7oy8

Cryo-EM structure of the Rhodospirillum rubrum RC-LH1 complex

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

Light-harvesting protein B-870 beta chain

OrganismNot specified

UniProt Q2RQ23

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 35 Antenna complex, alpha/beta subunit × 15 (Q2RQ24) Photosynthetic reaction center, H-chain × 1 (Q2RWS4) Photosynthetic reaction center L subunit × 1 (Q2RQ25) Reaction center protein M chain × 1 (Q2RQ26) Antenna complex, alpha/beta subunit × 1 (Q2RQ24) Trans-Geranyl BACTERIOCHLOROPHYLL A × 37 SPIRILLOXANTHIN × 17 (1R)-2-{[(S)-{[(2S)-2,3-dihydroxypropyl]oxy}(hydroxy)phosphoryl]oxy}-1-[(hexadecanoyloxy)methyl]ethyl (9Z)-octadec-9-enoate × 2 ;(2R,5R,11R,14R)-5,8,11-trihydroxy-5,11-dioxido-17-oxo-2,14-bis(tetradecanoyloxy)-4,6,10,12,16-pentaoxa-5,11-diphosphatriacont-1-yl tetradecanoate ; × 2 BACTERIOPHEOPHYTIN A × 2 ;2-azanyl-5-[(2~{E},6~{E},8~{E},10~{E},12~{E},14~{E},18~{E},22~{E},26~{E},30~{E},34~{E})-3,7,11,15,19,23,27,31,35,39-decamethyltetraconta-2,6,8,10,12,14,18,22,26,30,34,38-dodecaenyl]-3-methoxy-6-methyl-cyclohexa-2,5-diene-1,4-dione ; × 1 UBIQUINONE-10 × 3 FE (III) ION × 1 CHLORIDE ION × 1 PHOSPHATE ION × 1 DODECYL-BETA-D-MALTOSIDE × 1 water × 33 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name LHB_RHORT
Isoform —
PDB entities 1
Chains and sequence ranges Author chain 1; PDBConstruct 1–54; UniProt 3–56 Author chain 3; PDBConstruct 1–54; UniProt 3–56 Author chain 5; PDBConstruct 1–54; UniProt 3–56 Author chain 7; PDBConstruct 1–54; UniProt 3–56 Author chain 9; PDBConstruct 1–54; UniProt 3–56 Author chain I; PDBConstruct 1–54; UniProt 3–56 Author chain K; PDBConstruct 1–54; UniProt 3–56 Author chain O; PDBConstruct 1–54; UniProt 3–56 Author chain Q; PDBConstruct 1–54; UniProt 3–56 Author chain S; PDBConstruct 1–54; UniProt 3–56 Author chain U; PDBConstruct 1–54; UniProt 3–56 Author chain W; PDBConstruct 1–54; UniProt 3–56 Author chain Y; PDBConstruct 1–54; UniProt 3–56 Author chain d; PDBConstruct 1–54; UniProt 3–56 Author chain m; PDBConstruct 1–54; UniProt 3–56 Author chain n; PDBConstruct 1–54; UniProt 3–56

Antenna complex, alpha/beta subunit

OrganismNot specified

UniProt Q2RQ24

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 35 Light-harvesting protein B-870 beta chain × 16 (Q2RQ23) Photosynthetic reaction center, H-chain × 1 (Q2RWS4) Photosynthetic reaction center L subunit × 1 (Q2RQ25) Reaction center protein M chain × 1 (Q2RQ26) Trans-Geranyl BACTERIOCHLOROPHYLL A × 37 SPIRILLOXANTHIN × 17 (1R)-2-{[(S)-{[(2S)-2,3-dihydroxypropyl]oxy}(hydroxy)phosphoryl]oxy}-1-[(hexadecanoyloxy)methyl]ethyl (9Z)-octadec-9-enoate × 2 ;(2R,5R,11R,14R)-5,8,11-trihydroxy-5,11-dioxido-17-oxo-2,14-bis(tetradecanoyloxy)-4,6,10,12,16-pentaoxa-5,11-diphosphatriacont-1-yl tetradecanoate ; × 2 BACTERIOPHEOPHYTIN A × 2 ;2-azanyl-5-[(2~{E},6~{E},8~{E},10~{E},12~{E},14~{E},18~{E},22~{E},26~{E},30~{E},34~{E})-3,7,11,15,19,23,27,31,35,39-decamethyltetraconta-2,6,8,10,12,14,18,22,26,30,34,38-dodecaenyl]-3-methoxy-6-methyl-cyclohexa-2,5-diene-1,4-dione ; × 1 UBIQUINONE-10 × 3 FE (III) ION × 1 CHLORIDE ION × 1 PHOSPHATE ION × 1 DODECYL-BETA-D-MALTOSIDE × 1 water × 33 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name Q2RQ24_RHORT
Isoform —
PDB entities 2, 6
Chains and sequence ranges Author chain 2; PDBConstruct 1–50; UniProt 1–50 Author chain 4; PDBConstruct 1–50; UniProt 1–50 Author chain 6; PDBConstruct 1–50; UniProt 1–50 Author chain 8; PDBConstruct 1–50; UniProt 1–50 Author chain A; PDBConstruct 1–50; UniProt 1–50 Author chain D; PDBConstruct 1–50; UniProt 1–50 Author chain E; PDBConstruct 1–50; UniProt 1–50 Author chain F; PDBConstruct 1–50; UniProt 1–50 Author chain G; PDBConstruct 1–50; UniProt 1–50 Author chain J; PDBConstruct 1–50; UniProt 1–50 Author chain N; PDBConstruct 1–50; UniProt 1–50 Author chain T; PDBConstruct 1–50; UniProt 1–50 Author chain V; PDBConstruct 1–50; UniProt 1–50 Author chain X; PDBConstruct 1–50; UniProt 1–50 Author chain Z; PDBConstruct 1–50; UniProt 1–50 Author chain R; PDBConstruct 1–62; UniProt 1–62

Photosynthetic reaction center, H-chain

OrganismNot specified

UniProt Q2RWS4

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 35 Light-harvesting protein B-870 beta chain × 16 (Q2RQ23) Antenna complex, alpha/beta subunit × 15 (Q2RQ24) Photosynthetic reaction center L subunit × 1 (Q2RQ25) Reaction center protein M chain × 1 (Q2RQ26) Antenna complex, alpha/beta subunit × 1 (Q2RQ24) Trans-Geranyl BACTERIOCHLOROPHYLL A × 37 SPIRILLOXANTHIN × 17 (1R)-2-{[(S)-{[(2S)-2,3-dihydroxypropyl]oxy}(hydroxy)phosphoryl]oxy}-1-[(hexadecanoyloxy)methyl]ethyl (9Z)-octadec-9-enoate × 2 ;(2R,5R,11R,14R)-5,8,11-trihydroxy-5,11-dioxido-17-oxo-2,14-bis(tetradecanoyloxy)-4,6,10,12,16-pentaoxa-5,11-diphosphatriacont-1-yl tetradecanoate ; × 2 BACTERIOPHEOPHYTIN A × 2 ;2-azanyl-5-[(2~{E},6~{E},8~{E},10~{E},12~{E},14~{E},18~{E},22~{E},26~{E},30~{E},34~{E})-3,7,11,15,19,23,27,31,35,39-decamethyltetraconta-2,6,8,10,12,14,18,22,26,30,34,38-dodecaenyl]-3-methoxy-6-methyl-cyclohexa-2,5-diene-1,4-dione ; × 1 UBIQUINONE-10 × 3 FE (III) ION × 1 CHLORIDE ION × 1 PHOSPHATE ION × 1 DODECYL-BETA-D-MALTOSIDE × 1 water × 33 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name Q2RWS4_RHORT
Isoform —
PDB entities 3
Chains and sequence ranges Author chain H; PDBConstruct 1–257; UniProt 1–257

Photosynthetic reaction center L subunit

OrganismNot specified

UniProt Q2RQ25

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 35 Light-harvesting protein B-870 beta chain × 16 (Q2RQ23) Antenna complex, alpha/beta subunit × 15 (Q2RQ24) Photosynthetic reaction center, H-chain × 1 (Q2RWS4) Reaction center protein M chain × 1 (Q2RQ26) Antenna complex, alpha/beta subunit × 1 (Q2RQ24) Trans-Geranyl BACTERIOCHLOROPHYLL A × 37 SPIRILLOXANTHIN × 17 (1R)-2-{[(S)-{[(2S)-2,3-dihydroxypropyl]oxy}(hydroxy)phosphoryl]oxy}-1-[(hexadecanoyloxy)methyl]ethyl (9Z)-octadec-9-enoate × 2 ;(2R,5R,11R,14R)-5,8,11-trihydroxy-5,11-dioxido-17-oxo-2,14-bis(tetradecanoyloxy)-4,6,10,12,16-pentaoxa-5,11-diphosphatriacont-1-yl tetradecanoate ; × 2 BACTERIOPHEOPHYTIN A × 2 ;2-azanyl-5-[(2~{E},6~{E},8~{E},10~{E},12~{E},14~{E},18~{E},22~{E},26~{E},30~{E},34~{E})-3,7,11,15,19,23,27,31,35,39-decamethyltetraconta-2,6,8,10,12,14,18,22,26,30,34,38-dodecaenyl]-3-methoxy-6-methyl-cyclohexa-2,5-diene-1,4-dione ; × 1 UBIQUINONE-10 × 3 FE (III) ION × 1 CHLORIDE ION × 1 PHOSPHATE ION × 1 DODECYL-BETA-D-MALTOSIDE × 1 water × 33 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name Q2RQ25_RHORT
Isoform —
PDB entities 4
Chains and sequence ranges Author chain L; PDBConstruct 1–276; UniProt 1–276

Reaction center protein M chain

OrganismNot specified

UniProt Q2RQ26

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 35 Light-harvesting protein B-870 beta chain × 16 (Q2RQ23) Antenna complex, alpha/beta subunit × 15 (Q2RQ24) Photosynthetic reaction center, H-chain × 1 (Q2RWS4) Photosynthetic reaction center L subunit × 1 (Q2RQ25) Antenna complex, alpha/beta subunit × 1 (Q2RQ24) Trans-Geranyl BACTERIOCHLOROPHYLL A × 37 SPIRILLOXANTHIN × 17 (1R)-2-{[(S)-{[(2S)-2,3-dihydroxypropyl]oxy}(hydroxy)phosphoryl]oxy}-1-[(hexadecanoyloxy)methyl]ethyl (9Z)-octadec-9-enoate × 2 ;(2R,5R,11R,14R)-5,8,11-trihydroxy-5,11-dioxido-17-oxo-2,14-bis(tetradecanoyloxy)-4,6,10,12,16-pentaoxa-5,11-diphosphatriacont-1-yl tetradecanoate ; × 2 BACTERIOPHEOPHYTIN A × 2 ;2-azanyl-5-[(2~{E},6~{E},8~{E},10~{E},12~{E},14~{E},18~{E},22~{E},26~{E},30~{E},34~{E})-3,7,11,15,19,23,27,31,35,39-decamethyltetraconta-2,6,8,10,12,14,18,22,26,30,34,38-dodecaenyl]-3-methoxy-6-methyl-cyclohexa-2,5-diene-1,4-dione ; × 1 UBIQUINONE-10 × 3 FE (III) ION × 1 CHLORIDE ION × 1 PHOSPHATE ION × 1 DODECYL-BETA-D-MALTOSIDE × 1 water × 33 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name Q2RQ26_RHORT
Isoform —
PDB entities 5
Chains and sequence ranges Author chain M; PDBConstruct 1–306; UniProt 1–306

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_id7oy8
Deposition date deposition_date2021-06-23
Structure title titleCryo-EM structure of the Rhodospirillum rubrum RC-LH1 complex
Keywords keywordsphotosynthesis, light-harvesting complex, reaction centre, purple bacteria, membrane protein, STRUCTURAL PROTEIN; STRUCTURAL 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.

7oy8__assembly_1__model_1

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

Download this curve (.dat)

7oy8__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.

7oy8__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)44.59 Å
Rg (electron density)43.54 Å
Total Rg43.87 Å
Atom count22530
Residues2278
Excluded volume408350 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 7oy8__assembly_1__model_1 35-meric (35) 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 (18)

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6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id7oy8H01
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology50 — Photosynthetic Reaction Center; Chain H, domain 2
Homologous superfamily homologous superfamily10 — Photosynthetic Reaction Center, subunit H, domain 2
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7. Citations (1)