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Carol Greider

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description Carol Greider Overview

Carol Greider is a pioneering American molecular biologist recognized for her groundbreaking work on chromosome ends. Her research, alongside Jack Szostak and Thomas Cech, revealed the enzyme telomerase responsible for maintaining these vital structures within cells. This discovery earned her a share of the 2009 Nobel Prize in Physiology or Medicine and significantly advanced understanding of aging and cellular processes. It’s particularly relevant to scientists studying cell biology, genetics, and the mechanisms of genomic stability.

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What did Carol Greider discover?

Carol Greider discovered the enzyme telomerase in 1984 while working as a graduate student in Elizabeth Blackburn's laboratory. Telomerase adds repetitive DNA sequences to telomeres—the protective caps at the ends of chromosomes—preventing them from shortening each time a cell divides.

When did Carol Greider win the Nobel Prize?

Greider shared the 2009 Nobel Prize in Physiology or Medicine with Elizabeth Blackburn and Jack Szostak for their discoveries about how telomeres and telomerase protect chromosomes. All three researchers contributed complementary pieces to understanding how cells maintain their genetic material over repeated divisions.

What organism did Carol Greider use in her telomerase research?

Greider made her discovery using Tetrahymena thermophila, a single-celled ciliated organism that has an unusually high number of telomeres and telomerase activity. This made it an ideal model system for studying the biochemistry of chromosome ends, which would have been extremely difficult in mammalian cells with their much larger genomes.

Where has Carol Greider worked?

Greider conducted her PhD research at the University of California, Berkeley, then joined Cold Spring Harbor Laboratory as an independent investigator. She later became a professor at Johns Hopkins University School of Medicine, where she continued her research on telomere biology and its implications for cancer and aging.