6K61
Cryo-EM structure of the tetrameric photosystem I from a heterocyst-forming cyanobacterium Anabaena sp. PCC7120
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, M (A, a) | Photosystem I P700 chlorophyll a apoprotein A1 | polymer | 752 | 83289.7 | 2 | UniProt (P58576) Pfam (PF00223) | Nostoc sp. PCC 7120 | PsaA |
| 2 | B, N (X, x) | Photosystem I 4.8 kDa protein | polymer | 44 | 4872.8 | 2 | UniProt (P58566) Pfam (PF08078) | Nostoc sp. PCC 7120 | |
| 3 | C, O (B, b) | Photosystem I P700 chlorophyll a apoprotein A2 1 | polymer | 741 | 83457.0 | 2 | UniProt (P58565) Pfam (PF00223) | Nostoc sp. PCC 7120 | PsaB 1 |
| 4 | D, P (C, c) | Photosystem I iron-sulfur center | polymer | 81 | 8825.2 | 2 | UniProt (P0A410) Pfam (PF12838) | Nostoc sp. PCC 7120 | 9 kDa polypeptide,PSI-C,Photosystem I subunit VII,PsaC |
| 5 | E, Q (D, d) | Photosystem I reaction center subunit II | polymer | 139 | 15176.2 | 2 | UniProt (P58573) Pfam (PF02531) | Nostoc sp. PCC 7120 | |
| 6 | F, R (E, e) | Photosystem I reaction center subunit IV | polymer | 70 | 7897.1 | 2 | UniProt (P58575) Pfam (PF02427) | Nostoc sp. PCC 7120 | |
| 7 | G, S (F, f) | Photosystem I reaction center subunit III | polymer | 164 | 17850.6 | 2 | UniProt (P58564) Pfam (PF02507) | Nostoc sp. PCC 7120 | PSI-F |
| 8 | H, T (J, j) | Photosystem I reaction center subunit IX | polymer | 49 | 5499.4 | 2 | UniProt (P58568) Pfam (PF01701) | Nostoc sp. PCC 7120 | |
| 9 | I, U (K, k) | Photosystem I reaction center subunit PsaK 1 | polymer | 86 | 8852.5 | 2 | UniProt (P58583) Pfam (PF01241) | Nostoc sp. PCC 7120 | Photosystem I subunit X 1 |
| 10 | J, V (I, i) | Photosystem I reaction center subunit VIII | polymer | 46 | 5066.9 | 2 | UniProt (P58560) Pfam (PF00796) | Nostoc sp. PCC 7120 | |
| 11 | K, W (L, l) | Photosystem I reaction center subunit XI | polymer | 172 | 18130.7 | 2 | UniProt (P58577) Pfam (PF02605) | Nostoc sp. PCC 7120 | PSI subunit V,PSI-L |
| 12 | L, X (M, m) | Photosystem I reaction center subunit XII | polymer | 32 | 3538.2 | 2 | UniProt (Q8YNB0) Pfam (PF07465) | Nostoc sp. PCC 7120 | PSI-M |
| 13 | WE, Y (a, A) | CHLOROPHYLL A ISOMER | non-polymer | 893.5 | 2 | Chemie (CL0) | |||
| 14 | AA, AB, AD, AF, AG... (A, B, a, b, f...) | CHLOROPHYLL A | non-polymer | 893.5 | 188 | Chemie (CLA) | |||
| 15 | LG, OI, PB, SD (a, b, A, B) | PHYLLOQUINONE | non-polymer | 450.7 | 4 | Chemie (PQN) | |||
| 16 | AE, BE, MG, QB, WI... (C, a, A, c) | IRON/SULFUR CLUSTER | non-polymer | 351.6 | 6 | Chemie (SF4) | |||
| 17 | BJ, EE, FJ, GE, GJ... (f, F, j, J, k...) | BETA-CAROTENE | non-polymer | 536.9 | 46 | Chemie (BCR) | |||
| 18 | CE, NJ, TG, UG, XB... (F, i, a, A) | 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE | non-polymer | 723.0 | 6 | Chemie (LHG) | |||
| 19 | AC, PJ, WG, XG (X, l, x, b) | 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL | non-polymer | 795.1 | 4 | Chemie (SQD) | |||
| 20 | DC, VI, ZD (B, b) | 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE | non-polymer | 787.2 | 3 | Chemie (LMG) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 24 |
| Total formula weight | 524912.6 | |
| Non-Polymers* | Number of molecules | 259 |
| Total formula weight | 208251.5 | |
| All* | Total formula weight | 733164.0 |
