5MDX

Cryo-EM structure of the PSII supercomplex from Arabidopsis thaliana


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Subunit and chlorophyll organization of the plant photosystem II supercomplex.

van Bezouwen, L.S.Caffarri, S.Kale, R.S.Kouril, R.Thunnissen, A.W.H.Oostergetel, G.T.Boekema, E.J.

(2017) Nat Plants 3: 17080-17080

  • DOI: https://doi.org/10.1038/nplants.2017.80
  • Primary Citation of Related Structures:  
    5MDX

  • PubMed Abstract: 

    Photosystem II (PSII) is a light-driven protein, involved in the primary reactions of photosynthesis. In plant photosynthetic membranes PSII forms large multisubunit supercomplexes, containing a dimeric core and up to four light-harvesting complexes (LHCs), which act as antenna proteins. Here we solved a three-dimensional (3D) structure of the C 2 S 2 M 2 supercomplex from Arabidopsis thaliana using cryo-transmission electron microscopy (cryo-EM) and single-particle analysis at an overall resolution of 5.3 Å. Using a combination of homology modelling and restrained refinement against the cryo-EM map, it was possible to model atomic structures for all antenna complexes and almost all core subunits. We located all 35 chlorophylls of the core region based on the cyanobacterial PSII structure, whose positioning is highly conserved, as well as all the chlorophylls of the LHCII S and M trimers. A total of 13 and 9 chlorophylls were identified in CP26 and CP24, respectively. Energy flow from LHC complexes to the PSII reaction centre is proposed to follow preferential pathways: CP26 and CP29 directly transfer to the core using several routes for efficient transfer; the S trimer is directly connected to CP43 and the M trimer can efficiently transfer energy to the core through CP29 and the S trimer.


  • Organizational Affiliation

    Electron microscopy and Protein crystallography group, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747 AG Groningen, The Netherlands.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II protein D1A,
Q [auth a]
343Arabidopsis thalianaMutation(s): 0 
EC: 1.10.3.9
Membrane Entity: Yes 
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II CP47 reaction center proteinB,
R [auth b]
507Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II CP43 reaction center proteinC,
FA [auth c]
459Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II D2 proteinD,
S [auth d]
352Arabidopsis thalianaMutation(s): 0 
EC: 1.10.3.9
Membrane Entity: Yes 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome b559 subunit alphaE,
T [auth e]
83Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome b559 subunit beta (PsbF)F,
U [auth f]
39Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein HG [auth H],
V [auth h]
72Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein IH [auth I],
W [auth i]
36Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein KI [auth K],
X [auth k]
37Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein LJ [auth L],
Y [auth l]
38Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein MK [auth M],
Z [auth m]
34Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
Oxygen-evolving enhancer protein 1-1, chloroplasticAA [auth o],
L [auth O]
247Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein TEA [auth t],
M [auth T]
33Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center W protein, chloroplasticDA [auth w],
N [auth W]
54Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 15
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein XBA [auth x],
O [auth X]
116Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 16
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein ZCA [auth z],
P [auth Z]
62Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 17
MoleculeChains Sequence LengthOrganismDetailsImage
Chlorophyll a-b binding protein CP29.1, chloroplasticGA [auth R],
LA [auth r]
250Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 18
MoleculeChains Sequence LengthOrganismDetailsImage
Chlorophyll a-b binding protein CP26, chloroplasticHA [auth S],
MA [auth s]
232Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 19
MoleculeChains Sequence LengthOrganismDetailsImage
Chlorophyll a-b binding protein 1, chloroplastic224Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 20
MoleculeChains Sequence LengthOrganismDetailsImage
Chlorophyll a-b binding protein, chloroplasticTA [auth 4],
XA [auth 8]
210Arabidopsis thalianaMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for Q9LMQ2 (Arabidopsis thaliana)
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Small Molecules
Ligands 5 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CHL
Query on CHL

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AE [auth R]
AF [auth G]
AI [auth n]
BE [auth R]
BF [auth G]
AE [auth R],
AF [auth G],
AI [auth n],
BE [auth R],
BF [auth G],
CF [auth G],
CG [auth Y],
CJ [auth 1],
CL [auth 5],
DF [auth G],
DG [auth Y],
DH [auth s],
EF [auth G],
EG [auth Y],
EH [auth s],
EI [auth n],
EK [auth 3],
EM [auth 7],
FG [auth Y],
FH [auth s],
FI [auth n],
FK [auth 3],
FM [auth 7],
GG [auth Y],
GI [auth n],
GJ [auth 1],
GL [auth 5],
HI [auth n],
HJ [auth 1],
HL [auth 5],
II [auth n],
IJ [auth 1],
IL [auth 5],
JE [auth S],
JJ [auth 1],
JK [auth 3],
JL [auth 5],
JM [auth 7],
KF [auth N],
KJ [auth 1],
KK [auth 3],
KL [auth 5],
KM [auth 7],
LK [auth 3],
LM [auth 7],
MH [auth g],
MK [auth 3],
MM [auth 7],
NE [auth S],
OE [auth S],
OF [auth N],
OI [auth y],
PE [auth S],
PF [auth N],
PG [auth r],
QF [auth N],
QG [auth r],
QH [auth g],
QJ [auth 1],
QL [auth 5],
RF [auth N],
RG [auth r],
RH [auth g],
RJ [auth 2],
RL [auth 6],
SF [auth N],
SH [auth g],
SI [auth y],
SK [auth 4],
SM [auth 8],
TH [auth g],
TI [auth y],
UH [auth g],
UI [auth y],
VI [auth y],
VJ [auth 2],
VL [auth 6],
WE [auth G],
WI [auth y],
WJ [auth 2],
WK [auth 4],
WL [auth 6],
WM [auth 8],
XJ [auth 2],
XK [auth 4],
XL [auth 6],
XM [auth 8],
YF [auth Y],
YJ [auth 2],
YK [auth 4],
YL [auth 6],
YM [auth 8],
ZD [auth R],
ZG [auth s],
ZK [auth 4],
ZM [auth 8]
CHLOROPHYLL B
C55 H70 Mg N4 O6
MWVCRINOIIOUAU-UYSPMESUSA-M
CLA
Query on CLA

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AB [auth A]
AC [auth C]
AD [auth b]
AG [auth Y]
AH [auth s]
AB [auth A],
AC [auth C],
AD [auth b],
AG [auth Y],
AH [auth s],
AJ [auth y],
AK [auth 2],
AL [auth 4],
AM [auth 6],
AN [auth 8],
BC [auth C],
BD [auth b],
BG [auth Y],
BH [auth s],
BI [auth n],
BJ [auth y],
BK [auth 2],
BL [auth 4],
BM [auth 6],
BN [auth 8],
CB [auth A],
CC [auth C],
CD [auth b],
CE [auth R],
CH [auth s],
CI [auth n],
CK [auth 2],
CM [auth 6],
DB [auth B],
DC [auth C],
DD [auth b],
DE [auth R],
DI [auth n],
DJ [auth 1],
DK [auth 2],
DL [auth 5],
DM [auth 6],
EB [auth B],
EC [auth C],
ED [auth b],
EE [auth R],
EJ [auth 1],
EL [auth 5],
FB [auth B],
FC [auth D],
FD [auth d],
FE [auth R],
FF [auth G],
FJ [auth 1],
FL [auth 5],
GB [auth B],
GE [auth R],
GF [auth G],
GH [auth s],
GK [auth 3],
GM [auth 7],
HB [auth B],
HC [auth D],
HD [auth d],
HE [auth R],
HF [auth G],
HG [auth Y],
HH [auth s],
HK [auth 3],
HM [auth 7],
IB [auth B],
IC [auth D],
ID [auth d],
IE [auth S],
IF [auth G],
IG [auth Y],
IH [auth s],
IK [auth 3],
IM [auth 7],
JB [auth B],
JF [auth G],
JG [auth Y],
JH [auth s],
JI [auth n],
KB [auth B],
KD [auth c],
KE [auth S],
KG [auth Y],
KH [auth s],
KI [auth n],
LB [auth B],
LC [auth a],
LD [auth c],
LE [auth S],
LF [auth N],
LG [auth Y],
LH [auth s],
LI [auth n],
LJ [auth 1],
LL [auth 5],
MB [auth B],
MC [auth a],
MD [auth c],
ME [auth S],
MF [auth N],
MG [auth r],
MI [auth n],
MJ [auth 1],
ML [auth 5],
NB [auth B],
ND [auth c],
NF [auth N],
NG [auth r],
NH [auth g],
NI [auth n],
NJ [auth 1],
NK [auth 3],
NL [auth 5],
NM [auth 7],
OB [auth B],
OC [auth a],
OD [auth c],
OG [auth r],
OH [auth g],
OJ [auth 1],
OK [auth 3],
OL [auth 5],
OM [auth 7],
PB [auth B],
PC [auth b],
PD [auth c],
PH [auth g],
PI [auth y],
PJ [auth 1],
PK [auth 3],
PL [auth 5],
PM [auth 7],
QB [auth B],
QC [auth b],
QD [auth c],
QE [auth S],
QI [auth y],
QK [auth 3],
QM [auth 7],
RB [auth B],
RC [auth b],
RD [auth c],
RE [auth S],
RI [auth y],
RK [auth 3],
RM [auth 7],
SB [auth B],
SC [auth b],
SD [auth c],
SE [auth S],
SG [auth r],
SJ [auth 2],
SL [auth 6],
TB [auth C],
TC [auth b],
TD [auth c],
TE [auth S],
TF [auth N],
TG [auth r],
TJ [auth 2],
TK [auth 4],
TL [auth 6],
TM [auth 8],
UB [auth C],
UC [auth b],
UD [auth c],
UE [auth S],
UF [auth N],
UG [auth r],
UJ [auth 2],
UK [auth 4],
UL [auth 6],
UM [auth 8],
VB [auth C],
VC [auth b],
VD [auth c],
VE [auth S],
VF [auth N],
VG [auth r],
VH [auth g],
VK [auth 4],
VM [auth 8],
WB [auth C],
WC [auth b],
WD [auth R],
WF [auth N],
WG [auth r],
WH [auth g],
XB [auth C],
XC [auth b],
XD [auth R],
XE [auth G],
XF [auth N],
XG [auth r],
XH [auth g],
XI [auth y],
YB [auth C],
YC [auth b],
YD [auth R],
YE [auth G],
YG [auth s],
YH [auth g],
YI [auth y],
ZA [auth A],
ZB [auth C],
ZC [auth b],
ZE [auth G],
ZF [auth Y],
ZH [auth g],
ZI [auth y],
ZJ [auth 2],
ZL [auth 6]
CHLOROPHYLL A
C55 H72 Mg N4 O5
ATNHDLDRLWWWCB-AENOIHSZSA-M
PHO
Query on PHO

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BB [auth A],
GC [auth D],
GD [auth d],
NC [auth a]
PHEOPHYTIN A
C55 H74 N4 O5
CQIKWXUXPNUNDV-RCBXBCQGSA-N
HEM
Query on HEM

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JC [auth E],
JD [auth e]
PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
FE2
Query on FE2

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KC [auth a],
YA [auth A]
FE (II) ION
Fe
CWYNVVGOOAEACU-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONRELION1.3
MODEL REFINEMENTPHENIXdev_2474

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-06-21
    Type: Initial release
  • Version 1.1: 2017-08-30
    Changes: Data collection, Experimental preparation, Refinement description
  • Version 1.2: 2019-04-24
    Changes: Data collection, Derived calculations, Other