Modular protein domains

Modular protein domains are specific structural units within a protein that can function somewhat independently. Think of them like building blocks or modules, each with a unique role—such as binding to other molecules or providing structural support. These modules can be mixed and matched, allowing proteins to have versatile functions by combining different domains. This modularity makes proteins adaptable and efficient in carrying out complex biological tasks, much like how different components in a machine work together to perform specific functions.