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Nitrogen-fixing organelle in a marine alga.
Coale, Tyler H; Loconte, Valentina; Turk-Kubo, Kendra A; Vanslembrouck, Bieke; Mak, Wing Kwan Esther; Cheung, Shunyan; Ekman, Axel; Chen, Jian-Hua; Hagino, Kyoko; Takano, Yoshihito; Nishimura, Tomohiro; Adachi, Masao; Le Gros, Mark; Larabell, Carolyn; Zehr, Jonathan P.
Afiliação
  • Coale TH; Ocean Sciences Department, University of California, Santa Cruz, CA, USA.
  • Loconte V; Department of Anatomy, School of Medicine, University of California, San Francisco, CA, USA.
  • Turk-Kubo KA; Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
  • Vanslembrouck B; Ocean Sciences Department, University of California, Santa Cruz, CA, USA.
  • Mak WKE; Department of Anatomy, School of Medicine, University of California, San Francisco, CA, USA.
  • Cheung S; Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
  • Ekman A; Ocean Sciences Department, University of California, Santa Cruz, CA, USA.
  • Chen JH; Institute of Marine Biology and Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan.
  • Hagino K; Department of Anatomy, School of Medicine, University of California, San Francisco, CA, USA.
  • Takano Y; Department of Anatomy, School of Medicine, University of California, San Francisco, CA, USA.
  • Nishimura T; Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
  • Adachi M; Marine Core Research Institute, Kochi University, Nankoku, Kochi, Japan.
  • Le Gros M; Marine Core Research Institute, Kochi University, Nankoku, Kochi, Japan.
  • Larabell C; Fisheries Technology Institute, Japan Fisheries Research and Education Agency, Hatsukaichi, Hiroshima, Japan.
  • Zehr JP; Laboratory of Aquatic Environmental Science, Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, Japan.
Science ; 384(6692): 217-222, 2024 Apr 12.
Article em En | MEDLINE | ID: mdl-38603509
ABSTRACT
Symbiotic interactions were key to the evolution of chloroplast and mitochondria organelles, which mediate carbon and energy metabolism in eukaryotes. Biological nitrogen fixation, the reduction of abundant atmospheric nitrogen gas (N2) to biologically available ammonia, is a key metabolic process performed exclusively by prokaryotes. Candidatus Atelocyanobacterium thalassa, or UCYN-A, is a metabolically streamlined N2-fixing cyanobacterium previously reported to be an endosymbiont of a marine unicellular alga. Here we show that UCYN-A has been tightly integrated into algal cell architecture and organellar division and that it imports proteins encoded by the algal genome. These are characteristics of organelles and show that UCYN-A has evolved beyond endosymbiosis and functions as an early evolutionary stage N2-fixing organelle, or "nitroplast."
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Cianobactérias / Haptófitas / Mitocôndrias / Nitrogênio / Fixação de Nitrogênio Idioma: En Ano de publicação: 2024 Tipo de documento: Article
Texto completo
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PubMed Links
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Cianobactérias / Haptófitas / Mitocôndrias / Nitrogênio / Fixação de Nitrogênio Idioma: En Ano de publicação: 2024 Tipo de documento: Article