Calcium- and potassium-permeable plasma membrane transporters are activated by copper inArabidopsisroot tips: linking copper transport with cytosolic hydroxyl radical production

2012 ◽  
Vol 36 (4) ◽  
pp. 844-855 ◽  
Author(s):  
ANA RODRIGO-MORENO ◽  
NURIA ANDRÉS-COLÁS ◽  
CHARLOTTE POSCHENRIEDER ◽  
BENET GUNSÉ ◽  
LOLA PEÑARRUBIA ◽  
...  
Keyword(s):  
Plasma Membrane ◽  
Hydroxyl Radical ◽  
Copper Transport ◽  
Membrane Transporters ◽  
Radical Production

Oxygen activation at the plasma membrane: relation between superoxide and hydroxyl radical production by isolated membranes

Planta ◽  
2011 ◽  
Vol 234 (1) ◽  
pp. 35-45 ◽  
Author(s):  
Eiri Heyno ◽  
Véronique Mary ◽  
Peter Schopfer ◽  
Anja Krieger-Liszkay
Keyword(s):  
Plasma Membrane ◽  
Hydroxyl Radical ◽  
Oxygen Activation ◽  
Radical Production

Efficient hydroxyl radical production with Sodium salts of surfactants ozonation for treatment of organic acid pollutants in wastewater

2021 ◽  
Vol 22 ◽  
pp. 101451
Author(s):  
Faheem Nawaz ◽  
Barkat ullah Khan ◽  
Hamid Ullah ◽  
Zia Ul Islam ◽  
Ghulam ullah Khan ◽  
...  
Keyword(s):  
Hydroxyl Radical ◽  
Organic Acid ◽  
Sodium Salts ◽  
Radical Production

Effect of zinc on superoxide-dependent hydroxyl radical production in vitro

1993 ◽  
Vol 38 (3) ◽  
pp. 273-287 ◽  
Author(s):  
C. Coudray ◽  
S. Rachidi ◽  
A. Favier
Keyword(s):  
Hydroxyl Radical ◽  
Radical Production

Identification of ferrichrome- and ferrioxamine B-mediated iron uptake by Aspergillus fumigatus

2016 ◽  
Vol 473 (9) ◽  
pp. 1203-1213 ◽  
Author(s):  
Yong-Sung Park ◽  
Ju-Yeon Kim ◽  
Cheol-Won Yun
Keyword(s):  
Gene Expression ◽  
Plasma Membrane ◽  
Aspergillus Fumigatus ◽  
Virulence Factors ◽  
Membrane Transporters ◽  
Yeast Cells ◽  
Double Deletion ◽  
Ferrioxamine B ◽  
Uptake Activity ◽  
Opportunistic Fungal Pathogen

Aspergillus fumigatus is an opportunistic fungal pathogen for immunocompromised patients, and genes involved in siderophore metabolism have been identified as virulence factors. Recently, we identified the membrane transporters sit1 and sit2, which are putative virulence factors of A. fumigatus; sit1 and sit2 are homologous to yeast Sit1, and sit1 and sit2 gene expression was up-regulated after iron depletion. When expressed heterologously in Saccharomyces cerevisiae, sit1 and sit2 were localized to the plasma membrane; sit1 efficiently complemented ferrichrome (FC) and ferrioxamine B (FOB) uptake in yeast cells, whereas sit2 complemented only FC uptake. Deletion of sit1 resulted in a decrease in FOB and FC uptake, and deletion of sit2 resulted in a decrease in FC uptake in A. fumigatus. It is of interest that a sit1 and sit2 double-deletion mutant resulted in a synergistic decrease in FC uptake activity. Both sit1 and sit2 were localized to the plasma membrane in A. fumigatus. The expression levels of the sit1 and sit2 genes were dependent on hapX under low-but not high-iron conditions. Furthermore, mirB, and sidA gene expression was up-regulated and sreA expression down-regulated when sit1 and sit2 were deleted. Although sit1 and sit2 failed to affect mouse survival rate, these genes affected conidial killing activity. Taken together, our results suggest that sit1 and sit2 are siderophore transporters and putative virulence factors localized to the plasma membrane.

Comment on "Atmospheric Hydroxyl Radical Production from Electronically Excited NO2 and H2O"

Science ◽  
2009 ◽  
Vol 324 (5925) ◽  
pp. 336b-336b ◽  
Author(s):  
S. Carr ◽  
D. E. Heard ◽  
M. A. Blitz
Keyword(s):  
Hydroxyl Radical ◽  
Radical Production ◽  
Electronically Excited
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