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- EMDB-61973: Structural insights into photosystem I complex of Bryopsis corticulans -

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Basic information

Entry
Database: EMDB / ID: EMD-61973
TitleStructural insights into photosystem I complex of Bryopsis corticulans
Map data
Sample
  • Complex: Bc-PSI-LHCI
    • Protein or peptide: x 22 types
  • Ligand: x 12 types
KeywordsPSI-LHCI supercomplex / PHOTOSYNTHESIS
Function / homology
Function and homology information


plastid thylakoid membrane / chloroplast thylakoid lumen / photosynthesis, light harvesting / photosystem I reaction center / photosystem I / photosynthetic electron transport in photosystem I / photosystem I / photosystem II / chlorophyll binding / chloroplast thylakoid membrane ...plastid thylakoid membrane / chloroplast thylakoid lumen / photosynthesis, light harvesting / photosystem I reaction center / photosystem I / photosynthetic electron transport in photosystem I / photosystem I / photosystem II / chlorophyll binding / chloroplast thylakoid membrane / photosynthesis / chloroplast / 4 iron, 4 sulfur cluster binding / oxidoreductase activity / electron transfer activity / protein domain specific binding / metal ion binding
Similarity search - Function
Photosystem I PsaH, reaction centre subunit VI / Photosystem I reaction centre subunit VI / Photosystem I reaction center subunit psaK, plant / Photosystem I reaction center subunit V/PsaK, plant / Photosystem I PsaG/PsaK domain, chloroplastic / Photosystem I PsaM, reaction centre superfamily / Photosystem I PsaM, reaction centre / Photosystem I protein M (PsaM) / Photosystem I reaction center subunit V/PsaK / Photosystem I psaG / psaK ...Photosystem I PsaH, reaction centre subunit VI / Photosystem I reaction centre subunit VI / Photosystem I reaction center subunit psaK, plant / Photosystem I reaction center subunit V/PsaK, plant / Photosystem I PsaG/PsaK domain, chloroplastic / Photosystem I PsaM, reaction centre superfamily / Photosystem I PsaM, reaction centre / Photosystem I protein M (PsaM) / Photosystem I reaction center subunit V/PsaK / Photosystem I psaG / psaK / Photosystem I PsaL, reaction centre subunit XI / Photosystem I, reaction centre subunit XI / Photosystem I PsaL, reaction centre subunit XI superfamily / Photosystem I reaction centre subunit XI / Photosystem I reaction centre subunit VIII / Photosystem I reaction centre subunit VIII / Photosystem I reaction centre subunit VIII superfamily / Photosystem I PsaF, reaction centre subunit III / Photosystem I PsaF, reaction centre subunit III superfamily / Photosystem I reaction centre subunit III / Photosystem I PsaD / Photosystem I, reaction centre subunit PsaD superfamily / PsaD / Photosystem I PsaE, reaction centre subunit IV / Photosystem I reaction centre subunit IV / PsaE / Chlorophyll A-B binding protein, plant and chromista / Chlorophyll A-B binding protein / Photosystem I PsaJ, reaction centre subunit IX superfamily / Chlorophyll A-B binding protein / Photosystem I PsaJ, reaction centre subunit IX / Photosystem I reaction centre subunit IX / PsaJ / Photosystem I protein PsaC / Photosystem I PsaA / Photosystem I PsaB / Photosystem I PsaA/PsaB, conserved site / Photosystem I psaA and psaB proteins signature. / : / Photosystem I PsaA/PsaB / Photosystem I PsaA/PsaB superfamily / Photosystem I psaA/psaB protein / Electron transport accessory-like domain superfamily / 4Fe-4S dicluster domain / 4Fe-4S ferredoxin, iron-sulphur binding, conserved site / 4Fe-4S ferredoxin-type iron-sulfur binding region signature. / 4Fe-4S ferredoxin-type iron-sulfur binding domain profile. / 4Fe-4S ferredoxin-type, iron-sulphur binding domain
Similarity search - Domain/homology
Photosystem I reaction center subunit XII / Photosystem I P700 chlorophyll a apoprotein A1 / Photosystem I reaction center subunit IX / PsaK / Photosystem I reaction center subunit XI, chloroplastic / Chlorophyll a-b binding protein, chloroplastic / Chlorophyll a-b binding protein, chloroplastic / Chlorophyll a-b binding protein, chloroplastic / Chlorophyll a-b binding protein, chloroplastic / Chlorophyll a-b binding protein, chloroplastic ...Photosystem I reaction center subunit XII / Photosystem I P700 chlorophyll a apoprotein A1 / Photosystem I reaction center subunit IX / PsaK / Photosystem I reaction center subunit XI, chloroplastic / Chlorophyll a-b binding protein, chloroplastic / Chlorophyll a-b binding protein, chloroplastic / Chlorophyll a-b binding protein, chloroplastic / Chlorophyll a-b binding protein, chloroplastic / Chlorophyll a-b binding protein, chloroplastic / Chlorophyll a-b binding protein, chloroplastic / Chlorophyll a-b binding protein, chloroplastic / photosystem I / Chlorophyll a-b binding protein, chloroplastic / Photosystem I iron-sulfur center / Photosystem I reaction center subunit II, chloroplastic / PsaE / Photosystem I reaction center subunit III / PsaH / Photosystem I reaction center subunit VIII
Similarity search - Component
Biological speciesBryopsis corticulans (plant)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.68 Å
AuthorsLiu XY / Wang WD
Funding support China, 1 items
OrganizationGrant numberCountry
Chinese Academy of Sciences China
CitationJournal: Plant Commun / Year: 2026
Title: Cryo-EM structural analyses of chlorophyll b-enriched PSI-LHC and PSII-LHC supercomplexes of the siphonous green alga Bryopsis corticulans.
Authors: Xueyang Liu / Zhenhua Li / Liangliang Shen / Lili Shen / Bin Wu / Xiaoyi Li / Yanyan Yang / Shan Gao / Guangye Han / Tingyun Kuang / Cheng Liu / Jian-Ren Shen / Wenda Wang /
Abstract: The light-harvesting complexes of photosystem I (PSI) and PSII (LHCI and LHCII) in Bryopsis corticulans (B. corticulans) are homologous to those in Chlamydomonas reinhardtii and land plants but ...The light-harvesting complexes of photosystem I (PSI) and PSII (LHCI and LHCII) in Bryopsis corticulans (B. corticulans) are homologous to those in Chlamydomonas reinhardtii and land plants but exhibit a distinct chlorophyll (Chl) and carotenoid composition. Here, we report cryo-electron microscopy structures of the PSI-LHCI-LHCII supercomplex, comprising three LHCII trimers, and the CSMN-type PSII-LHCII supercomplex from B. corticulans. In the PSI supercomplex, ten LHCI subunits assemble into two belts and one heterodimer, coordinating a total of 86 Chl a and 65 Chl b molecules (Chl a/b ratio of 1.3, compared with 3.4 in C. reinhardtii), as well as 18 siphonaxanthin, 2 siphonein, and 13 α-carotene molecules. Of the three LHCII trimers bound to the PSI-LHCI supercomplex, two are anchored to the PSI core primarily via phosphorylated subunits, whereas the third, non-phosphorylated trimer is stabilized through interactions with Lhca-d and the adjacent LHCII trimer. In the CSMN-type PSII-LHCII supercomplex, the N-LHCII is positioned closer to the PSII core than in C. reinhardtii, likely owing to loss of the linker motif in the N-terminal region of B. corticulans CP29. Structure-based energy transfer analysis suggests that this spatial rearrangement enhances the efficiency of excitation energy transfer from N-LHCII to the PSII core. Collectively, these findings reveal structural adaptations that underlie the acclimation strategies of siphonous green algae inhabiting intertidal environments.
History
DepositionOct 16, 2024-
Header (metadata) releaseMar 4, 2026-
Map releaseMar 4, 2026-
UpdateOct 7, 2026-
Current statusOct 7, 2026Processing site: PDBc / Status: Released

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Structure visualization

Supplemental images

emd_61973.png

Downloads & links

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Map

FileDownload / File: emd_61973.map.gz / Format: CCP4 / Size: 512 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
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Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.04 Å/pix.
x 512 pix.
= 532.48 Å		1.04 Å/pix.
x 512 pix.
= 532.48 Å		1.04 Å/pix.
x 512 pix.
= 532.48 Å

Surface

Projections

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.04 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.203
Minimum - Maximum-0.3855395 - 1.5356356
Average (Standard dev.)0.00015935786 (±0.024521083)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions512512512
Spacing512512512
CellA=B=C: 532.48 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_61973_half_map_1.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_61973_half_map_2.map
Projections & Slices
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Sample components

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Entire : Bc-PSI-LHCI

EntireName: Bc-PSI-LHCI
Components
  • Complex: Bc-PSI-LHCI
    • Protein or peptide: Chlorophyll a-b binding protein, chloroplastic
    • Protein or peptide: Chlorophyll a-b binding protein, chloroplastic
    • Protein or peptide: Chlorophyll a-b binding protein, chloroplastic
    • Protein or peptide: Chlorophyll a-b binding protein, chloroplastic
    • Protein or peptide: Chlorophyll a-b binding protein, chloroplastic
    • Protein or peptide: Chlorophyll a-b binding protein, chloroplastic
    • Protein or peptide: Chlorophyll a-b binding protein, chloroplastic
    • Protein or peptide: Chlorophyll a-b binding protein, chloroplastic
    • Protein or peptide: Photosystem I P700 chlorophyll a apoprotein A1
    • Protein or peptide: photosystem I
    • Protein or peptide: Photosystem I reaction center subunit II, chloroplastic
    • Protein or peptide: PsaE
    • Protein or peptide: Photosystem I reaction center subunit III
    • Protein or peptide: PsaG
    • Protein or peptide: Photosystem I reaction center subunit VIII
    • Protein or peptide: Photosystem I reaction center subunit IX
    • Protein or peptide: PSI subunit V
    • Protein or peptide: Photosystem I iron-sulfur center
    • Protein or peptide: PsaK
    • Protein or peptide: Photosystem I reaction center subunit XII
    • Protein or peptide: PsaO
    • Protein or peptide: PsaH
  • Ligand: CHLOROPHYLL B
  • Ligand: CHLOROPHYLL A
  • Ligand: (6'R,11cis,11'cis,13cis,15cis)-4',5'-didehydro-5',6'-dihydro-beta,beta-carotene
  • Ligand: Siphonein
  • Ligand: 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE
  • Ligand: 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL
  • Ligand: 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE
  • Ligand: Siphonaxanthin
  • Ligand: PHYLLOQUINONE
  • Ligand: CHLOROPHYLL A ISOMER
  • Ligand: IRON/SULFUR CLUSTER
  • Ligand: DIGALACTOSYL DIACYL GLYCEROL (DGDG)

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Supramolecule #1: Bc-PSI-LHCI

SupramoleculeName: Bc-PSI-LHCI / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#22
Source (natural)Organism: Bryopsis corticulans (plant)

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Macromolecule #1: Chlorophyll a-b binding protein, chloroplastic

MacromoleculeName: Chlorophyll a-b binding protein, chloroplastic / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 26.910092 KDa
SequenceString: MVFALSSFVG RPVVVGHAQP RAVRNVTRMA AERPMWYPGA TAPKHLDGSM LGDYGYDPLD LGANPDSLAW FREAELMNGR YAMLGVMGG AFVNAFGLPN WWEAGAKVDV PISLGVLIAL ELAIFAVFEY KRYEGFKKTG ECGVLSFMPF DPLNMRSEEN K LKELKNGR ...String:
MVFALSSFVG RPVVVGHAQP RAVRNVTRMA AERPMWYPGA TAPKHLDGSM LGDYGYDPLD LGANPDSLAW FREAELMNGR YAMLGVMGG AFVNAFGLPN WWEAGAKVDV PISLGVLIAL ELAIFAVFEY KRYEGFKKTG ECGVLSFMPF DPLNMRSEEN K LKELKNGR LAMVASVGFI SQYLVTGKGP VDNLKDHIVD PLHNNIYTSS VGNEVTVAIV FAAMWPMFAE AKKALGGKDD TF RAIPW

UniProtKB: Chlorophyll a-b binding protein, chloroplastic

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Macromolecule #2: Chlorophyll a-b binding protein, chloroplastic

MacromoleculeName: Chlorophyll a-b binding protein, chloroplastic / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 24.458012 KDa
SequenceString: MASALMQKSC VSAVVARPSR VTNRSVRVQA RPGNWLPGSE APSYLPEDLP GNYGYDPLGI SENPANMERM IECEVMNGRW AMLAVPGML AQEALGFGNW HDAPSWVYEG GSPTWFGAGM PITDIKLLAV IELVLMGGAE AMRASEPDME KRVYPGGAFD P AGFSKGNL ...String:
MASALMQKSC VSAVVARPSR VTNRSVRVQA RPGNWLPGSE APSYLPEDLP GNYGYDPLGI SENPANMERM IECEVMNGRW AMLAVPGML AQEALGFGNW HDAPSWVYEG GSPTWFGAGM PITDIKLLAV IELVLMGGAE AMRASEPDME KRVYPGGAFD P AGFSKGNL AELKLKEIKN ARLAMFAFVG FVLQYYATGK GPVQCWTEHI ADPLGANFAT NGTSLPFF

UniProtKB: Chlorophyll a-b binding protein, chloroplastic

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Macromolecule #3: Chlorophyll a-b binding protein, chloroplastic

MacromoleculeName: Chlorophyll a-b binding protein, chloroplastic / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 27.808264 KDa
SequenceString: MASILQQSTA FSCRSGAFTS STRSQNASRA QGARNVAVKA ADRPVWYPGN SPPEWLDGSL PGDYGYDPLG LASDPEMLKW WVQAELVHG RWAMLGTVGM IVPGVAARAG GDFPQWYDAG KVYIENSSIP FGALLMTQVL MMGWSEMMRY YEFVSPGSQG T GSFMGFTE ...String:
MASILQQSTA FSCRSGAFTS STRSQNASRA QGARNVAVKA ADRPVWYPGN SPPEWLDGSL PGDYGYDPLG LASDPEMLKW WVQAELVHG RWAMLGTVGM IVPGVAARAG GDFPQWYDAG KVYIENSSIP FGALLMTQVL MMGWSEMMRY YEFVSPGSQG T GSFMGFTE AFAGTGENGY PGGRFFDPFG LAKGDPAKLQ EYKVKEIKNG RLAMFSCLGY YAQYAATGKG PVDNWFDHIA DP FHNTCAT NGVSVPFLN

UniProtKB: Chlorophyll a-b binding protein, chloroplastic

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Macromolecule #4: Chlorophyll a-b binding protein, chloroplastic

MacromoleculeName: Chlorophyll a-b binding protein, chloroplastic / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 30.409689 KDa
SequenceString: MAAALLSSPI VAGVQAPKAK FVSTPKVNPT VHGLGAALKV KAEDAKVAKV DRSKDTLFFA DENSLTYLDG TLPGDYGFDP FGLLEPGNG DVGFINPSWL RYSEVIHGRF AMLGAAGCIT PEILSSLGVI PESTGIVWYR NGVIPPAGSS DVYWVDPYTL F FVEVVAMQ ...String:
MAAALLSSPI VAGVQAPKAK FVSTPKVNPT VHGLGAALKV KAEDAKVAKV DRSKDTLFFA DENSLTYLDG TLPGDYGFDP FGLLEPGNG DVGFINPSWL RYSEVIHGRF AMLGAAGCIT PEILSSLGVI PESTGIVWYR NGVIPPAGSS DVYWVDPYTL F FVEVVAMQ FAELRRLQDY RNPGSMGKQY FLGLEGVLGG SGDPSYPGGA FFNMFNLGKT EESMKVMKTR EIKNGRLAMM AM FGFGAQA ILTGKGPYQN LLDHLSDPFN NNILTNWTSV YGQL

UniProtKB: Chlorophyll a-b binding protein, chloroplastic

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Macromolecule #5: Chlorophyll a-b binding protein, chloroplastic

MacromoleculeName: Chlorophyll a-b binding protein, chloroplastic / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 29.30068 KDa
SequenceString: MGAILSAGRA HVAFSSKSVQ RTGFRAVSNG SRVTMSASRP LWLPGSTPPA HLDGSMTGDF GWDPLGLGAN PEAMTWFREA ELQNGRWAM MGVFGILVQE LVKPDVFWYD APTKIDLPFN IIGIVAFQAF AMHYVEIRRW QDLRKPGSVN KDPIFSNYSL P EHEPGYPG ...String:
MGAILSAGRA HVAFSSKSVQ RTGFRAVSNG SRVTMSASRP LWLPGSTPPA HLDGSMTGDF GWDPLGLGAN PEAMTWFREA ELQNGRWAM MGVFGILVQE LVKPDVFWYD APTKIDLPFN IIGIVAFQAF AMHYVEIRRW QDLRKPGSVN KDPIFSNYSL P EHEPGYPG GIFAPFVPGD IEELKLKELK NARLSMLAFV GFVMQAQITG KGPIACWTDH LADPFGTTIF SKAVITLGGA VK PTCQIPD HVAFQGIDIP TPCFFEGFWP

UniProtKB: Chlorophyll a-b binding protein, chloroplastic

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Macromolecule #6: Chlorophyll a-b binding protein, chloroplastic

MacromoleculeName: Chlorophyll a-b binding protein, chloroplastic / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 28.621643 KDa
SequenceString: MAACGMATAA PFVGTQKNST LRTSSTTRPR PVNCSAADRK LWAPGVAAPS YLDGSLAGDY GWDPMGLSSD PKALAWYRQA ELVHSRWAM MGVVGILGQE ILNPDVFWYE AGLPKNLPEQ VSGLNLGGIL AFEFCMMHYV EVRRWQDYKN FGSVNEDPVF K GNSVPNEV ...String:
MAACGMATAA PFVGTQKNST LRTSSTTRPR PVNCSAADRK LWAPGVAAPS YLDGSLAGDY GWDPMGLSSD PKALAWYRQA ELVHSRWAM MGVVGILGQE ILNPDVFWYE AGLPKNLPEQ VSGLNLGGIL AFEFCMMHYV EVRRWQDYKN FGSVNEDPVF K GNSVPNEV MGYPGGIFDP FGFAKGKDIE DLKTKEIKNG RLAMVAWTGF ALQAQATGKG PIACWKDHLA DPFVSNITAN IG TCVIPDS VDVGGVNIPL YCLWPGQ

UniProtKB: Chlorophyll a-b binding protein, chloroplastic

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Macromolecule #7: Chlorophyll a-b binding protein, chloroplastic

MacromoleculeName: Chlorophyll a-b binding protein, chloroplastic / type: protein_or_peptide / ID: 7 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 26.575912 KDa
SequenceString: MATMMASSGV VARPAAFVGT QLPKVGVAAR PSLAVVRAAD RPIWLPGADV PEWLDGTIPG DFGYDPLKLG KDPETLKWYV QAELVHGRF AMMGLVGMLV PELLTNAGIG LPAKGTEWFN AGAAPMFAPT GVLFAMQFLL MGWAEIRRYQ DFKNPGSVNV D PIFGGKLP ...String:
MATMMASSGV VARPAAFVGT QLPKVGVAAR PSLAVVRAAD RPIWLPGADV PEWLDGTIPG DFGYDPLKLG KDPETLKWYV QAELVHGRF AMMGLVGMLV PELLTNAGIG LPAKGTEWFN AGAAPMFAPT GVLFAMQFLL MGWAEIRRYQ DFKNPGSVNV D PIFGGKLP DGNIPGYPGG IFDPFGFAKG DVDSLKLKEV KNGRLAMFAT LGFYCQAVVT GKGPIACWTS HLADPWANNV WS IELAKVI K

UniProtKB: Chlorophyll a-b binding protein, chloroplastic

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Macromolecule #8: Chlorophyll a-b binding protein, chloroplastic

MacromoleculeName: Chlorophyll a-b binding protein, chloroplastic / type: protein_or_peptide / ID: 8 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 24.152645 KDa
SequenceString: MASSMLLGLT KPVVVGGARV QARRNMNVAC NAASRPMWLV GASAPDYLDG SMAGDYGYDP LGLGSDADRL AWYREAEKVN GRWAMNAVA GIVFCELLGI QTNWWEVGQN PDLPVDLPFN ALVAIEAVIM GFFEVKRYQG WKDTGMSGLN DSFPWDPLGM T SERVELAE ...String:
MASSMLLGLT KPVVVGGARV QARRNMNVAC NAASRPMWLV GASAPDYLDG SMAGDYGYDP LGLGSDADRL AWYREAEKVN GRWAMNAVA GIVFCELLGI QTNWWEVGQN PDLPVDLPFN ALVAIEAVIM GFFEVKRYQG WKDTGMSGLN DSFPWDPLGM T SERVELAE IKNGRLAMFA WTGFIAQAVV VRKGPVACLN AHLADPFGQN ILTNVLNIPE NIAQ

UniProtKB: Chlorophyll a-b binding protein, chloroplastic

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Macromolecule #9: Photosystem I P700 chlorophyll a apoprotein A1

MacromoleculeName: Photosystem I P700 chlorophyll a apoprotein A1 / type: protein_or_peptide / ID: 9 / Number of copies: 1 / Enantiomer: LEVO / EC number: photosystem I
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 83.412336 KDa
SequenceString: MTISPPEREI KKVKVIVDRN TTDTSFEKWA KPGHFSRTLA KGPTTTTWIW NLHADAHDFD SHTSDLEDIS RKVFSAHFGQ LGIILIWLS GMYFHGARFS NYEAWLSDPT HIKPSAQVVW PIVGQEILNG DVGGGFQGIQ ITSGFFQLWR ASGITSELEL Y STALGGLL ...String:
MTISPPEREI KKVKVIVDRN TTDTSFEKWA KPGHFSRTLA KGPTTTTWIW NLHADAHDFD SHTSDLEDIS RKVFSAHFGQ LGIILIWLS GMYFHGARFS NYEAWLSDPT HIKPSAQVVW PIVGQEILNG DVGGGFQGIQ ITSGFFQLWR ASGITSELEL Y STALGGLL LASAMFFAGW FHYHKAAPKL EWFQNVESMM NHHLAGLLGL GSLGWAGHQI HLSIPINKLL DAGVDPKEIP LP HEFLLNR ELMAGLYPSF SAGLKPFFTL NWSEYSDFLT FKGGLNPING GLWLTDIAHH HLAIAVLFII AGHMYRTNWG IGH SMKEIL ESHKGPFTGA GHQGLYEILT NSWHAQLAIN LALFGSLSII VAHHMYAMPP YPYLATDYGT QLSLFTHHTW IGGF CIVGA GAHAAIFMVR DYDPTNNYNN LLDRVIRHRD AIISHLNWVC IFLGFHSFGL YIHNDTMSAL GRPQDMFSDT TIQLQ PIFA QWIQSIHYAA PQLTAPTASA ATSLTWGGDI VSVGGKVAMM PISLGTSDFM VHHIHAFTIH VTALILLKGV LYSRSS RLI PDKANLGFRF PCDGPGRGGT CQVSAWDHVF LGLFWMYNSL SIVIFHFSWK MQSDVWGTVS ESGVSHITGG NFANSAN AI NGWLRDFLWA QSSQVIQSYG SALSAYGLVF LGAHFVWAFS LMFLFSGRGY WQELIESILW AHNKLKVAPA IQPRALSI T QGRAVGVAHY IFGGIVTTWS FFLARIIAVG

UniProtKB: Photosystem I P700 chlorophyll a apoprotein A1

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Macromolecule #10: photosystem I

MacromoleculeName: photosystem I / type: protein_or_peptide / ID: 10 / Number of copies: 1 / Enantiomer: LEVO / EC number: photosystem I
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 82.164461 KDa
SequenceString: MATKFPKFSQ GLAQDPTTRR IWFGVATAHD FESHDSITEE TLYQKIFASH FGQLSIIFLW TSGNLFHVAW QGNFEAWVQD PLHIRPIAH AIWDPHFGQS AVEAFTRGGA SGPVNIATSG VYQWWYTIGM RTNQDLYQGS VFLSIAAGLF LIAGWLHLQP K FQPTLSWF ...String:
MATKFPKFSQ GLAQDPTTRR IWFGVATAHD FESHDSITEE TLYQKIFASH FGQLSIIFLW TSGNLFHVAW QGNFEAWVQD PLHIRPIAH AIWDPHFGQS AVEAFTRGGA SGPVNIATSG VYQWWYTIGM RTNQDLYQGS VFLSIAAGLF LIAGWLHLQP K FQPTLSWF KNAESRLNHH LAGLFGVSSL AWTGHLVHVA IPESRGIHVR WDNFLTILPH PLGLKPFFTG NWSAYAQNPD TI NHIFSTN TGSGDAILTF LGGFHPQTQS LWLTDMAHHH LAIAVLFIIA GHMYRTNFGI GHSMKEILDM HTPPSGNLGA GHQ NLFDTI NNSLHFQLGL ALASAGTICS MVAQHMYSLP AYAFIASDFT TQASLYTHHQ YIAGFMLCGA FAHGAIFFIR DYDP VANKG NVLARILDHK EAIISHLSWV SLFLGFHTLG LYVHNDVMLA FGTPEKQILI EPVFAQWIQA AQGKSLYGFD FLLAS STSP AFNASQTVWL PGWLDAINNP TNSLFLTIGP GDFLVHHAIA LGLHTTTLIL VKGALDARGS KLMPDKKDFG YSFPCD GPG RGGTCDISAW DAFYLSVFWM LNTIGWVTFY WHWKHLGIWQ GNVNQFNESS TYLMGWLRDY LWLNSSQLIN GYNPFGM NS LSVWAWMFLF GHLVYATGFM FLISWRGYWQ ELIETLAWAH ERTPLANLVR WKDKPVALSI VQARLVGLAH FSVGYIFT Y AAFLIASTSG KFG

UniProtKB: photosystem I

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Macromolecule #11: Photosystem I reaction center subunit II, chloroplastic

MacromoleculeName: Photosystem I reaction center subunit II, chloroplastic
type: protein_or_peptide / ID: 11 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 21.733045 KDa
SequenceString: MASSMTSSRT TVLTSRPAFA GQRVCAKVVR TRVTPAKFAV RAADAEAPAE EAPKVWTPPQ LDPNTPSPIF GGSTGGLLRK AQVEEFYVI TWEAKKEQIF EMPTGGAAIM RKGPNLLKLA RKEQCLALTT QLRTKFKTDA CFYRVFPSGE VQYLHPKDGV Y PEKVNAGR ...String:
MASSMTSSRT TVLTSRPAFA GQRVCAKVVR TRVTPAKFAV RAADAEAPAE EAPKVWTPPQ LDPNTPSPIF GGSTGGLLRK AQVEEFYVI TWEAKKEQIF EMPTGGAAIM RKGPNLLKLA RKEQCLALTT QLRTKFKTDA CFYRVFPSGE VQYLHPKDGV Y PEKVNAGR EGANQNMRSI GENVNPIKVK FTGKIGPFDV

UniProtKB: Photosystem I reaction center subunit II, chloroplastic

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Macromolecule #12: PsaE

MacromoleculeName: PsaE / type: protein_or_peptide / ID: 12 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 10.096458 KDa
SequenceString:
MQFSAVRIAT SVRATPVRAA KAEPETPPPV GPKRGSRVKI LRPESYWYNR AGKVVSCDQT GIKYPVTVRF EDVNYAGVST NNFGLQEVE EL

UniProtKB: PsaE

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Macromolecule #13: Photosystem I reaction center subunit III

MacromoleculeName: Photosystem I reaction center subunit III / type: protein_or_peptide / ID: 13 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 25.129158 KDa
SequenceString: MATVFCASPL QLSSKCGLKP LKAKAPAPKA VRAVRAVSCS AENTTKNVAT TVAAAALAAV VSFGAVGEAK ADIAGLTPCS ESKAFKRRE NKEVKSLQKR MAKYEEGSAP ALALQATAER TQKRFEFYGK SGLLCGNDGL PHLIADPGLA FRYGHAGDIM I PTVLFIYM ...String:
MATVFCASPL QLSSKCGLKP LKAKAPAPKA VRAVRAVSCS AENTTKNVAT TVAAAALAAV VSFGAVGEAK ADIAGLTPCS ESKAFKRRE NKEVKSLQKR MAKYEEGSAP ALALQATAER TQKRFEFYGK SGLLCGNDGL PHLIADPGLA FRYGHAGDIM I PTVLFIYM AGYTGYAGRE YLLATRGEKK PTQKEIIIDV PLALKCVAGS AGWPLRAFND LRSGSLLEKE ENITVSPR

UniProtKB: Photosystem I reaction center subunit III

+
Macromolecule #14: PsaG

MacromoleculeName: PsaG / type: protein_or_peptide / ID: 14 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 18.2266 KDa
SequenceString:
MAAATASLSS TLLAPCSSKQ PQPQQQHQHQ QLKCKSFSGL RPLKLNISSN NSSSSLSMSS ARRSMTCRAE LSPSLVISLS TGLSLFLGR FVFFNFQREN VAKQVPEQNG LTHFEAGDTR AKEYVSLLKS NDPVGFNIVD VLAWGSIGHI VAYYILATTS N GYDPSFF

+
Macromolecule #15: Photosystem I reaction center subunit VIII

MacromoleculeName: Photosystem I reaction center subunit VIII / type: protein_or_peptide / ID: 15 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 3.859615 KDa
SequenceString:
MNAAYLPSIF VPLVGLVFPA IAMASAFLYI EKSAIE

UniProtKB: Photosystem I reaction center subunit VIII

+
Macromolecule #16: Photosystem I reaction center subunit IX

MacromoleculeName: Photosystem I reaction center subunit IX / type: protein_or_peptide / ID: 16 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 4.744679 KDa
SequenceString:
MQNLKIYLST APVIAFIWLS LLSSLIIEVN RFFPDPLIFA F

UniProtKB: Photosystem I reaction center subunit IX

+
Macromolecule #17: PSI subunit V

MacromoleculeName: PSI subunit V / type: protein_or_peptide / ID: 17 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 21.338602 KDa
SequenceString: MASVAGQCVA KPLVGSVFGK LNGMTPRAPM RSRSITVVVR AADEQKQVIQ PINGDPFIGM LETPVTSAPI VAGFLSNLPA YRTGVSPLL RGVEIGLTHG FLVAGPFIKL GPLRDAAGGA AETAGCLSGA LLVIILTACL TIYGQATFED DEPQIGVKTL S GRDIARDP ...String:
MASVAGQCVA KPLVGSVFGK LNGMTPRAPM RSRSITVVVR AADEQKQVIQ PINGDPFIGM LETPVTSAPI VAGFLSNLPA YRTGVSPLL RGVEIGLTHG FLVAGPFIKL GPLRDAAGGA AETAGCLSGA LLVIILTACL TIYGQATFED DEPQIGVKTL S GRDIARDP LQSAEGWNEF TSGWLVGGLS GVAWAYLCTQ FLPFYS

UniProtKB: Photosystem I reaction center subunit XI, chloroplastic

+
Macromolecule #18: Photosystem I iron-sulfur center

MacromoleculeName: Photosystem I iron-sulfur center / type: protein_or_peptide / ID: 18 / Number of copies: 1 / Enantiomer: LEVO / EC number: photosystem I
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 8.880307 KDa
SequenceString:
MSHNVKIYDT CIGCTQCVRA CPTDVLEMVP WDGCKAKQIA SAPRTEDCVG CKRCETACPT DFLSVRVYLG AETTRSMGLA Y

UniProtKB: Photosystem I iron-sulfur center

+
Macromolecule #19: PsaK

MacromoleculeName: PsaK / type: protein_or_peptide / ID: 19 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 12.487672 KDa
SequenceString:
MTASKMSSFT GLKANTRIPS SRVVQAPVVR SRRSVKVSAD FIGSTPNLIM VASTGLCLAA GRFGLAPTVN KFATSGLNLV DKPLGLKTG DPAGFTAVDV LALGSFGHMI GIGIVLGLKA TGGL

UniProtKB: PsaK

+
Macromolecule #20: Photosystem I reaction center subunit XII

MacromoleculeName: Photosystem I reaction center subunit XII / type: protein_or_peptide / ID: 20 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 3.505114 KDa
SequenceString:
MSISESQIFI AIFLALINGF LALRLGSTLY NS

UniProtKB: Photosystem I reaction center subunit XII

+
Macromolecule #21: PsaO

MacromoleculeName: PsaO / type: protein_or_peptide / ID: 21 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 15.052442 KDa
SequenceString:
MATSMKTIRG IPSLSGRVQV SRSGLAGSRL RSGAVRRVTA MSGKGFDKNW LMASPMVNIL GFFGWVVPSS TPVPAFDGNS LTGLFFAQI PLEWAHWPTG PALDSPFWLY MVTWHLGLFT CLTLGQIGWN GRKQGYFQ

+
Macromolecule #22: PsaH

MacromoleculeName: PsaH / type: protein_or_peptide / ID: 22 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bryopsis corticulans (plant)
Molecular weightTheoretical: 14.40036 KDa
SequenceString:
MSVSAAKVST FVRGTPVRMS APKAKIQRAP ICTAPRAKYG ESDRYFDLDD LENTLGSWDM YGQEDQKRYP GLQNEFFERA GESLTRREA IRSVLFLGGG GALLAWGAKG ASDVTLPITV GPQKGGEKGP KGKI

UniProtKB: PsaH

+
Macromolecule #23: CHLOROPHYLL B

MacromoleculeName: CHLOROPHYLL B / type: ligand / ID: 23 / Number of copies: 59 / Formula: CHL
Molecular weightTheoretical: 907.472 Da
Chemical component information

ChemComp-CHL:
CHLOROPHYLL B

+
Macromolecule #24: CHLOROPHYLL A

MacromoleculeName: CHLOROPHYLL A / type: ligand / ID: 24 / Number of copies: 193 / Formula: CLA
Molecular weightTheoretical: 893.489 Da
Chemical component information

ChemComp-CLA:
CHLOROPHYLL A

+
Macromolecule #25: (6'R,11cis,11'cis,13cis,15cis)-4',5'-didehydro-5',6'-dihydro-beta...

MacromoleculeName: (6'R,11cis,11'cis,13cis,15cis)-4',5'-didehydro-5',6'-dihydro-beta,beta-carotene
type: ligand / ID: 25 / Number of copies: 38 / Formula: 8CT
Molecular weightTheoretical: 536.873 Da
Chemical component information

ChemComp-8CT:
(6'R,11cis,11'cis,13cis,15cis)-4',5'-didehydro-5',6'-dihydro-beta,beta-carotene

+
Macromolecule #26: Siphonein

MacromoleculeName: Siphonein / type: ligand / ID: 26 / Number of copies: 19 / Formula: 0UR
Molecular weightTheoretical: 781.157 Da
Chemical component information

ChemComp-0UR:
Siphonein

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Macromolecule #27: 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE

MacromoleculeName: 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE / type: ligand / ID: 27 / Number of copies: 23 / Formula: LHG
Molecular weightTheoretical: 722.97 Da
Chemical component information

ChemComp-LHG:
1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE / phospholipid*YM

+
Macromolecule #28: 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL

MacromoleculeName: 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL
type: ligand / ID: 28 / Number of copies: 1 / Formula: SQD
Molecular weightTheoretical: 795.116 Da
Chemical component information

ChemComp-SQD:
1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL

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Macromolecule #29: 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE

MacromoleculeName: 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE / type: ligand / ID: 29 / Number of copies: 10 / Formula: LMG
Molecular weightTheoretical: 787.158 Da
Chemical component information

ChemComp-LMG:
1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE

+
Macromolecule #30: Siphonaxanthin

MacromoleculeName: Siphonaxanthin / type: ligand / ID: 30 / Number of copies: 2 / Formula: 0IE
Molecular weightTheoretical: 600.87 Da
Chemical component information

ChemComp-0IE:
Siphonaxanthin

+
Macromolecule #31: PHYLLOQUINONE

MacromoleculeName: PHYLLOQUINONE / type: ligand / ID: 31 / Number of copies: 2 / Formula: PQN
Molecular weightTheoretical: 450.696 Da
Chemical component information

ChemComp-PQN:
PHYLLOQUINONE

+
Macromolecule #32: CHLOROPHYLL A ISOMER

MacromoleculeName: CHLOROPHYLL A ISOMER / type: ligand / ID: 32 / Number of copies: 1 / Formula: CL0
Molecular weightTheoretical: 893.489 Da
Chemical component information

ChemComp-CL0:
CHLOROPHYLL A ISOMER

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Macromolecule #33: IRON/SULFUR CLUSTER

MacromoleculeName: IRON/SULFUR CLUSTER / type: ligand / ID: 33 / Number of copies: 3 / Formula: SF4
Molecular weightTheoretical: 351.64 Da
Chemical component information

ChemComp-FS1:
IRON/SULFUR CLUSTER

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Macromolecule #34: DIGALACTOSYL DIACYL GLYCEROL (DGDG)

MacromoleculeName: DIGALACTOSYL DIACYL GLYCEROL (DGDG) / type: ligand / ID: 34 / Number of copies: 1 / Formula: DGD
Molecular weightTheoretical: 949.299 Da
Chemical component information

ChemComp-DGD:
DIGALACTOSYL DIACYL GLYCEROL (DGDG)

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Experimental details

-
Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE

-
Electron microscopy

MicroscopeFEI MORGAGNI
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm

+
Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.68 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: CryoSMART / Number images used: 287144
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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