When we say proteins have primary, secondary, tertiary and quaternary structures, are we referring to the protein? i.e does a single protein show all these structures? Or is it that some proteins exhibit primary structures while somesecondary….and so on?

When we say proteins have primary, secondary, tertiary and quaternary

1.	When we say proteins have primary, secondary, tertiary and quaternary structures, are we referring to the protein? i.e does a single protein show all these structures? Or is it that some proteins exhibit primary structures while somesecondary….and so on?
Answer» When we say proteins have primary, secondary, tertiary and quaternary structures, are we referring to the protein? i.e does a single protein show all these structures? Or is it that some proteins exhibit primary structures while somesecondary….and so on?