3K9S

Crystal structure of the peroxide-bound manganese superoxide dismutase.

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	Superoxide dismutase [Mn]	polymer	205	22996.9	4	UniProt (P00448) Pfam (PF00081) Pfam (PF02777) In PDB	Escherichia coli K-12	MnSOD
2	A, B, C, D	MANGANESE (II) ION	non-polymer		54.9	4	Chemie (MN)
3	B, C, D	HYDROGEN PEROXIDE	non-polymer		34.0	3	Chemie (PEO)
4		water	water		18.0	478	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	91987.5
Non-Polymers*	Number of molecules	7
	Total formula weight	321.8
All*	Total formula weight	92309.3

*Water molecules are not included.