3AQ6

Crystal structure of truncated hemoglobin from Tetrahymena pyriformis, Fe(III) 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	Group 1 truncated hemoglobin	polymer	121	13706.9	2	UniProt (P17724) Pfam (PF01152) In PDB	Tetrahymena pyriformis	Truncated Hb, Hemoglobin, Myoglobin
2	A, B	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	2	Chemie (HEM)
3		water	water		18.0	186	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	27413.7
Non-Polymers*	Number of molecules	2
	Total formula weight	1233.0
All*	Total formula weight	28646.7

*Water molecules are not included.