Changes in the mitochondrial phosphoproteome during mammalian hibernation.
AuthorsChung DJ, Szyszka B, Brown JC, Hüner NP, Staples JF,
JournalPhysiol Genomics
PubMed ID23572536
'Mammalian hibernation involves periods of substantial suppression of metabolic rate (torpor) allowing energy conservation during winter. In thirteen-lined ground squirrels (Ictidomys tridecemlineatus), suppression of liver mitochondrial respiration during entrance into torpor occurs rapidly (within 2 h) before core body temperature falls below 30°C, whereas reversal of this suppression occurs slowly ... More
Genetic and biochemical analysis of high iron toxicity in yeast: iron toxicity is due to the accumulation of cytosolic iron and occurs under both aerobic and anaerobic conditions.
AuthorsLin H, Li L, Jia X, Ward DM, Kaplan J,
JournalJ Biol Chem
PubMed ID21115478
Iron storage in yeast requires the activity of the vacuolar iron transporter Ccc1. Yeast with an intact CCC1 are resistant to iron toxicity, but deletion of CCC1 renders yeast susceptible to iron toxicity. We used genetic and biochemical analysis to identify suppressors of high iron toxicity in ?ccc1 cells to ... More