1IZL

Crystal Structure of Photosystem II

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, J	Photosystem II: Subunit PsbA	polymer	360	39792.4	2	UniProt (P51765) Pfam (PF00124) In PDB	Thermosynechococcus vulcanus	Photosystem Q(B) protein
2	B, L	Photosystem II: Subunit PsbB	polymer	472	49478.6	2	Pfam (PF00421) UniProt (by SIFTS) (Q8DIQ1) In PDB	Thermosynechococcus elongatus	photosystem II core light harvesting protein
3	C, M	Photosystem II: Subunit PsbC	polymer	473	49868.9	2	Pfam (PF00421) UniProt (by SIFTS) (Q8DIF8) In PDB	Thermosynechococcus elongatus	photosystem II CP43 protein
4	D, N	Photosystem II: Subunit PsbD	polymer	352	39388.2	2	GenBank (22297998) Pfam (PF00124) UniProt (by SIFTS) (Q8CM25) In PDB	Thermosynechococcus elongatus	photosystem II reaction center D2 protein
5	E, P	Photosystem II: Subunit PsbE	polymer	83	9449.6	2	GenBank (22299084) Pfam (PF00283) Pfam (PF00284) UniProt (by SIFTS) (Q8DIP0) In PDB	Thermosynechococcus elongatus	cytochrome b559 alpha subunit
6	F, Q	Photosystem II: Subunit PsbF	polymer	44	4936.7	2	GenBank (22299085) Pfam (PF00283) UniProt (by SIFTS) (Q8DIN9) In PDB	Thermosynechococcus elongatus	cytochrome b559 beta subunit
7	G, R	Photosystem II: Subunit PsbG	polymer	220	18741.0	2		Thermosynechococcus elongatus
8	H, S	Photosystem II: Subunit PsbH	polymer	33	2826.5	2		Thermosynechococcus elongatus
9	I, T	Photosystem II: Subunit PsbI	polymer	26	2230.7	2		Thermosynechococcus elongatus
10	K, W	Photosystem II: Subunit PsbK	polymer	37	4101.9	2	UniProt (Q9F1K9) Pfam (PF02533) In PDB	Thermosynechococcus elongatus	Photosystem II reaction center protein K
11	O, Y	Photosystem II: Subunit PsbO	polymer	205	17464.5	2		Thermosynechococcus elongatus
12	U, Z	Photosystem II: Subunit PsbU	polymer	97	8273.2	2		Thermosynechococcus elongatus
13	V, 0	Photosystem II: Subunit PsbV	polymer	137	15148.3	2	UniProt (P56150) Pfam (PF14495) UniProt (by SIFTS) (P0A387) In PDB	Thermosynechococcus vulcanus	Cytochrome c-550
14	X, 1	Photosystem II: Subunit PsbX	polymer	25	2145.6	2		Thermosynechococcus elongatus
15	J, A	MANGANESE (II) ION	non-polymer		54.9	8	Chemie (MN)
16	B, M, C, J, A...	CHLOROPHYLL A	non-polymer		893.5	72	Chemie (CLA)
17	J, A, N, D	PHEOPHYTIN A	non-polymer		871.2	4	Chemie (PHO)
18	N, D	FE (III) ION	non-polymer		55.8	2	Chemie (FE)
19	N, D	2-[(3-HYDROXY-2-METHYL-5-PHOSPHONOOXYMETHYL-PYRIDIN-4-YLMETHYL)-AMINO]-2-METHYL-SUCCINIC ACID	non-polymer		378.3	2	Chemie (PLA)
20	D, K	BETA-CAROTENE	non-polymer		536.9	2	Chemie (BCR)
21	P, 0, E, V	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	4	Chemie (HEM)

Contents of the asymmetric unit

Polymers	Number of chains	28
	Total formula weight	527692.1
Non-Polymers*	Number of molecules	94
	Total formula weight	72663.4
All*	Total formula weight	600355.5

*Water molecules are not included.