{"id":12108,"date":"2025-09-26T16:44:59","date_gmt":"2025-09-26T19:44:59","guid":{"rendered":"https:\/\/fenati.org.br\/?p=12108"},"modified":"2025-09-29T11:31:10","modified_gmt":"2025-09-29T14:31:10","slug":"cientistas-descobrem-virus-dimensoes-pantanal","status":"publish","type":"post","link":"https:\/\/homolog.fenati.org.br\/en\/cientistas-descobrem-virus-dimensoes-pantanal\/","title":{"rendered":"Cientistas descobrem v\u00edrus com dimens\u00f5es recorde no Pantanal"},"content":{"rendered":"<p><strong>V\u00edrus &#8211;<\/strong> Uma equipe de cientistas fez uma descoberta surpreendente durante a coleta de amostras de \u00e1gua do rio Paraguai, no<a href=\"https:\/\/pt.wikipedia.org\/wiki\/Pantanal\"> Pantanal<\/a>. Eles identificaram um novo v\u00edrus, classificado como o maior com cauda j\u00e1 descrito at\u00e9 hoje.<\/p>\n<p>Nomeado de Naiav\u00edrus, o organismo mede cerca de 1.350 nan\u00f4metros (nm). Embora invis\u00edvel a olho nu, essa dimens\u00e3o \u00e9 muito superior \u00e0 m\u00e9dia dos v\u00edrus conhecidos, que varia entre 20 e 200 nm.<\/p>\n<p><a href=\"https:\/\/fenati.org.br\/do-codigo-nocaute-batalhas-robos-viram-atracao\/\"><strong>LEIA: Do c\u00f3digo ao nocaute: batalhas de rob\u00f4s viram atra\u00e7\u00e3o no cora\u00e7\u00e3o da tecnologia<\/strong><\/a><\/p>\n<h4>V\u00edrus n\u00e3o oferece risco a humanos<\/h4>\n<p>De acordo com informa\u00e7\u00f5es da Ag\u00eancia FAPESP, os pesquisadores analisaram 439 amostras at\u00e9 encontrar vest\u00edgios do v\u00edrus na regi\u00e3o de Porto Murtinho, no Mato Grosso do Sul. Diferente de agentes patog\u00eanicos que afetam pessoas, como influenza ou coronav\u00edrus, o Naiav\u00edrus infecta exclusivamente amebas.<\/p>\n<p>Al\u00e9m do tamanho inusitado, sua estrutura inclui um corpo recoberto por um \u201cmanto\u201d e uma cauda flex\u00edvel que pode se dobrar e alongar. Esse ap\u00eandice atua como ferramenta para se aproximar das amebas e facilitar a infec\u00e7\u00e3o.<\/p>\n<p>Outro aspecto de destaque \u00e9 o tamanho do genoma: quase 1 milh\u00e3o de pares de bases de DNA. Grande parte dos genes n\u00e3o possui equival\u00eancia conhecida, e alguns desempenham fun\u00e7\u00f5es que antes se acreditava restritas a organismos complexos, como bact\u00e9rias e eucariotos \u2014 o que sugere reflexos de processos evolutivos antigos.<\/p>\n<h4>Import\u00e2ncia da descoberta<\/h4>\n<p>Os cientistas apontam que as prote\u00ednas do Naiav\u00edrus t\u00eam origem em uma diverg\u00eancia muito remota, pr\u00f3xima ao surgimento da vida na Terra. H\u00e1 expectativa de que esses componentes possam ser explorados para o desenvolvimento de f\u00e1rmacos e enzimas de relev\u00e2ncia biotecnol\u00f3gica.<\/p>\n<p>A pesquisa tamb\u00e9m pode contribuir para desvendar quest\u00f5es centrais da biologia, como a eucariog\u00eanese \u2014 o processo de forma\u00e7\u00e3o dos n\u00facleos em c\u00e9lulas primitivas eucari\u00f3ticas.<\/p>\n<p>Os resultados foram divulgados em artigo publicado na revista Nature Communications.<\/p>\n<p><em><strong>(Com informa\u00e7\u00f5es de Olhar Digital)<\/strong><\/em><br \/>\n<em><strong>(Foto: Reprodu\u00e7\u00e3o\/Freepik\/vladimirzotov)<\/strong><\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>Microrganismo possui cauda flex\u00edvel e manto protetor, e \u00e9 o maior de sua classe j\u00e1 registrado<\/p>","protected":false},"author":11,"featured_media":12109,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42],"tags":[13],"class_list":["post-12108","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticias","tag-sindical"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - 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