In this biography
Quick facts
- Born
- 15 April 1943
- Birthplace
- New York City, United States
- Country
- United States
- Nationality
- Not independently established
- Known for
- Developing methods to identify and study G-protein-coupled receptors, especially adrenergic receptors
Why this life matters
His work made receptors accessible to biochemical investigation while preserving the distinction between detecting binding and measuring its consequences.
Timeline
Key moments
Born in New York
Lefkowitz was born on 15 April.
Joined Duke
Established his first faculty laboratory.
Chemistry Nobel
Shared the prize with Brian Kobilka.
Medical training before a laboratory career
Robert Joseph Lefkowitz was born in New York in 1943. He attended the Bronx High School of Science, studied chemistry at Columbia and received his medical degree in 1966. His early goal was to practise medicine, and he continued clinical training at Columbia-Presbyterian. Research became central during work at the National Institutes of Health beginning in 1968. His autobiography describes entering a laboratory environment where a drug or hormone’s physiological effect was known more clearly than the physical nature of the receptor through which it acted.
A Duke programme to make receptors measurable
Lefkowitz arrived at Duke in 1973. With colleagues including Marc Caron, Chhabirani Mukherjee and Michael Coverstone, he developed radioligand approaches to adrenergic receptors. The 1975 frog-erythrocyte study used labelled alprenolol to identify binding sites with properties expected of the β-adrenergic receptor. The work combined binding behaviour with comparisons to adenylate-cyclase responses. It was not enough to find any molecule that retained radioactivity: the experimental case depended on the characteristics of the sites and their relation to the known biological system.
Receptors, genes and new collaborators
The Duke programme grew from binding assays toward receptor purification and molecular identification. Brian Kobilka joined the laboratory in the 1980s and helped advance the understanding of adrenergic receptors and their relationship to other GPCRs. Kobilka later developed a structural programme at Stanford. The partnership therefore connects successive research questions rather than one unchanging experiment: where is the receptor, what molecular entity is it, and how does its structure participate in signalling? Each question required new methods and the contributions of different colleagues.
Recognition for a sequence of experimental access
Lefkowitz shared the 2012 Nobel Prize in Chemistry with Kobilka. His contribution is especially visible in the transformation of receptors from a physiological concept into biochemical objects that could be labelled, purified and studied. The cardiac and frog-membrane papers also show why the experimental system should be named. Evidence from one preparation can support a mechanistic programme without automatically measuring every receptor in every cell. The legacy includes both powerful new access and the careful comparisons needed to interpret what the assays actually established.
Quick answers
Frequently asked questions about Robert Lefkowitz
- Why did Lefkowitz use radioligands?
- Labelled binding agents helped identify and characterise receptor sites that could not be studied through physiological effects alone.
- Is receptor binding the same thing as cell signalling?
- No. Binding is one step; its relationship to downstream activity requires additional functional evidence.
Keep exploring
Lives connected to this story
- Alfred G. Gilman
Compare work on G proteins with Lefkowitz’s receptor studies; the receptor and its coupling machinery occupy different stages of signalling.
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. Mukherjee, Caron, Coverstone and Lefkowitz / Journal of Biological ChemistryIdentification of adenylate cyclase-coupled β-adrenergic receptors in frog erythrocytes with[3H]alprenolol
The technical example uses the actual 1975 alprenolol papers. The compressed Nobel narrative about labelled adrenaline in 1968 is not used to describe the specific assay here.
- 2. Alexander, Williams and Lefkowitz / PNASIdentification of cardiac β-adrenergic receptors by[3H]alprenolol binding
- 3. Nobel Prize OutreachRobert Lefkowitz — Facts
- 4. Nobel Prize OutreachRobert Lefkowitz — Biographical