Why Does a Drug’s Shape Matter?
Sunday, October 11, 2026179 words3 minutes2064 reads
A molecule can have two mirror-image forms. They contain the same atoms, but their shapes point in opposite ways, like left and right hands. A molecule’s shape can change how it interacts with other things. One version may smell like mint, while its mirror image may smell like caraway.
This difference matters in medicine. A drug molecule’s two forms can have different effects in the body. The two forms can have different effects in the body. So scientists need ways to make the form that can do the intended job.
Henri B. Kagan, from France, and Kenso Soai, from Japan, shared the 2026 Nobel Prize in Chemistry on October 7. Kagan’s research showed that a reaction could favor one mirror form. Later, Soai developed a reaction. It could efficiently produce one form. The work gave chemists powerful tools for making selected molecules and designing medicines.
Living things favor one mirror form of certain molecules. The Nobel-winning research helps explain how chemistry can favor one form, but it does not answer every question about how life first developed this preference.
