A new ABC half-transporter in Leishmania major is involved in resistance to antimony.
Authors:Manzano JI, García-Hernández R, Castanys S, Gamarro F,
Journal:
PubMed ID:23716044
The characterization of ABCI4, a new intracellular ATP-binding cassette (ABC) half-transporter in Leishmania major, is described. We show that ABCI4 is involved in heavy metal export, thereby conferring resistance to Pentostam, to Sb(III), and to As(III) and Cd(II). Parasites overexpressing ABCI4 showed a lower mitochondrial toxic effect of antimony by ... More
Cadmium (Cd) is a widely dispersed environmental agent that causes oxidative toxicity through mechanisms that are sensitive to thioredoxin-1 (Trx1). Trx1 is a cytoplasmic protein that translocates to nuclei during oxidative stress. Recent research shows that interaction of Trx1 with actin plays a critical role in cell survival and that ... More
Cellular sequestration of cadmium in the hyperaccumulator plant species Sedum alfredii.
Authors:Tian S, Lu L, Labavitch J, Yang X, He Z, Hu H, Sarangi R, Newville M, Commisso J, Brown P,
Journal:Plant Physiol
PubMed ID:22025609
Spatial imaging of cadmium (Cd) in the hyperaccumulator Sedum alfredii was investigated in vivo by laser ablation inductively coupled plasma mass spectrometry and x-ray microfluorescence imaging. Preferential Cd accumulation in the pith and cortex was observed in stems of the Cd hyperaccumulating ecotype (HE), whereas Cd was restricted to the ... More
Chemically diverse toxicants converge on Fyn and c-Cbl to disrupt precursor cell function.
Authors:Li Z, Dong T, Pröschel C, Noble M,
Journal:PLoS Biol
PubMed ID:17298174
Identification of common mechanistic principles that shed light on the action of the many chemically diverse toxicants to which we are exposed is of central importance in understanding how toxicants disrupt normal cellular function and in developing more effective means of protecting against such effects. Of particular importance is identifying ... More