2Y3Q

1.55A structure of apo bacterioferritin from E. coli

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D, E...	BACTERIOFERRITIN	polymer	158	18518.0	12	UniProt (P0ABD3) Pfam (PF00210) In PDB	ESCHERICHIA COLI	BFR, CYTOCHROME B-1, CYTOCHROME
2	E, L, F, G, A...	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	12	Chemie (HEM)
3	D, K, E, L, F...	SULFATE ION	non-polymer		96.1	19	Chemie (SO4)
4	D, K, L, E, F...	ACETATE ION	non-polymer		59.0	12	Chemie (ACT)
5	D, K, L, I	2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL	non-polymer		209.2	4	Chemie (BTB)
6		water	water		18.0	2978	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	12
	Total formula weight	222216.2
Non-Polymers*	Number of molecules	47
	Total formula weight	10768.5
All*	Total formula weight	232984.7

*Water molecules are not included.