7OIU

Inner Membrane Complex (IMC) protomer structure (TrwM/VirB3, TrwK/VirB4, TrwG/VirB8tails) from the fully-assembled R388 type IV secretion system determined by cryo-EM.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (C)	TrwM protein	polymer	104	12292.6	1	UniProt (O50329) Pfam (PF05101)	Escherichia coli
2	B, C (A, B)	TrwK protein	polymer	823	93769.9	2	UniProt (O50330) Pfam (PF03135) Pfam (PF19044)	Escherichia coli
3	D, E, F (D, E, F)	TrwG protein	polymer	231	25800.0	3	UniProt (O50335) Pfam (PF04335)	Escherichia coli

Sequence modifications

C: 1 - 104 (UniProt: O50329)

PDB	External Database	Details
Trp 24	Leu 24	conflict
Val 26	Glu 26	conflict

D, E, F: 1 - 231 (UniProt: O50335)

PDB	External Database	Details
Ala 188	Arg 188	conflict

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	277232.4
All*	Total formula weight	277232.4

*Water molecules are not included.