5NBC

Structure of Prokaryotic Transcription Factors

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 (A, B, C, D)	Ferric uptake regulation protein	polymer	140	16169.6	4	UniProt (A0A0E2ZLC3) Pfam (PF01475) UniProt (by SIFTS) (Q5NIN6)	Francisella tularensis
2	E, G, I, K (A, B, C, D)	MANGANESE (II) ION	non-polymer		54.9	4	Chemie (MN)
3	F, H, J, L (A, B, C, D)	ZINC ION	non-polymer		65.4	4	Chemie (ZN)
4	M, N, O, P (A, B, C, D)	water	water		18.0	402	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	64678.5
Non-Polymers*	Number of molecules	8
	Total formula weight	481.4
All*	Total formula weight	65159.9

*Water molecules are not included.