Results 181 to 190 of about 114,858 (292)

TbTim20 facilitates protein import at a low membrane potential in trypanosomes lacking the mitochondrial genome

open access: yesThe FEBS Journal, Volume 293, Issue 6, Page 1771-1784, March 2026.
Protein import into mitochondria relies on TIM complexes and the membrane potential. Trypanosoma brucei has a unique TIM complex, and the role of one subunit, TbTim20, has remained unclear. Here, we show that TbTim20 is essential in cells lacking mitochondrial DNA. The importance of TbTim20 increases as the membrane potential decreases.
Corinne von Känel   +8 more
wiley   +1 more source

Distribution and activity of nitrate and nitrite reductases in the microbiota of the human intestinal tract

open access: yesThe FEBS Journal, Volume 293, Issue 6, Page 1624-1642, March 2026.
Nitrate from food is first converted to nitrite by oral bacteria and then further processed in the intestine. The gut microbiota reduces nitrate and nitrite to ammonia or nitric oxide, preventing the formation of carcinogenic nitrosamines. Our analysis highlights Escherichia coli as a key player in this detoxification process, supported by other ...
Natalie Hager   +4 more
wiley   +1 more source

Expanding the substrate scope of a bacterial monoterpene synthase for the production of sesquiterpenoid and diterpenoid products

open access: yesThe FEBS Journal, Volume 293, Issue 5, Page 1341-1357, March 2026.
We have converted the only known true bacterial monoterpene synthase, cineole synthase from Streptomyces clavuligerus (bCinS, C10 substrate), to a highly competent sesquiterpene synthase (C15) with a minimum number of rational mutations. By comparison with diterpene synthases (C20), we were then able to bestow diterpene synthase activity on bCinS. This
Nicole G. H. Leferink   +3 more
wiley   +1 more source

The fc fragment of IgMs binds C1q to activate the first step of the classical complement pathway, while inhibiting complement‐dependent cytotoxicity

open access: yesThe FEBS Journal, Volume 293, Issue 5, Page 1358-1375, March 2026.
Multimeric IgM‐fragment crystallizable region (Fc) fragments retain the ability to bind C1q and initiate the classical complement pathway, leading to C4 activation and deposition in vitro. However, the Fc cores can also inhibit complement‐dependent cytotoxicity by competing with surface‐bound antibodies for C1q engagement.
Andrea J. Pinto   +9 more
wiley   +1 more source

Dietary anthocyanidin pelargonidin activates G protein‐coupled receptor 35

open access: yesThe FEBS Journal, Volume 293, Issue 5, Page 1386-1399, March 2026.
Pelargonidin, a red‐fruit‐derived anthocyanidin, was newly identified as a dietary agonist of GPR35, a metabolite‐sensing GPCR implicated in anti‐inflammation. Through screening of dietary compounds, pelargonidin emerged as a potent GPR35 agonist, attenuating inflammation in human intestinal cells.
Fumie Nakashima   +11 more
wiley   +1 more source

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