Multiprotein complexes that transport single proteins, multiprotein complexes, and nucleoprotein complexes from the CYTOPLASM into the EXTRACELLULAR SPACE or into recipient cells. T4SSs are found in GRAM-NEGATIVE BACTERIA, while homologous components to T4SSs are found in GRAM-POSTIVE BACTERIA.
Also Known As:
Bacterial Secretion System, Type IV; Bacterial Secretion Systems, Type IV; T4SS Secretion System; Type 4 Secretion System; Type 4 Secretion Systems; Type IV Secretion System; Secretion System, T4SS; System, T4SS Secretion