1K6L

Photosynethetic 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 (L)	PHOTOSYNTHETIC REACTION CENTER L SUBUNIT	polymer	281	31346.4	1	UniProt (P02954) Pfam (PF00124) UniProt (by SIFTS) (P0C0Y8)	Rhodobacter sphaeroides	Reaction center protein L chain
2	B (M)	PHOTOSYNTHETIC REACTION CENTER M SUBUNIT	polymer	314	35365.6	1	UniProt (P02953) Pfam (PF00124) UniProt (by SIFTS) (P0C0Y9)	Rhodobacter sphaeroides	Reaction center protein M chain
3	C (H)	PHOTOSYNTHETIC REACTION CENTER H SUBUNIT	polymer	260	28066.3	1	UniProt (P11846) Pfam (PF03967) Pfam (PF05239) UniProt (by SIFTS) (P0C0Y7)	Rhodobacter sphaeroides	Reaction center protein H chain
4	D, E, J, K (L, M)	BACTERIOCHLOROPHYLL A	non-polymer		911.5	4	Chemie (BCL)
5	F, L (L, M)	BACTERIOPHEOPHYTIN A	non-polymer		889.2	2	Chemie (BPH)
6	G, M (L, M)	UBIQUINONE-10	non-polymer		863.3	2	Chemie (U10)
7	H, P, Q, R (L, M, H)	LAURYL DIMETHYLAMINE-N-OXIDE	non-polymer		229.4	4	Chemie (LDA)
8	I (M)	FE (III) ION	non-polymer		55.8	1	Chemie (FE)
9	N (M)	SPEROIDENONE	non-polymer		595.0	1	Chemie (SPN)
10	O (M)	CARDIOLIPIN	non-polymer		1464.0	1	Chemie (CDL)
11	S, T, U (L, M, H)	water	water		18.0	137	Chemie (HOH)

Sequence modifications

M: 1 - 307 (UniProt: P02953)

PDB	External Database	Details
His 308	-	expression tag
His 309	-	expression tag
His 310	-	expression tag
His 311	-	expression tag
His 312	-	expression tag
His 313	-	expression tag
His 314	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	94778.3
Non-Polymers*	Number of molecules	15
	Total formula weight	10183.6
All*	Total formula weight	104961.9

*Water molecules are not included.