GroEL is a molecular chaperone found in bacteria and some mitochondria. It plays a crucial role in protein folding, helping newly synthesized proteins achieve their correct three-dimensional structures. By providing a protective environment, GroEL prevents misfolding and aggregation, which can lead to cellular dysfunction. GroEL works in conjunction with another protein called GroES. Together, they form a complex that encapsulates unfolded proteins, allowing them to fold properly. This process is essential for maintaining cellular health and function, as properly folded proteins are vital for various biological processes.