Tag Archives: eukaryotic cells

Researcher Discovers Mitochondria Share an Ancestor with SAR11

By Guest PostJuly 27, 2011Scienceeukaryotic cells, evolutionary event, marine bacteria, mitochondria

Billions of years ago, an astounding evolutionary event occurred: certain bacteria became obliged to live inside other cells, thus starting a chain of events that resulted in what is now the mitochondria, an organelle found in all eukaryotic cells. A recent study by researchers at the University of Hawaiʻi at Mānoa and the Oregon State University (OSU) provides strong evidence that mitochondria share a common evolutionary ancestor with a lineage of marine bacteria known as SAR11, arguably the most abundant group of microorganisms on Earth. (more…)

A Cellular Housekeeper, and Potential Target of Obesity Drugs, Caught in Action

By Guest PostAugust 2, 2010Scienceberkeley lab, bing jap, cancer, crystal chuang, enzyme, eukaryotic cells, lawrence berkeley national laboratory, molecular breaks down, obesity, peter walian, proteins, roy kaltschmidt, tripeptidyl peptidase II

Scientists from the U.S. Department of Energy’s Lawrence Berkeley National Laboratory have obtained the closest look yet of how a gargantuan molecular machine breaks down unwanted proteins in cells, a critical housekeeping chore that helps prevent diseases such as cancer.

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