1DGB

HUMAN ERYTHROCYTE CATALASE

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 (A, B, C, D)	CATALASE	polymer	498	56713.4	4	UniProt (P04040) Pfam (PF00199) Pfam (PF06628)	Homo sapiens (human)
2	E, G, H, J (A, B, C, D)	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	4	Chemie (HEM)
3	F, I (A, C)	NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE	non-polymer		745.4	2	Chemie (NDP)
4	K, L, M, N (A, B, C, D)	water	water		18.0	1109	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	226853.8
Non-Polymers*	Number of molecules	6
	Total formula weight	3956.8
All*	Total formula weight	230810.5

*Water molecules are not included.