Protein secretion pathways in
bacteria (Sec, Tat, Type I–VI secretion systems)

Protein secretion pathways in bacteria include the Sec and Tat systems for inner membrane translocation and Type I–VI secretion systems that transport proteins across membranes to the cell surface, extracellular environment, or directly into host or competing cells, enabling functions like nutrient acquisition, communication, and virulence.

Microbial Physiology and Metabolism