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	PHOTOSYNTHETIC REACTION CENTER CYTOCHROME C SUBUNIT	polymer	356	39419.2	1	UniProt (P07173) Pfam (PF02276) In PDB	BLASTOCHLORIS VIRIDIS	CYTOCHROME C558/C559
2	B	REACTION CENTER PROTEIN L CHAIN	polymer	274	30600.3	1	UniProt (P06009) Pfam (PF00124) In PDB	BLASTOCHLORIS VIRIDIS	PHOTOSYNTHETIC REACTION CENTER L SUBUNIT
3	C	REACTION CENTER PROTEIN M CHAIN	polymer	324	36063.4	1	UniProt (P06010) Pfam (PF00124) In PDB	BLASTOCHLORIS VIRIDIS	PHOTOSYNTHETIC REACTION CENTER M SUBUNIT
4	D	REACTION CENTER PROTEIN H CHAIN	polymer	258	28557.5	1	UniProt (P06008) Pfam (PF03967) Pfam (PF05239) In PDB	BLASTOCHLORIS VIRIDIS	PHOTOSYNTHETIC REACTION CENTER H SUBUNIT
5	A	HEME C	non-polymer		618.5	4	Chemie (HEC)
6	A	DIACYL GLYCEROL	non-polymer		625.0	1	Chemie (DGA)
7	B, C	BACTERIOCHLOROPHYLL A	non-polymer		911.5	4	Chemie (BCL)
8	B, C	BACTERIOPHEOPHYTIN B	non-polymer		887.2	2	Chemie (BPB)
9	B, C	[(Z)-octadec-9-enyl] (2R)-2,3-bis(oxidanyl)propanoate	non-polymer		356.5	3	Chemie (MPG)
10	B	FE (II) ION	non-polymer		55.8	1	Chemie (FE2)
11	C	MENAQUINONE-7	non-polymer		649.0	1	Chemie (MQ7)
12	C	15-cis-1,2-dihydroneurosporene	non-polymer		540.9	1	Chemie (NS5)
13	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	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.