1IHR

Crystal structure of the dimeric C-terminal domain of TonB

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	TonB protein	polymer	76	8563.9	2	UniProt (P02929) Pfam (PF03544) In PDB	Escherichia coli
2	A, B	BROMIDE ION	non-polymer		79.9	4	Chemie (BR)
3		water	water		18.0	219	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	17127.8
Non-Polymers*	Number of molecules	4
	Total formula weight	319.6
All*	Total formula weight	17447.4

*Water molecules are not included.