A subsystem is a set of functional roles that together implement a specific biological process or structural complex. Frequently, subsystems represent the collection of functional roles that make up a metabolic pathway, a complex (e.g., the ribosome), or a class of proteins (e.g., two-component signal-transduction proteins within Staphylococcus aureus).

The SEED currently curates 1516 completed subsystems. Select from the list below to display the according subsystem page.