1V9Y

Crystal Structure of the heme PAS sensor domain of Ec DOS (ferric form)

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)	Heme pas sensor protein	polymer	167	19023.7	2	GenBank (16129448) Pfam (PF13426) UniProt (by SIFTS) (P76129)	Escherichia coli
2	C, D (A, B)	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	2	Chemie (HEM)
3	E, F (A, B)	water	water		18.0	349	Chemie (HOH)

Sequence modifications

A, B: 1 - 147 (GenBank: 16129448)

PDB	External Database	Details
Met -19	-	expression tag
Gly -18	-	expression tag
Ser -17	-	expression tag
Ser -16	-	expression tag
His -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
His -12	-	expression tag
His -11	-	expression tag
His -10	-	expression tag
Ser -9	-	expression tag
Ser -8	-	expression tag
Gly -7	-	expression tag
Leu -6	-	expression tag
Val -5	-	expression tag
Pro -4	-	expression tag
Arg -3	-	expression tag
Gly -2	-	expression tag
Ser -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	38047.3
Non-Polymers*	Number of molecules	2
	Total formula weight	1233.0
All*	Total formula weight	39280.3

*Water molecules are not included.