Can we tell the function of all proteins from their quaternary structure?

You can not tell the function of the proteins.

Explanation:

the reason is because the proteins have different types of functions and there is alot of proteins in things

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called