5B66

Crystal structure analysis of Photosystem II complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.164 

Starting Model: experimental
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Literature

Two Different Structures of the Oxygen-Evolving Complex in the Same Polypeptide Frameworks of Photosystem II

Tanaka, A., Fukushima, Y., Kamiya, N.

(2017) J Am Chem Soc 139: 1718-1721

  • DOI: https://doi.org/10.1021/jacs.6b09666
  • Primary Citation of Related Structures:  
    5B5E, 5B66

  • PubMed Abstract: 

    The oxygen-evolving complex (OEC) forms the heart of photosystem II (PSII) in photosynthesis. The crystal structure of PSII from Thermosynechococcus vulcanus has been reported at a resolution of 1.9 Å and at an averaged X-ray dose of 0.43 MGy. The OEC structure is suggested to be partially reduced to Mn(II) by EXAFS and DFT computational studies. Recently, the "radiation-damage-free" structures have been published at 1.95 Å resolution using XFEL, but reports continued to appear that the OEC is reduced to the S 0 -state of the Kok cycle. To elucidate much more precise structure of the OEC, in this study two structures were determined at extremely low X-ray doses of 0.03 and 0.12 MGy using conventional synchrotron radiation source. The results indicated that the X-ray reduction effects on the OEC were very small in the low dose region below 0.12 MGy, that is, a threshold existed for the OEC structural changes caused by X-ray exposure. The OEC structures of the two identical monomers in the crystal were clearly different under the threshold of the radiation dose, although the surrounding polypeptide frameworks of PSII were the same. The assumption that the OECs in the crystal were in the dark-stable S 1 -state of the Kok cycle should be re-evaluated.

    • Organizational Affiliation: 

    Department of Chemistry, Graduate School of Science, Osaka City University , 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II protein D1A,
T [auth a]		344Thermostichus vulcanusMutation(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,
U [auth b]		505Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II CP43 reaction center proteinC,
V [auth c]		455Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II D2 proteinD,
W [auth d]		342Thermostichus vulcanusMutation(s): 0 
EC: 1.10.3.9
Membrane Entity: Yes 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome b559 subunit alphaE,
X [auth e]		83Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome b559 subunit betaF,
Y [auth f]		44Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein HG [auth H],
Z [auth h]		65Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein IAA [auth i],
H [auth I]		38Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein JBA [auth j],
I [auth J]		40Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein KCA [auth k],
J [auth K]		37Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein LDA [auth l],
K [auth L]		37Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein MEA [auth m],
L [auth M]		36Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II manganese-stabilizing polypeptideFA [auth o],
M [auth O]		244Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein TGA [auth t],
N [auth T]		32Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 15
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II 12 kDa extrinsic proteinHA [auth u],
O [auth U]		104Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Find proteins for P56152 (Thermostichus vulcanus)
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Entity ID: 16
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome c-550IA [auth v],
P [auth V]		137Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Find proteins for P0A387 (Thermostichus vulcanus)
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Entity ID: 17
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein Ycf12JA [auth y],
Q [auth Y]		30Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 18
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein XKA [auth x],
R [auth X]		40Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 19
MoleculeChains Sequence LengthOrganismDetailsImage
Photosystem II reaction center protein ZLA [auth z],
S [auth Z]		62Thermostichus vulcanusMutation(s): 0 
Membrane Entity: Yes 
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Small Molecules
Ligands 21 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
DGD
Query on DGD
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AM [auth h]
IF [auth H]
KK [auth c]
LK [auth c]
MK [auth c]
AM [auth h],
IF [auth H],
KK [auth c],
LK [auth c],
MK [auth c],
PE [auth D],
RD [auth C],
SD [auth C],
TD [auth C],
VL [auth d]
DIGALACTOSYL DIACYL GLYCEROL (DGDG)
C51 H96 O15
LDQFLSUQYHBXSX-HXXRYREZSA-N
CLA
Query on CLA
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AK [auth c]
BK [auth c]
CD [auth C]
CK [auth c]
DD [auth C]
AK [auth c],
BK [auth c],
CD [auth C],
CK [auth c],
DD [auth C],
DK [auth c],
ED [auth C],
EI [auth b],
EK [auth c],
FD [auth C],
FI [auth b],
FK [auth c],
GD [auth C],
GI [auth b],
GK [auth c],
HB [auth B],
HD [auth C],
HI [auth b],
HK [auth c],
HL [auth d],
IB [auth B],
ID [auth C],
II [auth b],
IK [auth c],
IL [auth d],
JB [auth B],
JD [auth C],
JI [auth b],
JL [auth d],
KB [auth B],
KD [auth C],
KE [auth D],
KI [auth b],
LB [auth B],
LD [auth C],
LE [auth D],
LH [auth a],
LI [auth b],
MA [auth A],
MB [auth B],
MD [auth C],
MH [auth a],
MI [auth b],
NA [auth A],
NB [auth B],
ND [auth C],
NE [auth D],
NI [auth b],
OB [auth B],
OD [auth C],
OI [auth b],
PA [auth A],
PB [auth B],
PH [auth a],
PI [auth b],
QB [auth B],
QI [auth b],
RB [auth B],
RI [auth b],
SB [auth B],
SI [auth b],
TB [auth B],
TI [auth b],
UB [auth B],
VB [auth B],
WB [auth B],
WJ [auth c],
XJ [auth c],
YJ [auth c],
ZJ [auth c]
CHLOROPHYLL A
C55 H72 Mg N4 O5
ATNHDLDRLWWWCB-AENOIHSZSA-M
PHO
Query on PHO
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ME [auth D],
NH [auth a],
OA [auth A],
OH [auth a]		PHEOPHYTIN A
C55 H74 N4 O5
CQIKWXUXPNUNDV-RCBXBCQGSA-N
SQD
Query on SQD
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FF [auth F]
JH [auth a]
PM [auth l]
RA [auth A]
RH [auth a]
FF [auth F],
JH [auth a],
PM [auth l],
RA [auth A],
RH [auth a],
XA [auth A],
XI [auth b],
YL [auth f]
1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL
C41 H78 O12 S
RVUUQPKXGDTQPG-JUDHQOGESA-N
LMG
Query on LMG
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AC [auth B]
HM [auth j]
NK [auth c]
OK [auth c]
SA [auth A]
AC [auth B],
HM [auth j],
NK [auth c],
OK [auth c],
SA [auth A],
SF [auth J],
SH [auth a],
UD [auth C],
YI [auth b],
ZD [auth C]
1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE
C45 H86 O10
DCLTVZLYPPIIID-CVELTQQQSA-N
PL9
Query on PL9
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RL [auth d],
VE [auth D],
WA [auth A],
XH [auth a]		2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE
C53 H80 O2
FKUYMLZIRPABFK-UHFFFAOYSA-N
LHG
Query on LHG
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BG [auth L]
DF [auth E]
LL [auth d]
ML [auth d]
NL [auth d]
BG [auth L],
DF [auth E],
LL [auth d],
ML [auth d],
NL [auth d],
QE [auth D],
QM [auth l],
RE [auth D],
SE [auth D]
1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE
C38 H75 O10 P
BIABMEZBCHDPBV-MPQUPPDSSA-N
HEC
Query on HEC
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HN [auth v],
XG [auth V]		HEME C
C34 H34 Fe N4 O4
HXQIYSLZKNYNMH-LJNAALQVSA-N
HEM
Query on HEM
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EF [auth E],
XL [auth e]		PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
RRX
Query on RRX
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HF [auth H],
RN [auth x]		(3R)-beta,beta-caroten-3-ol
C40 H56 O
DMASLKHVQRHNES-FKKUPVFPSA-N
BCR
Query on BCR
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AG [auth K]
BN [auth t]
IM [auth j]
JK [auth c]
KL [auth d]
AG [auth K],
BN [auth t],
IM [auth j],
JK [auth c],
KL [auth d],
NM [auth k],
OE [auth D],
OM [auth k],
PD [auth C],
QA [auth A],
QD [auth C],
QG [auth T],
QH [auth a],
UI [auth b],
VI [auth b],
WI [auth b],
XB [auth B],
YB [auth B],
ZB [auth B],
ZF [auth K]
BETA-CAROTENE
C40 H56
OENHQHLEOONYIE-JLTXGRSLSA-N
LMT
Query on LMT
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AI [auth a]
BF [auth E]
CJ [auth b]
DG [auth M]
DJ [auth b]
AI [auth a],
BF [auth E],
CJ [auth b],
DG [auth M],
DJ [auth b],
FC [auth B],
GC [auth B],
HC [auth B],
HH [auth Z],
MF [auth I],
RG [auth T],
RM [auth m],
SK [auth c],
SM [auth m],
UF [auth J],
UN [auth z],
ZL [auth f]
DODECYL-BETA-D-MALTOSIDE
C24 H46 O11
NLEBIOOXCVAHBD-QKMCSOCLSA-N
OEX
Query on OEX
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BI [auth a],
FB [auth A]		CA-MN4-O5 CLUSTER
Ca Mn4 O5
SEXWDHMBWJEXOJ-UHFFFAOYSA-N
HTG
Query on HTG
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AF [auth D]
AJ [auth b]
BC [auth B]
CC [auth B]
CI [auth b]
AF [auth D],
AJ [auth b],
BC [auth B],
CC [auth B],
CI [auth b],
DC [auth B],
DI [auth b],
DN [auth u],
GG [auth O],
GL [auth d],
JE [auth C],
LC [auth B],
MC [auth B],
PK [auth c],
QK [auth c],
QN [auth v],
VD [auth C],
WD [auth C],
XD [auth C],
YG [auth V],
ZI [auth b]
heptyl 1-thio-beta-D-glucopyranoside
C13 H26 O5 S
HPEGNLMTTNTJSP-LBELIVKGSA-N
DMS
Query on DMS
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AB [auth A]
AE [auth C]
AH [auth V]
AL [auth c]
AN [auth o]
AB [auth A],
AE [auth C],
AH [auth V],
AL [auth c],
AN [auth o],
BB [auth A],
BE [auth C],
BH [auth V],
BL [auth c],
BM [auth h],
CB [auth A],
CE [auth C],
CH [auth V],
CL [auth c],
DB [auth A],
DE [auth C],
DH [auth V],
DL [auth c],
EE [auth C],
EH [auth V],
EL [auth c],
EN [auth u],
FE [auth C],
FH [auth V],
FL [auth c],
FN [auth u],
GE [auth C],
GF [auth F],
GJ [auth b],
GM [auth i],
GN [auth u],
HE [auth C],
HG [auth O],
HJ [auth b],
IE [auth C],
IG [auth O],
IJ [auth b],
IN [auth v],
JF [auth H],
JG [auth O],
JJ [auth b],
JN [auth v],
KG [auth O],
KJ [auth b],
KN [auth v],
LG [auth O],
LJ [auth b],
LM [auth j],
LN [auth v],
MG [auth O],
MJ [auth b],
MN [auth v],
NG [auth O],
NJ [auth b],
NN [auth v],
OC [auth B],
OG [auth O],
OJ [auth b],
ON [auth v],
PC [auth B],
PG [auth O],
PJ [auth b],
PN [auth v],
QC [auth B],
QJ [auth b],
RC [auth B],
SC [auth B],
SL [auth d],
TC [auth B],
TL [auth d],
UC [auth B],
UG [auth U],
UL [auth d],
UM [auth o],
VC [auth B],
VG [auth U],
VM [auth o],
WC [auth B],
WE [auth D],
WG [auth U],
WK [auth c],
WM [auth o],
XC [auth B],
XE [auth D],
XK [auth c],
XM [auth o],
YC [auth B],
YE [auth D],
YK [auth c],
YM [auth o],
ZA [auth A],
ZC [auth B],
ZE [auth D],
ZK [auth c],
ZM [auth o]
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
BCT
Query on BCT
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GB [auth A],
VH [auth a]		BICARBONATE ION
C H O3
BVKZGUZCCUSVTD-UHFFFAOYSA-M
FE2
Query on FE2
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EB [auth A],
ZH [auth a]		FE (II) ION
Fe
CWYNVVGOOAEACU-UHFFFAOYSA-N
CA
Query on CA
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BJ [auth b]
EC [auth B]
FG [auth O]
RK [auth c]
TM [auth o]
BJ [auth b],
EC [auth B],
FG [auth O],
RK [auth c],
TM [auth o],
ZG [auth V]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
CL
Query on CL
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TA [auth A],
TH [auth a],
UA [auth A],
UH [auth a]		CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
MG
Query on MG
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JM [auth j],
TF [auth J]		MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
UNL
Query on UNL
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AD [auth B]
BD [auth B]
CF [auth E]
CG [auth L]
CM [auth h]
AD [auth B],
BD [auth B],
CF [auth E],
CG [auth L],
CM [auth h],
CN [auth t],
DM [auth i],
EG [auth M],
EJ [auth b],
EM [auth i],
FJ [auth b],
FM [auth i],
GH [auth X],
IC [auth B],
IH [auth Z],
JC [auth B],
KC [auth B],
KF [auth H],
KH [auth a],
KM [auth j],
LF [auth H],
MM [auth j],
NC [auth B],
NF [auth I],
OF [auth I],
OL [auth d],
PF [auth I],
PL [auth d],
QF [auth I],
QL [auth d],
RF [auth I],
RJ [auth b],
SG [auth T],
SJ [auth b],
SN [auth x],
TE [auth D],
TG [auth U],
TJ [auth b],
TK [auth c],
TN [auth z],
UE [auth D],
UJ [auth b],
UK [auth c],
VA [auth A],
VF [auth J],
VJ [auth b],
VK [auth c],
WF [auth J],
WH [auth a],
WL [auth e],
XF [auth J],
YA [auth A],
YD [auth C],
YF [auth J],
YH [auth a]
Unknown ligand
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
FME
Query on FME		AA [auth i],
H [auth I]		L-PEPTIDE LINKINGC6 H11 N O3 SMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.164 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 121.465α = 90
b = 228.176β = 90
c = 286.422γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


View more in-depth experimental data
Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Grants-in-Aid for Scientific ResearchJapanH24227002

Revision History  (Full details and data files)

  • Version 1.0: 2017-02-01
    Type: Initial release
  • Version 1.1: 2017-02-22
    Changes: Database references
  • Version 2.0: 2019-10-09
    Changes: Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary
  • Version 2.1: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Derived calculations, Structure summary
  • Version 3.0: 2023-11-08
    Changes: Data collection, Database references, Non-polymer description, Refinement description, Structure summary
  • Version 3.1: 2024-10-23
    Changes: Structure summary