1Z9J

Photosynthetic Reaction Center from Rhodobacter sphaeroides

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Reaction center protein L chain	polymer	281	31371.4	1	UniProt (P0C0Y8) Pfam (PF00124)	Rhodobacter sphaeroides (Rhodopseudomonas sphaeroides)	Photosynthetic reaction center L subunit
2	B (B)	Reaction center protein M chain	polymer	307	34476.4	1	UniProt (P0C0Y9) Pfam (PF00124)	Rhodobacter sphaeroides (Rhodopseudomonas sphaeroides)	Photosynthetic reaction center M subunit
3	C (C)	Reaction center protein H chain	polymer	260	28066.3	1	UniProt (P0C0Y7) Pfam (PF03967) Pfam (PF05239)	Rhodobacter sphaeroides (Rhodopseudomonas sphaeroides)	Photosynthetic reaction center H subunit
4	D, E, J, K (A, B)	BACTERIOCHLOROPHYLL A	non-polymer		911.5	4	Chemie (BCL)
5	F, L (A, B)	BACTERIOPHEOPHYTIN A	non-polymer		889.2	2	Chemie (BPH)
6	G, M (A, B)	UBIQUINONE-10	non-polymer		863.3	2	Chemie (U10)
7	H (B)	FE (III) ION	non-polymer		55.8	1	Chemie (FE)
8	I (B)	MANGANESE (II) ION	non-polymer		54.9	1	Chemie (MN)
9	N (B)	water	water		18.0	2	Chemie (HOH)

Sequence modifications

A: 1 - 281 (UniProt: P0C0Y8)

PDB	External Database	Details
His 131	Leu 132	engineered mutation

B: 1 - 307 (UniProt: P0C0Y9)

PDB	External Database	Details
His 160	Leu 161	engineered mutation
Tyr 164	Arg 165	engineered mutation
Glu 168	Met 169	engineered mutation
His 197	Phe 198	engineered mutation
Asp 288	Gly 289	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	93914.1
Non-Polymers*	Number of molecules	10
	Total formula weight	7261.9
All*	Total formula weight	101176.1

*Water molecules are not included.