In this biography
Quick facts
- Born
- 28 March 1949
- Birthplace
- Miami, Florida, United States
- Country
- United States
- Nationality
- Not independently established
- Known for
- Discovering clock components including timeless and investigating their interactions with period
Why this life matters
His work extended period-based clock models by identifying additional components and testing how they affected RNA, protein and behaviour.
Timeline
Key moments
Born in Miami
Young was born on 28 March.
Joined Rockefeller
Established his independent research programme.
Medicine Nobel
Shared the prize with Jeffrey Hall and Michael Rosbash.
A geneticist’s route to the biological clock
Michael Young was born in Miami in 1949. He studied at the University of Texas and completed doctoral training there in 1975. Postdoctoral work with David Hogness at Stanford introduced him to molecular approaches that could connect genetic questions with identifiable DNA. He joined Rockefeller University in 1978. These experiences helped establish a research programme in which the fruit fly was both a behavioural model and an organism whose clock-associated genes could be isolated and investigated experimentally.
Period as a molecular research subject
Young’s laboratory worked on the period gene during the early 1980s, alongside the independent Brandeis programme of Jeffrey Hall and Michael Rosbash. Isolating a clock-associated gene made new questions possible: what did it produce, when did its products accumulate, and how did they affect a rhythm? Young’s autobiography describes a progression from genetic analysis toward molecular investigation. The importance of period lay not in providing a finished explanation on its own, but in creating an experimentally accessible starting point for a broader system.
Sources for this section: [5]
Timeless expanded the mechanism
A 1994 paper by Amita Sehgal, Jeffrey Price, Bernice Man and Young described timeless mutants that lacked normal behavioural rhythms and period RNA oscillations. Subsequent studies examined rhythmic timeless expression and its relationship with PER protein. A 1995 collaboration including Nicholas Gekakis, Leslie Saez and Charles Weitz demonstrated physical interaction between TIM and PER in experimental assays. The sequence connected a mutant phenotype with molecular dependence and then with evidence about interacting proteins, rather than treating these as interchangeable discoveries.
A programme recognised with two collaborators
Young shared the 2017 Nobel Prize in Physiology or Medicine with Hall and Rosbash. The recognised discoveries concerned molecular mechanisms controlling circadian rhythm. His contribution illustrates why finding one important gene often opens a research field instead of closing it. A functional clock required relationships among components, regulation of their accumulation and an explanation of timing. The timeless studies helped turn an influential period feedback idea into a more detailed experimental programme, built through the work of multiple laboratories and named collaborators.
Quick answers
Frequently asked questions about Michael Young
- What did timeless add to period research?
- It identified an additional clock component whose disruption affected behaviour and period RNA cycling, followed by studies of TIM’s relationship with PER.
- Was the PER–TIM interaction shown by the 1994 mutant paper alone?
- No. The 1994 phenotype and RNA findings were followed by separate 1995 expression and protein-interaction studies.
Keep exploring
Lives connected to this story
- Barbara McClintock
Compare genetic approaches to biological mechanisms across different model organisms and research questions.
- Michael Rosbash
Compare Young’s timeless programme with the Brandeis work on period RNA feedback.
- Jeffrey Hall
Follow complementary questions about behavioural genetics and the anatomical location of the clock.
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. Sehgal, Price, Man and Young / ScienceLoss of circadian behavioral rhythms and per RNA oscillations in the Drosophila mutant timeless
The 1994 mutant result is separated from 1995 direct protein-interaction evidence.
- 2. Sehgal and colleagues / ScienceRhythmic expression of timeless: a basis for promoting circadian cycles in period gene autoregulation
- 3. Gekakis and colleagues / ScienceIsolation of timeless by PER protein interaction: defective interaction between timeless protein and long-period mutant PERL
- 4. Nobel Prize OutreachMichael Young — Facts
- 5. Nobel Prize OutreachMichael Young — Biographical