4HF0

Crystal Structure of Apo IscR

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	HTH-type transcriptional regulator IscR	polymer	141	14930.7	2	UniProt (P0AGK8) Pfam (PF02082)	Escherichia coli
2	C (B)	SULFATE ION	non-polymer		96.1	1	Chemie (SO4)
3	D, E (A, B)	water	water		18.0	37	Chemie (HOH)

Sequence modifications

A, B: 1 - 133 (UniProt: P0AGK8)

PDB	External Database	Details
Ala 92	Cys 92	engineered mutation
Ala 98	Cys 98	engineered mutation
Ala 104	Cys 104	engineered mutation
Gly 134	-	expression tag
Gly 135	-	expression tag
His 136	-	expression tag
His 137	-	expression tag
His 138	-	expression tag
His 139	-	expression tag
His 140	-	expression tag
His 141	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	29861.4
Non-Polymers*	Number of molecules	1
	Total formula weight	96.1
All*	Total formula weight	29957.5

*Water molecules are not included.