What characterizes globular proteins?

Globular proteins are characterized by their diverse coiled and folded shapes, which allow them to perform a variety of functions in biological systems. The three-dimensional structure of globular proteins is essential for their functionality, enabling them to carry out roles such as enzyme activity, transport of molecules, and serving as antibodies. This coiled configuration is conducive to interactions with other molecules, which is critical for their biological activities.

In contrast, elongated chains are more indicative of fibrous proteins, which have a different function and structural purpose. Rigid structures are characteristic of some fibrous proteins and do not represent the flexible and dynamic nature of globular proteins. Moreover, while certain proteins may have energy storage roles, globular proteins often serve a range of functions beyond energy storage, emphasizing their versatility in various biological processes.