Research workbench
Crystal structure of photosystem I: a photosynthetic reaction center and core antenna system from cyanobacteria
Analyse Crystal structure of photosystem I: a photosynthetic reaction center and core… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.
- PDB
- 1JB0
- Type
- protein
- Length
- 2,243 residues
- Chains
- 12
- Method
- x-ray diffraction
- Collection
- MolNFT v1 / PDB
- Contract
- 0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
- Owner
- 0x3396CDB397284571d12822B4ae1189a8E22AAAAA
- Molecule
- Photosystem I P700 chlorophyll a apoprotein A1; Photosystem I P700 chlorophyll a…
- UniProt
- P25896, P25897, P18083, P20452, P25898, P25899, P25900, P25901, P20453, P25902, P25903
- Ligands
- CLA, BCR, SF4, LHG, PQN, LMG, CA
- Pockets
- 20 · best druggability 0.84
Structure
x-ray diffraction · 12 distinct chains · 56% helix, 7% strand (DSSP).
| Chain | Molecule | Type | Residues | Secondary structure | UniProt |
|---|---|---|---|---|---|
| A | Photosystem I P700 chlorophyll a apoprotein A1 | protein | 740 | 60% helix, 5% strand | P25896 |
| B | Photosystem I P700 chlorophyll a apoprotein A2 | protein | 739 | 63% helix, 3% strand | P25897 |
| C | Photosystem I iron-sulfur center | protein | 80 | 16% helix, 21% strand | P18083 |
| D | Photosystem 1 reaction centre subunit II | protein | 138 | 19% helix, 28% strand | P20452 |
| E | Photosystem 1 reaction centre subunit IV | protein | 69 | 4% helix, 33% strand | P25898 |
| F | Photosystem 1 reaction centre subunit III | protein | 141 | 60% helix, 5% strand | P25899 |
| I | Photosystem 1 reaction centre subunit VIII | protein | 38 | 68% helix, 3% strand | P25900 |
| J | Photosystem 1 reaction centre subunit IX | protein | 41 | 68% helix, 2% strand | P25901 |
| K | Photosystem 1 reaction centre subunit X | protein | 46 | 57% helix, 0% strand | P20453 |
| L | Photosystem 1 reaction centre subunit XI | protein | 151 | 68% helix, 4% strand | P25902 |
| M | Photosystem 1 reaction centre subunit XII | protein | 31 | 81% helix, 0% strand | P25903 |
| X | Photosystem I subunit psax | protein | 29 | 72% helix, 0% strand | — |
Ligands and binding sites
- CLA · Chlorophyll A · ligand · 96 copies · chains A, B, F, J, K, L, D, I, M, X
- BCR · Beta-carotene · ligand · 22 copies · chains A, K, B, F, I, L, J, M
- SF4 · Iron/sulfur cluster · ligand · 3 copies · chains A, B, C
- LHG · 1,2-dipalmitoyl-phosphatidyl-glycerole · ligand · 3 copies · chains A, E, B, X
- PQN · Phylloquinone · ligand · 2 copies · chains A, J, B
- LMG · 1,2-distearoyl-monogalactosyl-diglyceride · ligand · chains B
- CA · Calcium ion · metal · chains A, L
Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.
Pockets
20 pockets found on a 1 Å grid, 20 with a druggability of 0.5 or more.
| Volume (ų) | Druggability | Buriedness | Lining residues | Inside | |
|---|---|---|---|---|---|
| 1 | 848 | 0.84 | 0.86 | 79 | CLA |
| 2 | 1167 | 0.78 | 0.80 | 87 | CLA, LMG |
| 3 | 698 | 0.72 | 0.78 | 74 | CLA, LHG |
| 4 | 674 | 0.70 | 0.77 | 59 | CLA |
| 5 | 493 | 0.70 | 0.80 | 66 | empty |
Interfaces
26 interfaces between chains.
- A–B · 3506 Ų buried · 45 hydrogen bonds · protein-protein
- C–D · 1553 Ų buried · 24 hydrogen bonds · protein-protein
- B–F · 1142 Ų buried · 15 hydrogen bonds · protein-protein
- B–M · 1008 Ų buried · 7 hydrogen bonds · protein-protein
- B–I · 900 Ų buried · 14 hydrogen bonds · protein-protein
Compared structures
- 1JB0 · Crystal Structure of Photosystem I: a Photosynthetic Reaction Center and Core Antenna… · the same entry in another collection · chain X against X, TM-score 1.00
Analyse
- Open in the research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides and crosslinks on the 3D structure
- Every structure of UniProt P25896
- Every structure of UniProt P25897
- Every structure of UniProt P18083
- Every structure of UniProt P20452
- Every structure of UniProt P25898
- Every structure of UniProt P25899
- Every structure of UniProt P25900
- Every structure of UniProt P25901
- Every structure of UniProt P20453
- Every structure of UniProt P25902
- Every structure of UniProt P25903
- Elsewhere: RCSB PDB 1JB0 · PDBe 1JB0 · UniProt P25896 · UniProt P25897 · UniProt P18083 · UniProt P20452 · UniProt P25898 · UniProt P25899 · UniProt P25900 · UniProt P25901 · UniProt P20453 · UniProt P25902 · UniProt P25903
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