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8iwx

Cryo-EM structure of unprotonated LHCII in detergent solution at high pH value

Method: ELECTRON MICROSCOPY
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Chlorophyll a-b binding protein, chloroplastic

Spinacia oleracea

UniProt P12333

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 3 CHLOROPHYLL B × 18 CHLOROPHYLL A × 24 (3R,3'R,6S)-4,5-DIDEHYDRO-5,6-DIHYDRO-BETA,BETA-CAROTENE-3,3'-DIOL × 6 ;(3S,5R,6S,3'S,5'R,6'S)-5,6,5',6'-DIEPOXY-5,6,5',6'- TETRAHYDRO-BETA,BETA-CAROTENE-3,3'-DIOL ; × 3 ;(1R,3R)-6-{(3E,5E,7E,9E,11E,13E,15E,17E)-18-[(1S,4R,6R)-4-HYDROXY-2,2,6-TRIMETHYL-7-OXABICYCLO[4.1.0]HEPT-1-YL]-3,7,12,16-TETRAMETHYLOCTADECA-1,3,5,7,9,11,13,15,17-NONAENYLIDENE}-1,5,5-TRIMETHYLCYCLOHEXANE-1,3-DIOL ; × 3 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 3 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers
1rwt 8iwx 8iwy 8iwz 8ix0 8ix1 8ix2 8y15 8yee

9 assemblies

Heteromeric or nucleic-acid complex
3jcu

1 assemblies

View Construct and Data Evidence
UniProt name CB2A_SPIOL
Isoform —
PDB entities 1
Chains and sequence ranges Author chain G； PDBConstruct 1–218； UniProt 49–266 Author chain N； PDBConstruct 1–218； UniProt 49–266 Author chain Y； PDBConstruct 1–218； UniProt 49–266

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id8iwx
Deposition date deposition_date2023-03-31
Structure title titleCryo-EM structure of unprotonated LHCII in detergent solution at high pH value
Keywords keywordsLHCII, Light-harvesting complex, Photosystem II, PLANT PROTEIN; PLANT PROTEIN
Experimental Method methodELECTRON MICROSCOPY
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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

8iwx__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

8iwx__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

8iwx__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg（Guinier）30.77 Å
Rg (electron density)28.64 Å
Total Rg29.91 Å
Atom count8238
Residues654
Excluded volume156360 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 8iwx__assembly_1__model_1 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (7)

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6. Fold Classification (SCOP + CATH) 3 domains

CATH v4.4 (3 domains)

Domain ID domain_id8iwxG01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology3460 — Chlorophyll a-b binding protein
Homologous superfamily homologous superfamily10 — Chlorophyll a/b binding protein domain
Domain ID domain_id8iwxN01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology3460 — Chlorophyll a-b binding protein
Homologous superfamily homologous superfamily10 — Chlorophyll a/b binding protein domain
Domain ID domain_id8iwxY01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology3460 — Chlorophyll a-b binding protein
Homologous superfamily homologous superfamily10 — Chlorophyll a/b binding protein domain
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7. Citations (1)