7D1T

Cryo-EM Structure of PSII at 1.95 angstrom resolution

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, a	Photosystem II protein D1	polymer	334	37029.2	2	UniProt (P51765) Pfam (PF00124) In PDB	Thermosynechococcus vulcanus	PSII D1 protein,Photosystem II Q(B) protein
2	B, b	Photosystem II CP47 reaction center protein	polymer	505	56068.7	2	UniProt (D0VWR1) Pfam (PF00421) In PDB	Thermosynechococcus vulcanus	PSII 47 kDa protein,Protein CP-47
3	C, c	Photosystem II CP43 reaction center protein	polymer	451	49207.3	2	UniProt (D0VWR7) Pfam (PF00421) In PDB	Thermosynechococcus vulcanus	PSII 43 kDa protein,Protein CP-43
4	D, d	Photosystem II D2 protein	polymer	342	38419.9	2	UniProt (D0VWR8) Pfam (PF00124) In PDB	Thermosynechococcus vulcanus	PSII D2 protein,Photosystem Q(A) protein
5	E, e	Cytochrome b559 subunit alpha	polymer	81	9321.5	2	UniProt (P12238) Pfam (PF00283) Pfam (PF00284) In PDB	Thermosynechococcus vulcanus	PSII reaction center subunit V
6	F, f	Cytochrome b559 subunit beta	polymer	34	3868.6	2	UniProt (P12239) Pfam (PF00283) In PDB	Thermosynechococcus vulcanus	PSII reaction center subunit VI
7	H, h	Photosystem II reaction center protein H	polymer	63	7057.3	2	UniProt (P19052) Pfam (PF00737) In PDB	Thermosynechococcus vulcanus	PSII-H
8	I, i	Photosystem II reaction center protein I	polymer	36	4196.0	2	UniProt (P12240) Pfam (PF02532) In PDB	Thermosynechococcus vulcanus	PSII-I,PSII 4.4 kDa protein
9	J, j	Photosystem II reaction center protein J	polymer	37	3756.4	2	UniProt (Q7DGD4) Pfam (PF01788) In PDB	Thermosynechococcus vulcanus	PSII-J
10	K, k	Photosystem II reaction center protein K	polymer	37	4101.9	2	UniProt (P19054) Pfam (PF02533) In PDB	Thermosynechococcus vulcanus	PSII-K
11	L, l	Photosystem II reaction center protein L	polymer	37	4299.0	2	UniProt (P12241) Pfam (PF02419) In PDB	Thermosynechococcus vulcanus	PSII-L
12	M, m	Photosystem II reaction center protein M	polymer	34	3835.5	2	UniProt (P12312) Pfam (PF05151) In PDB	Thermosynechococcus vulcanus	PSII-M
13	O, o	Photosystem II manganese-stabilizing polypeptide	polymer	244	26651.7	2	UniProt (D0VWR2) Pfam (PF01716) In PDB	Thermosynechococcus vulcanus	MSP,Extrinsic protein O of oxygen-evolving complex
14	T, t	Photosystem II reaction center protein T	polymer	31	3777.6	2	UniProt (P12313) Pfam (PF01405) In PDB	Thermosynechococcus vulcanus	PSII-Tc
15	U, u	Photosystem II 12 kDa extrinsic protein	polymer	97	10966.3	2	UniProt (P56152) Pfam (PF06514) In PDB	Thermosynechococcus vulcanus	PS II complex 12 kDa extrinsic protein,PSII-U,Extrinsic protein U of oxygen-evolving complex
16	V, v	Cytochrome c-550	polymer	137	15148.3	2	UniProt (P0A387) Pfam (PF14495) In PDB	Thermosynechococcus vulcanus	Cytochrome c550,Low-potential cytochrome c,Extrinsic protein V of oxygen-evolving complex
17	Y, y	Photosystem II reaction center protein Ycf12	polymer	30	3228.0	2	UniProt (D0VWR3) Pfam (PF05969) In PDB	Thermosynechococcus vulcanus
18	X, x	Photosystem II reaction center protein X	polymer	40	4191.0	2	UniProt (D0VWR4) Pfam (PF06596) In PDB	Thermosynechococcus vulcanus
19	Z, z	Photosystem II reaction center protein Z	polymer	62	6766.2	2	UniProt (D0VWR5) Pfam (PF01737) In PDB	Thermosynechococcus vulcanus	PSII-Z
20	R, r	Photosystem II protein Y	polymer	34	3859.7	2	UniProt (P0DM37) Pfam (PF06298) In PDB	Thermosynechococcus vulcanus
21	a, A	CA-MN4-O5 CLUSTER	non-polymer		339.8	2	Chemie (OEX)
22	a, A	FE (II) ION	non-polymer		55.8	2	Chemie (FE2)
23	a, A	CHLORIDE ION	non-polymer		35.5	4	Chemie (CL)
24	D, b, c, B, C...	CHLOROPHYLL A	non-polymer		893.5	70	Chemie (CLA)
25	D, a, A, d	PHEOPHYTIN A	non-polymer		871.2	4	Chemie (PHO)
26	T, D, c, b, C...	BETA-CAROTENE	non-polymer		536.9	20	Chemie (BCR)
27	L, f, F, a, B...	1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL	non-polymer		795.1	8	Chemie (SQD)
28	d, D, a, A	2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE	non-polymer		749.2	4	Chemie (PL9)
29	A, B, x, M, T...	UNKNOWN LIGAND	non-polymer			36	Chemie (UNL)
30	C, d, D, c, b...	1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE	non-polymer		787.2	10	Chemie (LMG)
31	h, c, H, C	DIGALACTOSYL DIACYL GLYCEROL (DGDG)	non-polymer		949.3	8	Chemie (DGD)
32	M, z, Z, j, c...	DODECYL-BETA-D-MALTOSIDE	non-polymer		510.6	8	Chemie (LMT)
33	D, d	BICARBONATE ION	non-polymer		61.0	2	Chemie (BCT)
34	d, D, e, E, l...	1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE	non-polymer		723.0	10	Chemie (LHG)
35	e, E	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	2	Chemie (HEM)
36	j, J	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
37	V, v	HEME C	non-polymer		618.5	2	Chemie (HEC)
38	X, x	(3R)-beta,beta-caroten-3-ol	non-polymer		552.9	2	Chemie (RRX)
39		water	water		18.0	2432	Chemie (HOH)

Sequence modifications

A, a: 11 - 344 (UniProt: P51765)

PDB	External Database	Details
Pro 279	Arg 279	conflict

K, k: 10 - 46 (UniProt: P19054)

PDB	External Database	Details
Leu 33	Phe 24	conflict
Trp 39	Val 30	conflict

M, m: 1 - 34 (UniProt: P12312)

PDB	External Database	Details
Leu 8	Phe 8	conflict

Contents of the asymmetric unit

Polymers	Number of chains	40
	Total formula weight	591500.7
Non-Polymers*	Number of molecules	196
	Total formula weight	117584.3
All*	Total formula weight	709085.1

*Water molecules are not included.