4K8F

Structure of the heme domain of CooA from Rhodospirillum rubrum

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	Transcriptional regulator, Crp/Fnr family	polymer	136	15389.7	4	UniProt (Q2RUG3) In PDB	Rhodospirillum rubrum
2	A, B, C, D	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	4	Chemie (HEM)
3		water	water		18.0	28	Chemie (HOH)

Sequence modifications

A, B, C, D: 2 - 131 (UniProt: Q2RUG3)

PDB	External Database	Details
His 132	-	expression tag
His 133	-	expression tag
His 134	-	expression tag
His 135	-	expression tag
His 136	-	expression tag
His 137	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	61558.7
Non-Polymers*	Number of molecules	4
	Total formula weight	2465.9
All*	Total formula weight	64024.6

*Water molecules are not included.