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The Role of FtsH Complexes in the Response to Abiotic Stress in Cyanobacteria.
Krynická, Vendula; Komenda, Josef.
Affiliation
  • Krynická V; Institute of Microbiology of the Czech Academy of Sciences, Centre Algatech, Opatovický Mlýn, Novohradská 237, Trebon 37901, The Czech Republic.
  • Komenda J; Institute of Microbiology of the Czech Academy of Sciences, Centre Algatech, Opatovický Mlýn, Novohradská 237, Trebon 37901, The Czech Republic.
Plant Cell Physiol ; 65(7): 1103-1114, 2024 Jul 30.
Article in En | MEDLINE | ID: mdl-38619128
ABSTRACT
FtsH proteases (FtsHs) belong to intramembrane ATP-dependent metalloproteases which are widely distributed in eubacteria, mitochondria and chloroplasts. The best-studied roles of FtsH in Escherichia coli include quality control of membrane proteins, regulation of response to heat shock, superoxide stress and viral infection, and control of lipopolysaccharide biosynthesis. While heterotrophic bacteria mostly contain a single indispensable FtsH complex, photosynthetic cyanobacteria usually contain three FtsH complexes two heterocomplexes and one homocomplex. The essential cytoplasmic FtsH1/3 most probably fulfills a role similar to other bacterial FtsHs, whereas the thylakoid FtsH2/3 heterocomplex and FtsH4 homocomplex appear to maintain the photosynthetic apparatus of cyanobacteria and optimize its functionality. Moreover, recent studies suggest the involvement of all FtsH proteases in a complex response to nutrient stresses. In this review, we aim to comprehensively evaluate the functions of the cyanobacterial FtsHs specifically under stress conditions with emphasis on nutrient deficiency and high irradiance. We also point to various unresolved issues concerning FtsH functions, which deserve further attention.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Stress, Physiological / Bacterial Proteins / Cyanobacteria Language: En Journal: Plant & cell physiology / Plant Cell Physiol / Plant cell physiol Journal subject: BOTANICA Year: 2024 Document type: Article Country of publication: Japón

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Stress, Physiological / Bacterial Proteins / Cyanobacteria Language: En Journal: Plant & cell physiology / Plant Cell Physiol / Plant cell physiol Journal subject: BOTANICA Year: 2024 Document type: Article Country of publication: Japón