4CHU

E. coli IscR-DNA complex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	HTH-TYPE TRANSCRIPTIONAL REGULATOR ISCR	polymer	163	17367.4	2	UniProt (C3SZN7) Pfam (PF02082) In PDB	ESCHERICHIA COLI K-12	ISCR
2	C	HYA PROMOTER FRAGMENT	polymer	27	8296.4	1	GenBank (557270520)	ESCHERICHIA COLI K-12
3	D	HYA PROMOTER FRAGMENT	polymer	27	8292.4	1	GenBank (557270520)	ESCHERICHIA COLI K-12
4		water	water		18.0	15	Chemie (HOH)

Sequence modifications

A, B: 0 - 162 (UniProt: C3SZN7)

PDB	External Database	Details
Gly 1	-	insertion
Ser 92	Cys 92	engineered mutation
Ser 98	Cys 98	engineered mutation
Ser 104	Cys 104	engineered mutation

C: 1 - 27 (GenBank: 557270520)

PDB	External Database	Details
Dg 1	-	insertion

D: 1 - 27 (GenBank: 557270520)

PDB	External Database	Details
Dc 1	-	insertion

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	51323.6
All*	Total formula weight	51323.6

*Water molecules are not included.