garc\u00eda","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Beatriz","family":"Rioseras","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar\u00eda Teresa","family":"L\u00f3pez-Garc\u00eda","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gemma","family":"Fern\u00e1ndez-Garc\u00eda","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar\u00eda","family":"Montes-Bay\u00f3n","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Angel","family":"Manteca","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paula","family":"Yag\u00fce","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2019,3,12]]},"reference":[{"key":"40876_CR1","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1038\/ja.2005.1","volume":"58","author":"J Berdy","year":"2005","unstructured":"Berdy, J. 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