A bacterioferritin is a form of oligomeric protein, similar to ferritin, which is found in various bacteria.

The state at which a multi subunit protein containing two or more of the same subunit has folded and conformed to its native state

A capsid is the protein shell of a virus. It consists of several oligomeric structural subunits made of protein called protomers. The observable 3-dimensional morphological subunits, which may or may not correspond to individual proteins, are called capsomeres. The capsid encloses the genetic material of the virus.

Antioxidants, flavonoids including oligomeric proanthocyanidins.

Contain 2 or more polypeptide chains associated by noncovalent forces.Homodimer , heterodimer or tetramer