1L9B

X-Ray Structure of the Cytochrome-c(2)-Photosynthetic Reaction Center Electron Transfer Complex from Rhodobacter sphaeroides in Type II Co-Crystals

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (L)	REACTION CENTER PROTEIN L CHAIN	polymer	281	31346.4	1	UniProt (P02954) Pfam (PF00124) UniProt (by SIFTS) (P0C0Y8)	Rhodobacter sphaeroides	Photosynthetic reaction center L subunit
2	B (M)	REACTION CENTER PROTEIN M CHAIN	polymer	307	34398.5	1	UniProt (P02953) Pfam (PF00124) UniProt (by SIFTS) (P0C0Y9)	Rhodobacter sphaeroides	Photosynthetic reaction center M subunit
3	C (H)	REACTION CENTER PROTEIN H CHAIN	polymer	260	28066.3	1	UniProt (P11846) Pfam (PF03967) Pfam (PF05239) UniProt (by SIFTS) (P0C0Y7)	Rhodobacter sphaeroides	Photosynthetic reaction center H subunit
4	D (C)	cytochrome c-2	polymer	124	13488.1	1	UniProt (P00095) UniProt (by SIFTS) (P0C0X8)	Rhodobacter sphaeroides
5	E (L)	SODIUM ION	non-polymer		23.0	1	Chemie (NA)
6	F, G, P, Q (L, M)	BACTERIOCHLOROPHYLL A	non-polymer		911.5	4	Chemie (BCL)
7	H, R (L, M)	BACTERIOPHEOPHYTIN A	non-polymer		889.2	2	Chemie (BPH)
8	I, J, K, L, T... (L, M, H)	LAURYL DIMETHYLAMINE-N-OXIDE	non-polymer		229.4	9	Chemie (LDA)
9	M, Z (L, C)	HEPTANE-1,2,3-TRIOL	non-polymer		148.2	2	Chemie (HTO)
10	N (M)	FE (II) ION	non-polymer		55.8	1	Chemie (FE2)
11	O (M)	CHLORIDE ION	non-polymer		35.5	1	Chemie (CL)
12	S (M)	UBIQUINONE-10	non-polymer		863.3	1	Chemie (U10)
13	Y (C)	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	1	Chemie (HEM)
14	AA, BA, CA, DA (L, M, H, C)	water	water		18.0	285	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	107299.3
Non-Polymers*	Number of molecules	22
	Total formula weight	9379.6
All*	Total formula weight	116678.9

*Water molecules are not included.