the.com/receptor
A protein playing bouncer, deciding which molecules get into the cellular club.
means A molecule, usually a protein on or in a cell, that recognizes and binds a specific substance and triggers a response inside the cell.
from From Latin 'receptor,' meaning 'one who receives,' built from 'recipere' — 're-' (back) plus 'capere' (to take or seize). The same root gives us 'receive' and 'recipe.' Latin doctors and scientists borrowed 'receptor' for anatomical and chemical 'receivers' well before biologists narrowed it, in the twentieth century, to mean the specific binding sites on cells that catch hormones, drugs, and neurotransmitters like a very picky mitt.
- lock and key
- shape match decides who gets in, not strength
- drugs exploit this
- most medications just flatter or fool receptors
- numbers shift
- cells add or hide receptors to change sensitivity
- smell depends on it
- you own roughly 400 distinct smell receptor types