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MolNFT v1 · #126807 · protein

Cryo-EM structure of the psii supercomplex from arabidopsis thaliana

5MDX · Photosystem II protein D1: “Cryo-EM structure of the psii supercomplex from arabidopsis thaliana”. Electron microscopy, 5 ligands (CLA, CHL, PHO), 20 pockets (best druggability 0.84). MolNFT v1 #126807 on GenesisL1: 3D structure…

PDB
5MDX
Type
protein
Length
8,271 residues
Chains
50
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Photosystem II protein D1; Photosystem II CP47 reaction center protein; Photosystem II…
EC
1.10.3.9
UniProt
P83755, P56777, P56778, P56761, P56779, P62095, P56780, P62100, P56782, P60129, P62109, P23321, P61839, Q39194, Q9SKI3, P56790, Q07473, Q9XF89, P04778, Q9LMQ2
Ligands
CLA, CHL, PHO, HEM, FE2
Pockets
20 · best druggability 0.84

Structure

electron microscopy · 21 distinct chains · 53% helix, 5% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
APhotosystem II protein D1 (EC 1.10.3.9)protein30755% helix, 2% strandP83755
B, bPhotosystem II CP47 reaction center proteinprotein47847% helix, 8% strandP56777
C, cPhotosystem II CP43 reaction center proteinprotein43358% helix, 4% strandP56778
D, dPhotosystem II D2 protein (EC 1.10.3.9)protein33663% helix, 1% strandP56761
E, eCytochrome B559 subunit alphaprotein7254% helix, 0% strandP56779
F, fCytochrome B559 subunit beta (psbf)protein2979% helix, 0% strandP62095
H, hPhotosystem II reaction center protein Hprotein5263% helix, 0% strandP56780
I, iPhotosystem II reaction center protein Iprotein3563% helix, 0% strandP62100
K, kPhotosystem II reaction center protein Kprotein3658% helix, 0% strandP56782
L, lPhotosystem II reaction center protein Lprotein3664% helix, 0% strandP60129
M, mPhotosystem II reaction center protein Mprotein2990% helix, 0% strandP62109
O, oOxygen-evolving enhancer protein 1-1, chloroplasticprotein1937% helix, 44% strandP23321
T, tPhotosystem II reaction center protein Tprotein2972% helix, 0% strandP61839
W, wPhotosystem II reaction center W protein, chloroplasticprotein4652% helix, 2% strandQ39194
X, xPhotosystem II reaction center protein Xprotein3294% helix, 0% strandQ9SKI3
Z, zPhotosystem II reaction center protein Zprotein6185% helix, 0% strandP56790
aPhotosystem II protein D1 (EC 1.10.3.9)protein33056% helix, 2% strandP83755
R, rChlorophyll a-B binding protein CP29.1, chloroplasticprotein18858% helix, 4% strandQ07473
S, sChlorophyll a-B binding protein CP26, chloroplasticprotein21445% helix, 0% strandQ9XF89
G, N, Y, g, n, y, 1, 2, 3, 5, 6, 7Chlorophyll a-B binding protein 1, chloroplasticprotein21950% helix, 1% strandP04778
4, 8Chlorophyll a-B binding protein, chloroplasticprotein20448% helix, 0% strandQ9LMQ2

Ligands and binding sites

  • CLA · Chlorophyll A · ligand · 212 copies · chains A, D, C, I, W, B, H, L, M, K, X, a, d, i, w, c, b, h, l, m, x, k, R, 8, S, G, N, 5, Y, r, 4, s, g, n, 1, y, 2, 3, 6, 7
  • CHL · Chlorophyll B · ligand · 96 copies · chains R, b, S, G, N, Y, r, s, g, n, y, 1, 2, 3, 4, 5, 6, 7, 8
  • PHO · Pheophytin A · ligand · 4 copies · chains A, D, a, d
  • HEM · Protoporphyrin IX containing Fe · ligand · 2 copies · chains E, F, e, f
  • FE2 · Fe (II) ion · metal · 2 copies · chains A, D, a, d

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.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
18270.840.86103empty
210390.830.84113empty
36430.820.8788empty
49670.810.8288CLA
53220.810.9158empty

Interfaces

122 interfaces between chains.

  • a–d · 5161 Ų buried · 38 hydrogen bonds · protein-protein
  • A–D · 5120 Ų buried · 35 hydrogen bonds · protein-protein
  • B–D · 2465 Ų buried · 23 hydrogen bonds · protein-protein
  • a–c · 2145 Ų buried · 11 hydrogen bonds · protein-protein
  • b–d · 2009 Ų buried · 11 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 10 covalent, 2 disulfide (covalent ligand, disulfide).

Compared structures

  • 5MDX · Cryo-EM structure of the PSII supercomplex from Arabidopsis thaliana · the same entry in another collection · chain E against E, TM-score 1.00

Analyse

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