Capsomer

/kæpˈsoʊmər/ noun

Definition

A protein subunit that is the building block of a viral capsid, the protective protein shell surrounding a virus.

Etymology

Formed from capsid (the viral protein coat) and -mer, from Greek 'meros' meaning part. This technical term emerged in virology in the mid-20th century.

Kelly Says

Capsomers are like the LEGO bricks of viruses—they snap together in precise geometric patterns to create perfect icosahedrons or cylinders that protect the virus's genetic material, which is why some viruses look like tiny soccer balls!

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