So far I've found that these are the atom names classified as mainchain atoms by ChimeraX: ['H3', 'HA2', 'H2', 'CA', 'H', 'H1', 'HA', 'C', 'O', 'HA3', 'OXT', 'N'], by using such command: sel #1 & mainchain; info atoms sel.

I'm not sure if there are more atom names classified as mainchain atoms by ChimeraX. Could you please provide me with a comprehensive list of all the atom names of the mainchain atoms (and sideonly atoms as well, if possible) of all types of amino acids?

Thank you.