Definition
noun
A structural level wherein several proteins (or polypeptide subunits) interact through non-covalent bonds to form one functional protein complex.
Supplement
In proteins, there are four recognized levels of protein structure: primary structure, secondary structure, tertiary structure, and quaternary structure.
A quaternary structure of a protein refers to the assembly of multiple folded protein molecules in a multi-subunit complex.
See also: protein structure
Dictionary > Quaternary structure
You will also like...

Chromosome Mutations
Mutations can also influence the phenotype of an organism. This tutorial looks at the effects of chromosomal mutations, ..

Plant Auxins – Phototropism & Geotropism
Plants produce hormones to regulate their growth. Auxins, for instance, influence plant growth. Know the role of auxin i..

Human Neurology
Human Neurology deals essentially with the nervous system of humans. It also features the various theories put forward b..

Human Perception – Neurology
This tutorial investigates perception as two people can interpret the same thing differently. Know more about human perc..

Biosecurity and Biocontrol
This lesson explores the impact of biosecurity threats, and why they need to be identified and managed. Examples to incl..

Still Freshwater & Plants
Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..