3SIK

Crystal structure of the Bacillus anthracis hemophore IsdX1 complexed with heme

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Conserved domain protein	polymer	132	14851.8	2	UniProt (Q81L44) Pfam (PF05031) UniProt (by SIFTS) (A0A6L8PY92) In PDB	Bacillus anthracis (anthrax anthrax bacterium)	Iron Transport-associated domain protein
2	A, B	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	2	Chemie (HEM)
3		water	water		18.0	87	Chemie (HOH)

Sequence modifications

A, B: 27 - 152 (UniProt: Q81L44)

PDB	External Database	Details
Gly 21	-	expression tag
Ser 22	-	expression tag
His 23	-	expression tag
Met 24	-	expression tag
Ala 25	-	expression tag
Ser 26	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	29703.6
Non-Polymers*	Number of molecules	2
	Total formula weight	1233.0
All*	Total formula weight	30936.6

*Water molecules are not included.