6LU1: Photosystem I P700 chlorophyll a apoprotein A1
Cyanobacterial PSI Monomer from T. elongatus by Single Particle CRYO-EM at 3.2 A Resolution. Determined by electron microscopy at 3.2 Å resolution. Released 17 Mar 2021.
- Method
- Electron microscopy
- Resolution
- 3.2 Å
- Organisms
- Thermosynechococcus elongatus BP-1, Thermosynechococcus elongatus (strain BP-1)
- Chains
- 10
- Atoms
- 21,198
- Mol. weight
- 336.88 kDa
- Ligands
- PQN, BCR, LHG, LMG
- Released
- 17 Mar 2021
Explore 6LU1 in 3D
Show helices and sheets
RCSB PDB
PDBe
Secondary structure: helices and β-sheets
6LU1 contains 99 α-helices and 55 β-strands across 10 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.
Chain A: 42 helices, 23 β-strands
| Element | Residues | Length | Sheet |
|---|
| β-strand | 16 | 1 | 1 |
| α-helix | 26-29 | 4 | |
| α-helix | 37-40 | 4 | |
| β-strand | 44 | 1 | 2 |
| α-helix | 46-53 | 8 | |
| α-helix | 58-60 | 3 | |
| α-helix | 67-95 | 29 | |
| β-strand | 98 | 1 | 3 |
| α-helix | 100-103 | 4 | |
| β-strand | 113-114 | 2 | 3 |
| α-helix | 123-126 | 4 | |
| β-strand | 128-129 | 2 | 4 |
| β-strand | 135-136 | 2 | 4 |
| β-strand | 137-138 | 2 | 3 |
| α-helix | 139 | 1 | |
| α-helix | 143-149 | 7 | |
| α-helix | 159-178 | 20 | |
| β-strand | 185 | 1 | 1 |
| α-helix | 187-190 | 4 | |
| α-helix | 194-201 | 8 | |
| α-helix | 207-210 | 4 | |
| α-helix | 212-215 | 4 | |
| α-helix | 216-220 | 5 | |
| α-helix | 221-229 | 9 | |
| α-helix | 237-238 | 2 | |
| α-helix | 241-244 | 4 | |
| β-strand | 259 | 1 | 5 |
| β-strand | 262 | 1 | 5 |
| α-helix | 265-268 | 4 | |
| α-helix | 272-275 | 4 | |
| β-strand | 285 | 1 | 6 |
| β-strand | 292 | 1 | 6 |
| α-helix | 294-311 | 18 | |
| β-strand | 315 | 1 | 7 |
| β-strand | 323 | 1 | 7 |
| α-helix | 325-329 | 5 | |
| α-helix | 345-348 | 4 | |
| α-helix | 358-361 | 4 | |
| α-helix | 364-373 | 10 | |
| α-helix | 387-418 | 32 | |
| α-helix | 429-434 | 6 | |
| α-helix | 438-467 | 30 | |
| α-helix | 485-493 | 9 | |
| β-strand | 498 | 1 | 8 |
| β-strand | 502 | 1 | 8 |
| α-helix | 511-513 | 3 | |
| β-strand | 518-520 | 3 | 9 |
| β-strand | 523-526 | 4 | 9 |
| α-helix | 533-558 | 26 | |
| α-helix | 569-572 | 4 | |
| β-strand | 578 | 1 | 10 |
| β-strand | 587 | 1 | 10 |
| α-helix | 592-620 | 29 | |
| β-strand | 623-625 | 3 | 9 |
| β-strand | 631-633 | 3 | 9 |
| α-helix | 639-642 | 4 | |
| α-helix | 647-649 | 3 | |
| α-helix | 650-655 | 6 | |
| α-helix | 659-662 | 4 | |
| α-helix | 670-685 | 16 | |
| α-helix | 687-691 | 5 | |
| α-helix | 694-709 | 16 | |
| β-strand | 718 | 1 | 2 |
| α-helix | 719 | 1 | |
| α-helix | 724-754 | 31 | |
Chain B: 36 helices, 10 β-strands
| Element | Residues | Length | Sheet |
|---|
| α-helix | 9-12 | 4 | |
| β-strand | 16 | 1 | 11 |
| α-helix | 18-22 | 5 | |
| α-helix | 30-32 | 3 | |
| α-helix | 38-44 | 7 | |
| α-helix | 49-70 | 22 | |
| β-strand | 89 | 1 | 12 |
| β-strand | 112 | 1 | 12 |
| α-helix | 119-125 | 7 | |
| α-helix | 132-144 | 13 | |
| α-helix | 148-154 | 7 | |
| α-helix | 161-163 | 3 | |
| α-helix | 164-167 | 4 | |
| α-helix | 171-178 | 8 | |
| α-helix | 184-190 | 7 | |
| α-helix | 192-195 | 4 | |
| α-helix | 197-200 | 4 | |
| α-helix | 222-226 | 5 | |
| α-helix | 229-233 | 5 | |
| α-helix | 271-284 | 14 | |
| α-helix | 333-344 | 12 | |
| α-helix | 349-355 | 7 | |
| α-helix | 368-399 | 32 | |
| α-helix | 410-414 | 5 | |
| α-helix | 418-447 | 30 | |
| α-helix | 463-467 | 5 | |
| α-helix | 487-490 | 4 | |
| α-helix | 501-507 | 7 | |
| α-helix | 520-545 | 26 | |
| β-strand | 565 | 1 | 13 |
| β-strand | 566 | 1 | 14 |
| β-strand | 568 | 1 | 14 |
| β-strand | 574 | 1 | 13 |
| α-helix | 579-582 | 4 | |
| α-helix | 587-607 | 21 | |
| α-helix | 613-618 | 6 | |
| α-helix | 622-625 | 4 | |
| α-helix | 626-631 | 6 | |
| α-helix | 632-633 | 2 | |
| β-strand | 641 | 1 | 15 |
| β-strand | 646 | 1 | 15 |
| α-helix | 650-671 | 22 | |
| α-helix | 674-689 | 16 | |
| β-strand | 702 | 1 | 11 |
| α-helix | 703 | 1 | |
| α-helix | 708-736 | 29 | |
Chain C: 3 helices, 4 β-strands
| Element | Residues | Length | Sheet |
|---|
| β-strand | 3-7 | 5 | 16 |
| β-strand | 26-29 | 4 | 17 |
| β-strand | 37-40 | 4 | 17 |
| α-helix | 44-46 | 3 | |
| α-helix | 52-55 | 4 | |
| β-strand | 64-67 | 4 | 16 |
| α-helix | 73-76 | 4 | |
Chain D: 4 helices, 10 β-strands
| Element | Residues | Length | Sheet |
|---|
| β-strand | 6 | 1 | 18 |
| β-strand | 9 | 1 | 19 |
| β-strand | 17 | 1 | 20 |
| β-strand | 26-32 | 7 | 18 |
| β-strand | 37-41 | 5 | 19 |
| β-strand | 45-49 | 5 | 19 |
| β-strand | 53-58 | 6 | 18 |
| α-helix | 61-67 | 7 | |
| α-helix | 68-72 | 5 | |
| β-strand | 81-86 | 6 | 18 |
| β-strand | 90-91 | 2 | 18 |
| β-strand | 114-115 | 2 | 16 |
| α-helix | 119-121 | 3 | |
| α-helix | 122-124 | 3 | |
Chain E: 0 helices, 5 β-strands
| Element | Residues | Length | Sheet |
|---|
| β-strand | 6-9 | 4 | 21 |
| β-strand | 20-25 | 6 | 21 |
| β-strand | 36-39 | 4 | 21 |
| β-strand | 57-60 | 4 | 21 |
| β-strand | 65-66 | 2 | 21 |
Chain F: 2 helices, 0 β-strands
| Element | Residues | Length | Sheet |
|---|
| α-helix | 66-80 | 15 | |
| α-helix | 83-86 | 4 | |
Chain I: 2 helices, 0 β-strands
| Element | Residues | Length | Sheet |
|---|
| α-helix | 11-18 | 8 | |
| α-helix | 22-34 | 13 | |
Chain J: 1 helix, 0 β-strands
| Element | Residues | Length | Sheet |
|---|
| α-helix | 28-30 | 3 | |
2 more chain groups are not listed. Open the entry in the viewer and use the sequence panel to see them.
Molecules and chains
| Molecule | Chains | Type | Length | Organism | UniProt |
|---|
| Photosystem I P700 chlorophyll a apoprotein A1 | A | protein | 755 | Thermosynechococcus elongatus BP-1 | P0A405 (AlphaFold model) |
| Photosystem I P700 chlorophyll a apoprotein A2 | B | protein | 741 | Thermosynechococcus elongatus (strain BP-1) | P0A407 (AlphaFold model) |
| Photosystem I iron-sulfur center | C | protein | 81 | Thermosynechococcus elongatus (strain BP-1) | P0A415 (AlphaFold model) |
| Photosystem I reaction center subunit II | D | protein | 139 | Thermosynechococcus elongatus (strain BP-1) | P0A420 (AlphaFold model) |
| Photosystem I reaction center subunit IV | E | protein | 76 | Thermosynechococcus elongatus (strain BP-1) | P0A423 |
| Photosystem I reaction center subunit III | F | protein | 164 | Thermosynechococcus elongatus BP-1 | P0A401 |
| Photosystem I reaction center subunit VIII | I | protein | 38 | Thermosynechococcus elongatus BP-1 | P0A427 |
| Photosystem I reaction center subunit IX | J | protein | 41 | Thermosynechococcus elongatus BP-1 | P0A429 |
| Photosystem I reaction center subunit XI | L | protein | 155 | Thermosynechococcus elongatus (strain BP-1) | Q8DGB4 |
| Photosystem I reaction center subunit XII | M | protein | 31 | Thermosynechococcus elongatus (strain BP-1) | P0A403 |
Sequence of entity 1 (A), FASTA
>6LU1_1 Photosystem I P700 chlorophyll a apoprotein A1 (chains A)
MTISPPEREPKVRVVVDNDPVPTSFEKWAKPGHFDRTLARGPQTTTWIWNLHALAHDFDT
HTSDLEDISRKIFSAHFGHLAVVFIWLSGMYFHGAKFSNYEAWLADPTGIKPSAQVVWPI
VGQGILNGDVGGGFHGIQITSGLFQLWRASGITNEFQLYCTAIGGLVMAGLMLFAGWFHY
HKRAPKLEWFQNVESMLNHHLAGLLGLGSLAWAGHQIHVSLPINKLLDAGVAAKDIPLPH
EFILNPSLMAELYPKVDWGFFSGVIPFFTFNWAAYSDFLTFNGGLNPVTGGLWLSDTAHH
HLAIAVLFIIAGHMYRTNWGIGHSLKEILEAHKGPFTGAGHKGLYEVLTTSWHAQLAINL
AMMGSLSIIVAQHMYAMPPYPYLATDYPTQLSLFTHHMWIGGFLVVGGAAHGAIFMVRDY
DPAMNQNNVLDRVLRHRDAIISHLNWVCIFLGFHSFGLYVHNDTMRAFGRPQDMFSDTGI
QLQPVFAQWVQNLHTLAPGGTAPNAAATASVAFGGDVVAVGGKVAMMPIVLGTADFMVHH
IHAFTIHVTVLILLKGVLFARSSRLIPDKANLGFRFPCDGPGRGGTCQVSGWDHVFLGLF
WMYNCISVVIFHFSWKMQSDVWGTVAPDGTVSHITGGNFAQSAITINGWLRDFLWAQASQ
VIGSYGSALSAYGLLFLGAHFIWAFSLMFLFSGRGYWQELIESIVWAHNKLKVAPAIQPR
ALSIIQGRAVGVAHYLLGGIATTWAFFLARIISVG
Sequence of entity 2 (B), FASTA
>6LU1_2 Photosystem I P700 chlorophyll a apoprotein A2 (chains B)
MATKFPKFSQDLAQDPTTRRIWYAIAMAHDFESHDGMTEENLYQKIFASHFGHLAIIFLW
VSGSLFHVAWQGNFEQWVQDPVNTRPIAHAIWDPQFGKAAVDAFTQAGASNPVDIAYSGV
YHWWYTIGMRTNGDLYQGAIFLLILASLALFAGWLHLQPKFRPSLSWFKNAESRLNHHLA
GLFGVSSLAWAGHLIHVAIPESRGQHVGWDNFLSTMPHPAGLAPFFTGNWGVYAQNPDTA
SHVFGTAQGAGTAILTFLGGFHPQTESLWLTDMAHHHLAIAVLFIVAGHMYRTQFGIGHS
IKEMMDAKDFFGTKVEGPFNMPHQGIYETYNNSLHFQLGWHLACLGVITSLVAQHMYSLP
PYAFIAQDHTTMAALYTHHQYIAGFLMVGAFAHGAIFLVRDYDPAQNKGNVLDRVLQHKE
AIISHLSWVSLFLGFHTLGLYVHNDVVVAFGTPEKQILIEPVFAQFIQAAHGKLLYGFDT
LLSNPDSIASTAWPNYGNVWLPGWLDAINSGTNSLFLTIGPGDFLVHHAIALGLHTTTLI
LVKGALDARGSKLMPDKKDFGYAFPCDGPGRGGTCDISAWDAFYLAMFWMLNTIGWVTFY
WHWKHLGVWEGNVAQFNESSTYLMGWLRDYLWLNSSQLINGYNPFGTNNLSVWAWMFLFG
HLVWATGFMFLISWRGYWQELIETLVWAHERTPLANLVRWKDKPVALSIVQARLVGLAHF
SVGYILTYAAFLIASTAAKFG
Sequence of entity 3 (C), FASTA
>6LU1_3 Photosystem I iron-sulfur center (chains C)
MAHTVKIYDTCIGCTQCVRACPTDVLEMVPWDGCKAGQIASSPRTEDCVGCKRCETACPT
DFLSIRVYLGAETTRSMGLAY
Sequence of entity 4 (D), FASTA
>6LU1_4 Photosystem I reaction center subunit II (chains D)
MTTLTGQPPLYGGSTGGLLSAADTEEKYAITWTSPKEQVFEMPTAGAAVMREGENLVYFA
RKEQCLALAAQQLRPRKINDYKIYRIFPDGETVLIHPKDGVFPEKVNKGREAVNSVPRSI
GQNPNPSQLKFTGKKPYDP
Sequence of entity 5 (E), FASTA
>6LU1_5 Photosystem I reaction center subunit IV (chains E)
MVQRGSKVKILRPESYWYNEVGTVASVDQTPGVKYPVIVRFDKVNYTGYSGSASGVNTNN
FALHEVQEVAPPKKGK
Sequence of entity 6 (F), FASTA
>6LU1_6 Photosystem I reaction center subunit III (chains F)
MRRFLALLLVLTLWLGFTPLASADVAGLVPCKDSPAFQKRAAAAVNTTADPASGQKRFER
YSQALCGEDGLPHLVVDGRLSRAGDFLIPSVLFLYIAGWIGWVGRAYLIAVRNSGEANEK
EIIIDVPLAIKCMLTGFAWPLAALKELASGELTAKDNEITVSPR
Sequence of entity 7 (I), FASTA
>6LU1_7 Photosystem I reaction center subunit VIII (chains I)
MMGSYAASFLPWIFIPVVCWLMPTVVMGLLFLYIEGEA
Sequence of entity 8 (J), FASTA
>6LU1_8 Photosystem I reaction center subunit IX (chains J)
MKHFLTYLSTAPVLAAIWMTITAGILIEFNRFYPDLLFHPL
Sequence of entity 9 (L), FASTA
>6LU1_9 Photosystem I reaction center subunit XI (chains L)
MAEELVKPYNGDPFVGHLSTPISDSGLVKTFIGNLPAYRQGLSPILRGLEVGMAHGYFLI
GPWVKLGPLRDSDVANLGGLISGIALILVATACLAAYGLVSFQKGGSSSDPLKTSEGWSQ
FTAGFFVGAMGSAFVAFFLLENFSVVDGIMTGLFN
Sequence of entity 10 (M), FASTA
>6LU1_10 Photosystem I reaction center subunit XII (chains M)
MALTDTQVYVALVIALLPAVLAFRLSTELYK
Ligands and cofactors
| ID | Name | Formula | Copies |
|---|
| PQN | Phylloquinone | C31 H46 O2 | 2 |
| BCR | Beta-carotene | C40 H56 | 26 |
| LHG | 1,2-dipalmitoyl-phosphatidyl-glycerole | C38 H75 O10 P | 2 |
| LMG | 1,2-distearoyl-monogalactosyl-diglyceride | C45 H86 O10 | 1 |
| SF4 | Iron/sulfur cluster | Fe4 S4 | 3 |
| CLA | Chlorophyll a | C55 H72 Mg N4 O5 | 82 |
Primary citation
Cryo-EM structure of a functional monomeric Photosystem I from Thermosynechococcus elongatus reveals red chlorophyll cluster. Coruh, O., Frank, A., Tanaka, H. et al. Commun Biol (2021) 4:304-304. DOI 10.1038/s42003-021-01808-9 · PubMed
Other PDB entries of the same protein (UniProt P0A405 (AlphaFold model), which also has an AlphaFold model), best resolution first:
- 9QFP 1.74 Å, Monomeric Photosystem I Cryo-EM structure at 1.8 A resolution
- 7FIX 1.97 Å, Cryo-EM structure of cyanobacterial photosystem I in the presence of ferredoxin and…
- 1JB0 2.5 Å, Crystal Structure of Photosystem I: a Photosynthetic Reaction Center and Core Antenna…
- 7M75 2.75 Å, Room Temperature XFEL Crystallography reveals asymmetry in the vicinity of the two…
- 6TRA 2.85 Å, Cryo- EM structure of the Thermosynechococcus elongatus photosystem I in the presence of…
- 6PFY 2.9 Å, Membrane Protein Megahertz Crystallography at the European XFEL, Photosystem I at…
- 6PGK 2.9 Å, Membrane Protein Megahertz Crystallography at the European XFEL, Photosystem I XFEL at…
- 6TRC 2.98 Å, Cryo- EM structure of the Thermosynechococcus elongatus photosystem I in the presence of…
- 7M76 3.0 Å, Room Temperature XFEL Crystallography reveals asymmetry in the vicinity of the two…
- 7M78 3.0 Å, Room Temperature XFEL Crystallography reveals asymmetry in the vicinity of the two…
- 6TRD 3.16 Å, Cryo- EM structure of the Thermosynechococcus elongatus photosystem I in the presence of…
- 10EG 3.4 Å, Thermosynechococcus vestitus (BP-1) Photosystem I Complexed with Platinum Nanoparticles
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