4CAS

Serial femtosecond crystallography structure of a photosynthetic reaction center

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	PHOTOSYNTHETIC REACTION CENTER CYTOCHROME C SUBUNIT	polymer	356	39419.2	1	UniProt (P07173) Pfam (PF02276)	BLASTOCHLORIS VIRIDIS	CYTOCHROME C558/C559
2	B (B)	REACTION CENTER PROTEIN L CHAIN	polymer	274	30600.3	1	UniProt (P06009) Pfam (PF00124)	BLASTOCHLORIS VIRIDIS	PHOTOSYNTHETIC REACTION CENTER L SUBUNIT
3	C (C)	REACTION CENTER PROTEIN M CHAIN	polymer	324	36063.4	1	UniProt (P06010) Pfam (PF00124)	BLASTOCHLORIS VIRIDIS	PHOTOSYNTHETIC REACTION CENTER M SUBUNIT
4	D (D)	REACTION CENTER PROTEIN H CHAIN	polymer	258	28557.5	1	UniProt (P06008) Pfam (PF03967) Pfam (PF05239)	BLASTOCHLORIS VIRIDIS	PHOTOSYNTHETIC REACTION CENTER H SUBUNIT
5	E, F, G, H (A)	HEME C	non-polymer		618.5	4	Chemie (HEC)
6	I (A)	DIACYL GLYCEROL	non-polymer		625.0	1	Chemie (DGA)
7	J, K, L, Q (B, C)	BACTERIOCHLOROPHYLL A	non-polymer		911.5	4	Chemie (BCL)
8	M, R (B, C)	BACTERIOPHEOPHYTIN B	non-polymer		887.2	2	Chemie (BPB)
9	N, O, V (B, C)	[(Z)-octadec-9-enyl] (2R)-2,3-bis(oxidanyl)propanoate	non-polymer		356.5	3	Chemie (MPG)
10	P (B)	FE (II) ION	non-polymer		55.8	1	Chemie (FE2)
11	S (C)	MENAQUINONE-7	non-polymer		649.0	1	Chemie (MQ7)
12	T (C)	15-cis-1,2-dihydroneurosporene	non-polymer		540.9	1	Chemie (NS5)
13	U (C)	(2E,6E,10E,14E,18E,22E,26E)-3,7,11,15,19,23,27,31-OCTAMETHYLDOTRIACONTA-2,6,10,14,18,22,26,30-OCTAENYL TRIHYDROGEN DIPHOSPHATE	non-polymer		722.9	1	Chemie (OTP)
14	W, X (C)	PHOSPHATE ION	non-polymer		95.0	2	Chemie (PO4)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	134640.3
Non-Polymers*	Number of molecules	20
	Total formula weight	11747.7
All*	Total formula weight	146388.0

*Water molecules are not included.