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4TNK

RT XFEL structure of Photosystem II 250 microsec after the third illumination at 5.2 A resolution

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, U
(A, a)
Photosystem Q(B) protein 1polymer34438265.62UniProt (P0A444)
Pfam (PF00124)
Thermosynechococcus elongatus32 kDa thylakoid membrane protein 1,Photosystem II protein D1 1
2B, V
(B, b)
Photosystem II core light harvesting proteinpolymer51056656.52UniProt (Q8DIQ1)
Pfam (PF00421)
Thermosynechococcus elongatus
3C, W
(C, c)
Photosystem II CP43 proteinpolymer46150287.52UniProt (Q8DIF8)
Pfam (PF00421)
Thermosynechococcus elongatus
4D, X
(D, d)
Photosystem II D2 proteinpolymer35239388.22UniProt (Q8CM25)
Pfam (PF00124)
Thermosynechococcus elongatusPSII D2 protein,Photosystem Q(A) protein
5E, Y
(E, e)
Cytochrome b559 subunit alphapolymer849580.82UniProt (Q8DIP0)
Pfam (PF00283)
Pfam (PF00284)
Thermosynechococcus elongatusPSII reaction center subunit V
6F, Z
(F, f)
Cytochrome b559 subunit betapolymer455067.92UniProt (Q8DIN9)
Pfam (PF00283)
Thermosynechococcus elongatusPSII reaction center subunit VI
7AA, G
(H, h)
Photosystem II reaction center protein Hpolymer667358.82UniProt (Q8DJ43)
Pfam (PF00737)
Thermosynechococcus elongatusPSII-H
8BA, H
(I, i)
Photosystem II reaction center protein Ipolymer384410.22UniProt (Q8DJZ6)
Pfam (PF02532)
Thermosynechococcus elongatusPSII-I,PSII 4.4 kDa protein
9CA, I
(J, j)
Photosystem II reaction center protein Jpolymer404105.92UniProt (P59087)
Pfam (PF01788)
Thermosynechococcus elongatusPSII-J
10DA, J
(K, k)
Photosystem II reaction center protein Kpolymer465028.12UniProt (Q9F1K9)
Pfam (PF02533)
Thermosynechococcus elongatusPSII-K
11EA, K
(L, l)
Photosystem II reaction center protein Lpolymer374299.02UniProt (Q8DIN8)
Pfam (PF02419)
Thermosynechococcus elongatusPSII-L,PSII 5 kDa protein
12FA, L
(M, m)
Photosystem II reaction center protein Mpolymer363981.72UniProt (Q8DHA7)
Pfam (PF05151)
Thermosynechococcus elongatusPSII-M
13GA, M
(O, o)
Photosystem II manganese-stabilizing polypeptidepolymer27229637.42UniProt (P0A431)
Pfam (PF01716)
Thermosynechococcus elongatusMSP
14HA, N
(T, t)
Photosystem II reaction center protein Tpolymer323878.72UniProt (Q8DIQ0)
Pfam (PF01405)
Thermosynechococcus elongatusPSII-Tc
15IA, O
(U, u)
Photosystem II 12 kDa extrinsic proteinpolymer13415031.02UniProt (Q9F1L5)
Pfam (PF06514)
Thermosynechococcus elongatusPS II complex 12 kDa extrinsic protein,PSII-U
16JA, P
(V, v)
Cytochrome c-550polymer16318046.92UniProt (P0A386)
Pfam (PF14495)
Thermosynechococcus elongatusCytochrome c-549,Cytochrome c550,Low-potential cytochrome c
17KA, Q
(y, g)
Photosystem II reaction center protein Ycf12polymer465039.12UniProt (Q8DJI1)
Pfam (PF05969)
Thermosynechococcus elongatus
18LA, R
(X, x)
Photosystem II reaction center X proteinpolymer414322.22UniProt (Q9F1R6)
Pfam (PF06596)
Thermosynechococcus elongatus
19MA, S
(Y, G)
Photosystem II reaction center protein Ypolymer282401.02Thermosynechococcus elongatus
20NA, T
(Z, z)
Photosystem II reaction center protein Zpolymer626766.22UniProt (Q8DHJ2)
Pfam (PF01737)
Thermosynechococcus elongatusPSII-Z
21OA, OE
(A, a)
FE (II) IONnon-polymer55.82Chemie (FE2)
22AF, AG, BF, BG, CB...
(b, c, B, D, a...)
CHLOROPHYLL Anon-polymer893.570Chemie (CLA)
23AD, OG, PG, SA
(D, d, A)
PHEOPHYTIN Anon-polymer871.24Chemie (PHO)
24ED, HH, IE, RD, UA...
(D, j, a, J, 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-BENZOQUINONEnon-polymer749.26Chemie (PL9)
25BE, CH, EG, EH, FG...
(y, f, c, i, j...)
BETA-CAROTENEnon-polymer536.924Chemie (BCR)
26BC, GD, GG, HG, IG...
(B, D, c, a, b...)
DIGALACTOSYL DIACYL GLYCEROL (DGDG)non-polymer949.314Chemie (DGD)
27KE, KG, WC, XA
(a, c, C, A)
1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLEnon-polymer723.04Chemie (LHG)
28LE, YA
(a, A)
CHLORIDE IONnon-polymer35.52Chemie (CL)
29ME, ZA
(a, A)
CA-MN4-O5 CLUSTERnon-polymer339.82Chemie (OEX)
30AB, BB, CC, CE, DH...
(A, B, a, f, F...)
1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROLnon-polymer795.110Chemie (SQD)
31AC, AH, DE, FD, FH...
(B, e, a, D, i...)
1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDEnon-polymer787.222Chemie (LMG)
32DC, EC, GH, HD, QD...
(B, i, D, I, b...)
DODECYL-BETA-D-MALTOSIDEnon-polymer510.614Chemie (LMT)
33BD, RG
(D, d)
BICARBONATE IONnon-polymer61.02Chemie (BCT)
34AE, BH, KD, NH
(V, f, F, v)
PROTOPORPHYRIN IX CONTAINING FEnon-polymer616.54Chemie (HEM)
35JH, MH, UD, ZD
(k, o, K, O)
CALCIUM IONnon-polymer40.14Chemie (CA)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains40
Total formula weight627105.6
Non-Polymers*Number of molecules184
Total formula weight135619.0
All*Total formula weight762724.6
*Water molecules are not included.

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PDB entries from 2025-06-11

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