8WM6 image
Deposition Date 2023-10-03
Release Date 2024-05-29
Last Version Date 2024-11-13
Entry Detail
PDB ID:
8WM6
Keywords:
PHOTOSYNTHESIS
Title:
The structure of PSI-CAC(L-14)of R.salina at 2.7 angstroms resolution
Biological Source:
Source Organism:
Rhodomonas salina (Taxon ID: 52970)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
2.70 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
8WM6 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I P700 chlorophyll a apoprotein A1
Gene (Uniprot):psaA
Chain IDs:A
Chain Length:216
Number of Molecules:1
Biological Source:Rhodomonas salina
UniProt ID:A6MVZ7 Pfam ID:PF00223
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I P700 chlorophyll a apoprotein A2
Gene (Uniprot):psaB
Chain IDs:B
Chain Length:734
Number of Molecules:1
Biological Source:Rhodomonas salina
UniProt ID:A6MVZ6 Pfam ID:PF00223
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I iron-sulfur center
Gene (Uniprot):psaC
Chain IDs:C
Chain Length:216
Number of Molecules:1
Biological Source:Rhodomonas salina
UniProt ID:A6MVS8 Pfam ID:PF12838
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit II
Gene (Uniprot):psaD
Chain IDs:D
Chain Length:213
Number of Molecules:1
Biological Source:Rhodomonas salina
UniProt ID:A6MVZ1 Pfam ID:PF02531
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit IV
Gene (Uniprot):psaE
Chain IDs:E
Chain Length:64
Number of Molecules:1
Biological Source:Rhodomonas salina
UniProt ID:A6MW36 Pfam ID:PF02427
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit III
Gene (Uniprot):psaF
Chain IDs:F
Chain Length:188
Number of Molecules:1
Biological Source:Rhodomonas salina
UniProt ID:A6MVU7 Pfam ID:PF02507
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit VIII
Gene (Uniprot):psaI
Chain IDs:G (auth: I)
Chain Length:218
Number of Molecules:1
Biological Source:Rhodomonas salina
UniProt ID:A6MVV1 Pfam ID:PF00796
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit IX
Gene (Uniprot):psaJ
Chain IDs:H (auth: J)
Chain Length:212
Number of Molecules:1
Biological Source:Rhodomonas salina
UniProt ID:A6MVU6 Pfam ID:PF01701
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit PsaK
Gene (Uniprot):psaK
Chain IDs:L (auth: K)
Chain Length:87
Number of Molecules:1
Biological Source:Rhodomonas salina
UniProt ID:A6MVS9 Pfam ID:PF01241
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit XI
Gene (Uniprot):psaL
Chain IDs:I (auth: L)
Chain Length:153
Number of Molecules:1
Biological Source:Rhodomonas salina
UniProt ID:A6MVV8 Pfam ID:PF02605
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit XII
Gene (Uniprot):psaM
Chain IDs:J (auth: M)
Chain Length:212
Number of Molecules:1
Biological Source:Rhodomonas salina
UniProt ID:A6MVT4 Pfam ID:PF07465
Polymer Type:polypeptide(L)
Molecule:PsaO
Chain IDs:K (auth: O)
Chain Length:146
Number of Molecules:1
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:PsaQ
Chain IDs:CA (auth: Q)
Chain Length:234
Number of Molecules:1
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:PsaR
Chain IDs:AA (auth: R)
Chain Length:129
Number of Molecules:1
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:cac-a
Chain IDs:O (auth: a)
Chain Length:216
Number of Molecules:1
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:cac-b
Chain IDs:P (auth: b)
Chain Length:734
Number of Molecules:1
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:cac-c
Chain IDs:N (auth: c)
Chain Length:216
Number of Molecules:1
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:cac-d
Chain IDs:Y (auth: d)
Chain Length:213
Number of Molecules:1
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:cac-e
Chain IDs:S (auth: e)
Chain Length:64
Number of Molecules:1
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:cac-g
Chain IDs:Z (auth: g)
Chain Length:255
Number of Molecules:1
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:cac-h
Chain IDs:Q (auth: h)
Chain Length:225
Number of Molecules:1
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:cac-i
Chain IDs:W (auth: i)
Chain Length:218
Number of Molecules:1
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:cac-k
Chain IDs:U (auth: k)
Chain Length:87
Number of Molecules:1
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:cac-l
Chain IDs:T (auth: l)
Chain Length:153
Number of Molecules:1
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:cac-f
Chain IDs:R (auth: m), V (auth: f), X (auth: j)
Chain Length:188
Number of Molecules:3
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:cac-n
Chain IDs:BA (auth: n)
Chain Length:219
Number of Molecules:1
Biological Source:Rhodomonas salina
Polymer Type:polypeptide(L)
Molecule:chain s
Chain IDs:M (auth: s)
Chain Length:269
Number of Molecules:1
Biological Source:Rhodomonas salina
Ligand Molecules
CLA
DGD
IHT
II0
KC2
LHG
LMG
LMT
LMU
PQN
SF4
WVN
Primary Citation
Growth phase-dependent reorganization of cryptophyte photosystem I antennae.
Commun Biol 7 560 560 (2024)
PMID: 38734819 DOI: 10.1038/s42003-024-06268-5

Abstact

Photosynthetic cryptophytes are eukaryotic algae that utilize membrane-embedded chlorophyll a/c binding proteins (CACs) and lumen-localized phycobiliproteins (PBPs) as their light-harvesting antennae. Cryptophytes go through logarithmic and stationary growth phases, and may adjust their light-harvesting capability according to their particular growth state. How cryptophytes change the type/arrangement of the photosynthetic antenna proteins to regulate their light-harvesting remains unknown. Here we solve four structures of cryptophyte photosystem I (PSI) bound with CACs that show the rearrangement of CACs at different growth phases. We identify a cryptophyte-unique protein, PsaQ, which harbors two chlorophyll molecules. PsaQ specifically binds to the lumenal region of PSI during logarithmic growth phase and may assist the association of PBPs with photosystems and energy transfer from PBPs to photosystems.

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Disease

Primary Citation of related structures
8WM6