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1961โ€“

Carol W. Greider

Greider and Blackburn identified telomerase activity in 1984 and published the initial work in 1985.

United States San Diego, CA, USA Updated 7 November 2026
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In this biography

Quick facts

Born
1961
Birthplace
San Diego, CA, USA
Nationality
Not independently established
Known for
Discovery of telomerase with Elizabeth Blackburn and characterisation of its RNA component

Why this life matters

Later work by Blackburn's group provided an additional test through altered RNA and corresponding telomeric DNA sequences, strengthening the template interpretation without changing who performed which study.

Timeline

Key moments

  1. Birth

    Born in San Diego, CA, USA.

  2. Nobel recognition

    Received the Nobel Prize in Physiology or Medicine.

Training in an academic family and a new laboratory

Carol Greider was born in San Diego in 1961 and grew up in Davis, California. Her Nobel autobiography describes parents trained in physics and biological science, alongside a school experience that was not uniformly easy. She received her doctorate at Berkeley in 1987 after working with Elizabeth Blackburn. The career record later includes Cold Spring Harbor Laboratory and Johns Hopkins. Her early research asked how chromosome-end DNA could be extended, a biochemical question related to the maintenance of protective telomeres.

Sources for this section: [2] ยท [1]

From an extension activity to an RNA component

Greider and Blackburn identified telomerase activity in 1984 and published the initial work in 1985. Their later studies investigated the enzyme's composition. A 1989 paper reported an essential RNA component containing a sequence complementary to the telomeric repeat made by the enzyme. This supported a template interpretation and helped turn an observed extension activity into a more specific molecular model. The original abstract used appropriately tentative language about that interpretation; identifying a required component and proving its exact function are distinct steps.

Sources for this section: [4] ยท [1] ยท [6]

A discovery that developed through successive tests

Greider shared the 2009 medicine prize with Blackburn and Jack Szostak. Their linked contributions concern chromosome protection and telomerase, but the research advanced through different experiments and collaborations. Greider's history shows why discovery should not be reduced to a single date or gel. The activity, its biochemical requirements and the proposed role of an internal RNA sequence each required investigation. Later work by Blackburn's group provided an additional test through altered RNA and corresponding telomeric DNA sequences, strengthening the template interpretation without changing who performed which study.

Sources for this section: [1] ยท [5] ยท [6]

Quick answers

Frequently asked questions about Carol W. Greider

What is Carol W. Greider known for?
Discovery of telomerase with Elizabeth Blackburn and characterisation of its RNA component.

Keep exploring

Lives connected to this story

Sources and further reading

Explore the evidence

These references support the biography and offer further reading. Official records, first-person accounts and independent reporting provide different perspectives; image records document attribution and licensing.

  1. 1. Nobel Prize OutreachCarol W. Greider โ€” Facts

    Source scope: Birth/death and award metadata; short official work summary.

  2. 2. Nobel FoundationCarol W. Greider โ€” Biographical

    Source scope: Selected historical passages, as recorded in the research evidence ledger; not a full-document reading claim.

  3. 3. Nobel FoundationCarol W. Greider โ€” Nobel lecture

    Source scope: Selected historical passages, as recorded in the research evidence ledger; not a full-document reading claim.

  4. 4. Greider and Blackburn / Nature, 1989; CSHL repositoryA telomeric sequence in the RNA of Tetrahymena telomerase required for telomere repeat synthesis

    Source scope: Complete primary abstract and bibliographic record read: essential RNA, CAACCCCAA sequence and tentative template interpretation.

  5. 5. Yu, Bradley, Attardi and Blackburn / Nature, 1990In vivo alteration of telomere sequences and senescence caused by mutated Tetrahymena telomerase RNAs

    Source scope: Complete publisher-indexed primary abstract read: mutations in the RNA sequence give corresponding telomeric DNA changes. Full publisher page blocked; no methods or unexamined numerical claims used.

  6. 6. Carol Greider / Nobel lecture, 2009Telomerase discovery: the excitement of putting together pieces of the puzzle

    Source scope: Actual indexed prose passage on sequencing the RNA and constructing an elongation/translocation model; selected passages only, not a claimed full lecture read.

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