Aging Differentially Regulated Protein Import Into Choloplasts

Created on Nov. 13, 2012, 12:30 a.m. by Hevok & updated by Hevok on May 2, 2013, 4:55 p.m.

Proteins imported into chloroplasts can be divided into three groups: one prefers to be imported into very young chloroplasts, the second one has no special preference and the third group prefer to be imported into older chloroplasts. For each protein the age-selective signal is located within the signal peptide that controls organelle import. Specifically a signal peptide motif is necessary for targeting proteins to older chloroplasts [http://www.biocompare.com/Life-Science-News/124258-Import-Of-Proteins-Into-Chloroplasts-Is-Differentially-Regulated-By-Age/].

Similar kind of regulation might exist for other organelles in other organisms, such as in the mitochondria of humans.

chloroplast.jpg

Tags: aging, senescence, plants
Categories: News
Parent: Aging

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