Structural sub-assembly of injectisome	Subunit function/role	Common_name_stc	Protein EPEC
Translocators	Translocon pore protein	SctE	EspD
Translocators	Translocon pore protein	SctB	EspB
Translocators	Tip/filament protein	SctA	EspA
Needle	Needle component	SctF	EscF
OM ring	Secretin	SctC	EscC
OM-IM connector	Inner rod	SctI	EscI
IM ring	Lipoprotein ring component	SctJ	EscJ
IM ring	Major IM ring component	SctD	EscD
Export apparatus or Translocase	Translocase channel	SctR	EscR
Export apparatus or Translocase	Translocase channel	SctS	EscS
Export apparatus or Translocase	Translocase channel	SctT	EscT
Export apparatus or Translocase	Minor component, external to channel	SctU	EscU
Export apparatus or Translocase	Major component, external to channel	SctV	EscV
ATPase complex	External stator connecting ATPase and Cytoplasmic ring	SctL	EscL
ATPase complex	Hexameric ring-structure ATPase	SctN	EscN
ATPase complex	Central stalk, inserting in ATPase ring	SctO	EscO
Cytoplasmic ring	Component of 6 Pod assembly	SctQ	SepQ
Cytoplasmic ring	Connector of Pods with SctD	SctK	EscK
Gatekeeper	Gatekeeper/Affinity switch	SctW	SepL
Gatekeeper	Subunit 1 of SctW chaperone heterodimer		SepD
Gatekeeper	Subunit 2 of SctW chaperone heterodimer		CesL