Space-filling model of the L -lysine molecule, C ₆ H ₁₄ N ₂ O ₂ , in the zwitterionic form found in the crystal structure at room temperature (283-303 K) determined by powder X‐ray diffraction and reported in Angew. Chem. Int. Ed. (2015), 54 , 3973-3977 ( CSD entry CUFFUG ).

Colour code:

Carbon, C: grey

Hydrogen, H: white

Nitrogen, N: blue

Oxygen, O: red