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6TRA

Cryo- EM structure of the Thermosynechococcus elongatus photosystem I in the presence of cytochrome c6

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Photosystem I P700 chlorophyll a apoprotein A1polymer75583267.81UniProt (P0A405)
Pfam (PF00223)
Thermosynechococcus elongatus (strain BP-1)PsaA
2B
(B)
Photosystem I P700 chlorophyll a apoprotein A2polymer74183123.61UniProt (P0A407)
Pfam (PF00223)
Thermosynechococcus elongatus (strain BP-1)PsaB
3C
(C)
Photosystem I iron-sulfur centerpolymer818809.21UniProt (P0A415)
Pfam (PF12838)
Thermosynechococcus elongatus (strain BP-1)9 kDa polypeptide,PSI-C,Photosystem I subunit VII,PsaC
4D
(D)
Photosystem I reaction center subunit IIpolymer13915389.51UniProt (P0A420)
Pfam (PF02531)
Thermosynechococcus elongatus (strain BP-1)Photosystem I 16 kDa polypeptide,PSI-D
5E
(E)
Photosystem I reaction center subunit IVpolymer768399.51UniProt (P0A423)
Pfam (PF02427)
Thermosynechococcus elongatus (strain BP-1)Photosystem I 8.1 kDa protein,p30 protein
6F
(F)
Photosystem I reaction center subunit IIIpolymer14115129.41UniProt (P0A401)
Pfam (PF02507)
Thermosynechococcus elongatus (strain BP-1)PSI-F
7G
(I)
Photosystem I reaction center subunit VIIIpolymer384325.21UniProt (P0A427)
Pfam (PF00796)
Thermosynechococcus elongatus (strain BP-1)
8H
(J)
Photosystem I reaction center subunit IXpolymer414798.71UniProt (P0A429)
Pfam (PF01701)
Thermosynechococcus elongatus (strain BP-1)
9I
(K)
Photosystem I reaction center subunit PsaKpolymer838484.01UniProt (P0A425)
Pfam (PF01241)
Thermosynechococcus elongatus (strain BP-1)Light-harvesting 8.0 kDa polypeptide,Photosystem I subunit X
10J
(L)
Photosystem I reaction center subunit XIpolymer15516287.81UniProt (Q8DGB4)
Pfam (PF02605)
Thermosynechococcus elongatus (strain BP-1)PSI subunit V,PSI-L
11K
(M)
Photosystem I reaction center subunit XIIpolymer313426.11UniProt (P0A403)
Pfam (PF07465)
Thermosynechococcus elongatus (strain BP-1)PSI-M
12L
(X)
Photosystem I 4.8K proteinpolymer364104.91UniProt (Q8DKP6)
Pfam (PF08078)
Thermosynechococcus elongatus (strain BP-1)
13M
(A)
CHLOROPHYLL A ISOMERnon-polymer893.51Chemie (CL0)
14AA, AB, AC, AD, AE...
(A, B, J, K, L...)
CHLOROPHYLL Anon-polymer893.596Chemie (CLA)
15DB, ED
(A, B)
PHYLLOQUINONEnon-polymer450.72Chemie (PQN)
16BE, CE, EB, FB, FD...
(J, A, B, K, L...)
BETA-CAROTENEnon-polymer536.924Chemie (BCR)
17LB, MB, MD, NE, XD
(A, B, M, I)
1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLEnon-polymer723.05Chemie (LHG)
18PB, PD, QD
(B, C)
IRON/SULFUR CLUSTERnon-polymer351.63Chemie (SF4)
19IE, QB
(L, B)
CALCIUM IONnon-polymer40.12Chemie (CA)
20LD
(B)
1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDEnon-polymer787.21Chemie (LMG)
21AF, QE, RE, SE, TE...
(M, A, B, C, D...)
waterwater18.0217Chemie (HOH)
Sequence modifications
L: 0 - 154 (UniProt: Q8DGB4)
PDBExternal DatabaseDetails
Leu 143Ser 144conflict
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains12
Total formula weight255545.7
Non-Polymers*Number of molecules134
Total formula weight105991.9
All*Total formula weight361537.6
*Water molecules are not included.

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PDB entries from 2026-01-14

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