Date: 28.11.2011
Collaborations between Johns Hopkins and National Taiwan University researchers have successfully manipulated the life span of common, single-celled yeast organisms by figuring out how to remove and restore protein functions related to yeast aging.
A chemical variation of a "fuel-gauge" enzyme that senses energy in yeast acts like a life span clock: It is present in young organisms and progressively diminished as yeast cells age.
In a report in the September 16 edition of Cell, the scientists describe their identification of a new level of regulation of this age-related protein variant, showing that when they remove it, the organism's life span is cut short and when they restore it, life span is dramatically extended.
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