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Har Gobind Khorana
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Science & innovation · Punjab

Cracking the code of life, three letters at a time

The son of a village record-keeper in Punjab went on to help read the language in which every living thing is written. Har Gobind Khorana's tool was patience: building RNA one letter at a time.

Har Gobind Khoranaहरगोविंद खुराना
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Har Gobind Khorana. Photo: archival image; credit being confirmed

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Born
9 January 1922, Raipur, Punjab (now Pakistan)
Died
2011
Field
Molecular biology, genetics
Institutions
University of Wisconsin; MIT
Honours
Nobel Prize in Physiology or Medicine 1968; Albert Lasker Award
1968Nobel Prize
3letters of RNA per amino acid

A patwari’s son

Har Gobind Khorana was born on 9 January 1922 in Raipur, Punjab, now in Pakistan. His father was a village patwari who valued education highly.

After studying at Punjab University, he went to the University of Liverpool on a scholarship and earned his PhD. For a family of limited means, education changed the whole course of his life.

Reading the code

After research in Europe and Canada, his laboratory in Wisconsin focused on the chemistry of the genetic code. Alongside the complementary work of Marshall Nirenberg and Robert Holley, Khorana used synthetic RNA sequences and controlled biochemical systems to show which nucleotide triplets specify which amino acid.

His strategy of building defined sequences let the code be mapped systematically. In 1968 the three scientists shared the Nobel Prize.

Making genes

Later, Khorana’s group did pioneering work on synthetic genes and the biology of membrane proteins. Genetic engineering, synthetic biology and molecular diagnostics today rest on ideas in whose history he holds a leading place.

His life shows how precision and tool-building speed up scientific breakthroughs, and how early investment in education can carry talent to a global stage.

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