8P9R

Structure of the periplasmic domain of ExbD from E. coli in complex with TonB

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C (A, B)	Biopolymer transport protein ExbD	polymer	82	9071.4	2	UniProt (P0ABV2) Pfam (PF02472)	Escherichia coli
2	B (C)	Protein TonB	polymer	23	2481.9	1	UniProt (P02929)	Escherichia coli
3	D, E, F (A, C, B)	water	water		18.0	90	Chemie (HOH)

Sequence modifications

A, B: 61 - 141 (UniProt: P0ABV2)

PDB	External Database	Details
Ser 60	-	expression tag

C: 40 - 62 (UniProt: P02929)

PDB	External Database	Details
Lys 40	Ala 40	conflict
Lys 41	Pro 41	conflict
Lys 61	Val 61	conflict
Lys 62	Gln 62	conflict

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	20624.7
All*	Total formula weight	20624.7

*Water molecules are not included.