What maintains the secondary structure of a protein?

hydrogen bonds

Explanation:

Proteins are folded into their secondary structure via hydrogen bonds-between the amino hydrogen and carboxyl oxygen atoms. Secondary structure is an intermediate, before proteins gets its 3D shape (conformation), tertiary and quaternary structure. Mos commonly found secondary structures of the protein are:

c-reactive protein (crp) is an acute phase protein belonging to pentraxin family of proteins, whose levels increases 1000-fold or more in concentration in blood during the occurrence of an injury, inflammation or tissue death.