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 6Z5R | pdb_00006z5r

RC-LH1(16) complex from Rhodopseudomonas palustris


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report

Validation slider image for 6Z5R

This is version 1.3 of the entry. See complete history. 

Literature

Structures of Rhodopseudomonas palustris RC-LH1 complexes with open or closed quinone channels.

Swainsbury, D.J.K., Qian, P., Jackson, P.J., Faries, K.M., Niedzwiedzki, D.M., Martin, E.C., Farmer, D.A., Malone, L.A., Thompson, R.F., Ranson, N.A., Canniffe, D.P., Dickman, M.J., Holten, D., Kirmaier, C., Hitchcock, A., Hunter, C.N.

(2021) Sci Adv 7

  • DOI: https://doi.org/10.1126/sciadv.abe2631
  • Primary Citation Related Structures: 
    6Z5R, 6Z5S

  • PubMed Abstract: 

    The reaction-center light-harvesting complex 1 (RC-LH1) is the core photosynthetic component in purple phototrophic bacteria. We present two cryo-electron microscopy structures of RC-LH1 complexes from Rhodopseudomonas palustris A 2.65-Å resolution structure of the RC-LH1 14 -W complex consists of an open 14-subunit LH1 ring surrounding the RC interrupted by protein-W, whereas the complex without protein-W at 2.80-Å resolution comprises an RC completely encircled by a closed, 16-subunit LH1 ring. Comparison of these structures provides insights into quinone dynamics within RC-LH1 complexes, including a previously unidentified conformational change upon quinone binding at the RC Q B site, and the locations of accessory quinone binding sites that aid their delivery to the RC. The structurally unique protein-W prevents LH1 ring closure, creating a channel for accelerated quinone/quinol exchange.


  • Organizational Affiliation: 
    • Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield, S10 2TN, UK. d.swainsbury@sheffield.ac.uk c.n.hunter@sheffield.ac.uk.

Macromolecule Content 

  • Total Structure Weight: 362.48 kDa 
  • Atom Count: 25,048 
  • Modeled Residue Count: 2,336 
  • Deposited Residue Count: 2,439 
  • Unique protein chains: 5

Macromolecules

Find similar proteins by:|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Light-harvesting complex 1 alpha chain48Rhodopseudomonas palustris CGA009Mutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for Q6N9L4 (Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009))
Explore Q6N9L4 
Go to UniProtKB:  Q6N9L4
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6N9L4
Sequence Annotations
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Reference Sequence
Find similar proteins by:|  3D Structure
Entity ID: 2
MoleculeChains  Sequence LengthOrganismDetailsImage
Light-harvesting complex 1 beta chain52Rhodopseudomonas palustris CGA009Mutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for Q6N9L5 (Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009))
Explore Q6N9L5 
Go to UniProtKB:  Q6N9L5
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6N9L5
Sequence Annotations
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Reference Sequence
Find similar proteins by:|  3D Structure
Entity ID: 3
MoleculeChains  Sequence LengthOrganismDetailsImage
H subunit of photosynthetic reaction center complexK [auth H]255Rhodopseudomonas palustris CGA009Mutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for A0A4Z9 (Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009))
Explore A0A4Z9 
Go to UniProtKB:  A0A4Z9
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A4Z9
Sequence Annotations
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Reference Sequence
Find similar proteins by:|  3D Structure
Entity ID: 4
MoleculeChains  Sequence LengthOrganismDetailsImage
Reaction center protein L chain277Rhodopseudomonas palustris CGA009Mutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for O83005 (Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009))
Explore O83005 
Go to UniProtKB:  O83005
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO83005
Sequence Annotations
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Reference Sequence
Find similar proteins by:|  3D Structure
Entity ID: 5
MoleculeChains  Sequence LengthOrganismDetailsImage
Reaction center protein M chain307Rhodopseudomonas palustris CGA009Mutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for A0A4Z7 (Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009))
Explore A0A4Z7 
Go to UniProtKB:  A0A4Z7
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A4Z7
Sequence Annotations
Expand
Reference Sequence

Small Molecules

Ligands 10 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CDL
(Subject of Investigation/LOI)

Query on CDL



Download:Ideal Coordinates CCD File
EC [auth M]
FC [auth M]
PA [auth E]
TA [auth G]
WB [auth L]
EC [auth M],
FC [auth M],
PA [auth E],
TA [auth G],
WB [auth L],
XA [auth G]
CARDIOLIPIN
C81 H156 O17 P2
XVTUQDWPJJBEHJ-KZCWQMDCSA-L
BCL
(Subject of Investigation/LOI)

Query on BCL



Download:Ideal Coordinates CCD File
AC [auth M]
AD [auth Y]
AE [auth 7]
BB [auth J]
BD [auth Y]
AC [auth M],
AD [auth Y],
AE [auth 7],
BB [auth J],
BD [auth Y],
CE [auth 7],
DB [auth J],
FD [auth A],
GB [auth N],
GE [auth 9],
HB [auth N],
HC [auth R],
HD [auth B],
HE [auth 0],
JA [auth C],
JC [auth R],
KA [auth C],
KD [auth 1],
LD [auth 1],
MC [auth T],
NA [auth E],
NB [auth L],
NC [auth U],
PD [auth 3],
QC [auth V],
RA [auth F],
RC [auth V],
RD [auth 4],
UB [auth L],
UD [auth 5],
VA [auth G],
VC [auth P],
WA [auth G],
WD [auth 5],
XC [auth Q],
YB [auth M]
BACTERIOCHLOROPHYLL A
C55 H74 Mg N4 O6
DSJXIQQMORJERS-AGGZHOMASA-M
BPH
(Subject of Investigation/LOI)

Query on BPH



Download:Ideal Coordinates CCD File
BC [auth M],
OB [auth L]
BACTERIOPHEOPHYTIN A
C55 H76 N4 O6
KWOZSBGNAHVCKG-SZQBJALDSA-N
U10
(Subject of Investigation/LOI)

Query on U10



Download:Ideal Coordinates CCD File
CC [auth M],
GC [auth M],
PB [auth L],
TB [auth L],
VB [auth L]
UBIQUINONE-10
C59 H90 O4
ACTIUHUUMQJHFO-UPTCCGCDSA-N
6PL
(Subject of Investigation/LOI)

Query on 6PL



Download:Ideal Coordinates CCD File
AB [auth I]
ED [auth Z]
EE [auth 8]
FB [auth K]
JD [auth B]
AB [auth I],
ED [auth Z],
EE [auth 8],
FB [auth K],
JD [auth B],
JE [auth 0],
KB [auth O],
LB [auth H],
LC [auth S],
MA [auth D],
OA [auth E],
OD [auth 2],
PC [auth U],
QB [auth L],
RB [auth L],
SA [auth F],
TC [auth X],
TD [auth 4],
VD [auth 5],
WC [auth P],
XB [auth M],
YA [auth I],
YD [auth 6],
ZC [auth Q]
(4S,7R)-4-HYDROXY-N,N,N-TRIMETHYL-9-OXO-7-[(PALMITOYLOXY)METHYL]-3,5,8-TRIOXA-4-PHOSPHAHEXACOSAN-1-AMINIUM 4-OXIDE
C42 H85 N O8 P
PZNPLUBHRSSFHT-RRHRGVEJSA-O
PGT
(Subject of Investigation/LOI)

Query on PGT



Download:Ideal Coordinates CCD File
BE [auth 7],
FE [auth 9]
(1S)-2-{[{[(2R)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL STEARATE
C40 H79 O10 P
KBPVYRBBONZJHF-AMAPPZPBSA-N
CRT
(Subject of Investigation/LOI)

Query on CRT



Download:Ideal Coordinates CCD File
DD [auth Z]
DE [auth 8]
EB [auth K]
ID [auth B]
IE [auth 0]
DD [auth Z],
DE [auth 8],
EB [auth K],
ID [auth B],
IE [auth 0],
JB [auth O],
KC [auth S],
LA [auth D],
ND [auth 2],
OC [auth U],
SC [auth X],
SD [auth 4],
UA [auth G],
YC [auth Q],
ZA [auth I],
ZD [auth 7]
SPIRILLOXANTHIN
C42 H60 O2
VAZQBTJCYODOSV-RISZBRKMSA-N
QAK
(Subject of Investigation/LOI)

Query on QAK



Download:Ideal Coordinates CCD File
DC [auth M](6~{R},10~{S},14~{R},19~{R},23~{S},24~{E},27~{S},28~{E})-2,6,10,14,19,23,27,31-octamethyldotriaconta-24,28-dien-2-ol
C40 H78 O
NKXXNXZGYNRQNV-BTRAWPHCSA-N
LMT
(Subject of Investigation/LOI)

Query on LMT



Download:Ideal Coordinates CCD File
CB [auth J]
CD [auth Z]
GD [auth B]
IB [auth O]
IC [auth R]
CB [auth J],
CD [auth Z],
GD [auth B],
IB [auth O],
IC [auth R],
MB [auth H],
MD [auth 2],
QA [auth F],
QD [auth 4],
SB [auth L],
UC [auth P],
XD [auth 6]
DODECYL-BETA-D-MALTOSIDE
C24 H46 O11
NLEBIOOXCVAHBD-QKMCSOCLSA-N
FE
(Subject of Investigation/LOI)

Query on FE



Download:Ideal Coordinates CCD File
ZB [auth M]FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
FME
Query on FME
A [auth C]
BA [auth 3]
C [auth E]
DA [auth 5]
E [auth G]
A [auth C],
BA [auth 3],
C [auth E],
DA [auth 5],
E [auth G],
FA [auth 7],
G [auth J],
HA [auth 9],
I [auth N],
N [auth R],
P [auth T],
R [auth V],
T [auth P],
V [auth Y],
X [auth A],
Z [auth 1]
L-PEPTIDE LINKINGC6 H11 N O3 SMET

Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONRELION3.0
MODEL REFINEMENTPHENIX1.16

Structure Validation

View Full Validation Report



Entry History 

& Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Biotechnology and Biological Sciences Research Council (BBSRC)United KingdomBB/M000265/1

Revision History  (Full details and data files)

  • Version 1.0: 2021-01-13
    Type: Initial release
  • Version 1.1: 2021-02-10
    Changes: Database references
  • Version 1.2: 2024-10-23
    Changes: Data collection, Database references, Structure summary
  • Version 1.3: 2026-09-02
    Type: Remediation
    Reason: Metalloprotein remediation
    Changes: Data collection, Derived calculations, Structure summary