Results 51 to 60 of about 10,827 (244)

The flavin reductase ActVB from Streptomyces coelicolor: characterization of the electron transferase activity of the flavoprotein form [PDF]

FEBS Letters, Elsevier, 2005, 579, pp.2817-20, 2015
The flavin reductase ActVB is involved in the last step of actinorhodin biosynthesis in Streptomyces coelicolor. Although ActVB can be isolated with some FMN bound, this form was not involved in the flavin reductase activity. By studying the ferric reductase activity of ActVB, we show that its FMN-bound form exhibits a proper enzymatic activity of ...
arxiv   +1 more source

Structural and mutational analyses of the Leptospira interrogans virulence-related heme oxygenase provide insights into its catalytic mechanism.

PLoS ONE, 2017
Heme oxygenase from Leptospira interrogans is an important virulence factor. During catalysis, redox equivalents are provided to this enzyme by the plastidic-type ferredoxin-NADP+ reductase also found in L. interrogans.
Anabel Soldano, Sebastián Klinke, Lisandro H Otero, Mario Rivera, Daniela L Catalano-Dupuy, Eduardo A Ceccarelli   +5 more
doaj   +1 more source

TAT-mediated transduction of bacterial redox proteins generates a cytoprotective effect on neuronal cells.

PLoS ONE, 2017
Cell penetrating peptides, also known as protein transduction domains, have the capacity to ubiquitously cross cellular membranes carrying many different cargos with negligible cytotoxicity.
Cecilia L Balaban, Claudia Banchio, Eduardo A Ceccarelli   +2 more
doaj   +1 more source

A theoretical multiscale treatment of protein–protein electron transfer: The ferredoxin/ferredoxin-NADP+ reductase and flavodoxin/ferredoxin-NADP+ reductase systems

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2015
In the photosynthetic electron transfer (ET) chain, two electrons transfer from photosystem I to the flavin-dependent ferredoxin-NADP(+) reductase (FNR) via two sequential independent ferredoxin (Fd) electron carriers. In some algae and cyanobacteria (as Anabaena), under low iron conditions, flavodoxin (Fld) replaces Fd as single electron carrier ...
Saen-Oon, Suwipa, Cabeza De Vaca, Israel, Masone, Diego Fernando, Medina, Milagros, Guallar, Victor   +4 more
openaire   +6 more sources

A novel chloroplast super-complex consisting of the ATP synthase and photosystem I reaction center.

PLoS ONE, 2020
Several 'super-complexes' of individual hetero-oligomeric membrane protein complexes, whose function is to facilitate intra-membrane electron and proton transfer and harvesting of light energy, have been previously characterized in the mitochondrial ...
Satarupa Bhaduri, Sandeep K Singh, Whitaker Cohn, S Saif Hasan, Julian P Whitelegge, William A Cramer   +5 more
doaj   +1 more source

Transcriptomic and network analyses reveal distinct nitrate responses in light and dark in rice leaves (Oryza sativa Indica var. Panvel1)

Scientific Reports, 2020
Nitrate (N) response is modulated by light, but not understood from a genome-wide perspective. Comparative transcriptomic analyses of nitrate response in light-grown and etiolated rice leaves revealed 303 and 249 differentially expressed genes (DEGs ...
Ravi Ramesh Pathak, Annie Prasanna Jangam, Aakansha Malik, Narendra Sharma, Dinesh Kumar Jaiswal, Nandula Raghuram   +5 more
doaj   +1 more source

Cyclic Electron Flow-Coupled Proton Pumping in Synechocystis sp. PCC6803 Is Dependent upon NADPH Oxidation by the Soluble Isoform of Ferredoxin:NADP-Oxidoreductase

Microorganisms, 2022
Ferredoxin:NADP-oxidoreductase (FNR) catalyzes the reversible exchange of electrons between ferredoxin (Fd) and NADP(H). Reduction of NADP+ by Fd via FNR is essential in the terminal steps of photosynthetic electron transfer, as light-activated electron ...
Neil T. Miller, Ghada Ajlani, Robert L. Burnap   +2 more
doaj   +1 more source

The NAD(P)H:flavin oxidoreductase from Escherichia coli. Evidence for a new mode of binding for reduced pyridine nucleotides [PDF]

The journal of biological chemistry, American Society for Biochemistry and Molecular Biology, 1999, 274, pp.18252-60, 2015
The NAD(P)H:flavin oxidoreductase from Escherichia coli, named Fre, is a monomer of 26.2 kDa that catalyzes the reduction of free flavins using NADPH or NADH as electron donor. The enzyme does not contain any prosthetic group but accommodates both the reduced pyridine nucleotide and the flavin in a ternary complex prior to oxidoreduction.
arxiv   +1 more source

Proteomic analysis of saffron (Crocus sativus L.) grown under conditions of cadmium toxicity

Bioscience Journal, 2017
Cd is a highly detrimental global environmental pollutant. Plants have evolved complex defense mechanisms as an adaptation to against Cd toxicity. In this study, a pot experiment was performed to evaluate the protein profile of saffron in response to Cd ...
Junfeng Rao, Weide Lv, Jumei Yang
doaj   +3 more sources

Pulse radiolysis studies on superoxide reductase from Treponema pallidum [PDF]

FEBS Letters, Elsevier, 2001, 497, pp.171-3, 2015
Superoxide reductases (SORs) are small metalloenzymes, which catalyze reduction of O2*- to H2O2. The reaction of the enzyme from Treponema pallidum with superoxide was studied by pulse radiolysis methods. The first step is an extremely fast bi-molecular reaction of the ferrous center with O2, with a rate constant of 6 x 10 (8) M(-1) s(-1).
arxiv   +1 more source