8C87: Reaction center protein H chain

Double mutant A(L172)C/L(L246)C structure of Photosynthetic Reaction Center From Cereibacter sphaeroides strain RV. Determined by X-ray diffraction at 2.45 Å resolution. Released 22 Nov 2023.

Method
X-ray diffraction
Resolution
2.45 Å
Organism
Cereibacter sphaeroides 2.4.1
Chains
3
Atoms
7,434
Mol. weight
104.52 kDa
Ligands
BPH, BCL, OLC, LDA
Released
22 Nov 2023

Explore 8C87 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

8C87 contains 52 α-helices and 32 β-strands across 3 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 H: 11 helices, 16 β-strands

ElementResiduesLengthSheet
α-helix12-3423
β-strand4311
β-strand4911
α-helix501
β-strand62-6652
β-strand71-7552
β-strand87-8933
β-strand98-10033
α-helix104-1074
α-helix110-1123
β-strand12314
β-strand12914
β-strand131-13335
α-helix134-1363
β-strand141-14445
β-strand152-15545
β-strand160-170115
α-helix171-1733
β-strand175-18285
β-strand188-19255
α-helix193-1953
β-strand197-19825
β-strand203-20535
α-helix210-2156
α-helix217-2193
α-helix227-24317
α-helix245-2473
Chain L: 19 helices, 7 β-strands
ElementResiduesLengthSheet
β-strand211
α-helix7-93
β-strand25-2626
β-strand29-3026
α-helix32-5625
β-strand65-6627
α-helix67-704
α-helix71-733
α-helix80-845
α-helix85-11127
α-helix116-12914
α-helix130-1345
α-helix135-1395
α-helix142-1443
α-helix146-1472
β-strand148-14927
α-helix152-16110
α-helix167-1693
α-helix171-19828
α-helix209-22012
α-helix226-24924
β-strand25118
β-strand25518
α-helix261-2633
α-helix264-2674
α-helix270-2723
Chain M: 22 helices, 9 β-strands
ElementResiduesLengthSheet
β-strand11-1335
α-helix16-172
α-helix26-283
β-strand2919
α-helix30-323
β-strand35110
α-helix39-413
β-strand46110
β-strand5119
α-helix54-7724
α-helix84-874
β-strand94111
α-helix95-973
α-helix99-1013
α-helix109-1113
α-helix113-13927
α-helix145-15814
α-helix159-1635
α-helix164-1685
α-helix171-1733
β-strand177111
α-helix179-19214
α-helix196-1983
α-helix200-22526
α-helix227-2293
α-helix234-2396
α-helix243-25614
α-helix264-28522
β-strand287112
β-strand291112
α-helix294-3007

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Reaction center protein H chainHprotein251Cereibacter sphaeroides 2.4.1Q3J170 (AlphaFold model)
Reaction center protein L chainLprotein281Cereibacter sphaeroides 2.4.1Q3J1A5 (AlphaFold model)
Reaction center protein M chainMprotein303Cereibacter sphaeroides 2.4.1Q3J1A6 (AlphaFold model)
Sequence of entity 1 (H), FASTA
>8C87_1 Reaction center protein H chain (chains H)
FDLASLAIYSFWIFLAGLIYYLQTENMREGYPLENEDGTPAANQGPFPLPKPKTFILPHG
RGTLTVPGPESEDRPIALARTAVSEGFPHAPTGDPMKDGVGPASWVARRDLPELDGHGHN
KIKPMKAAAGFHVSAGKNPIGLPVRGCDLEIAGKVVDIWVDIPEQMARFLEVELKDGSTR
LLPMQMVKVQSNRVHVNALSSDLFAGIPTIKSPTEVTLLEEDKICGYVAGGLMYAAPKRK
SVVAAMLAEYA
Sequence of entity 2 (L), FASTA
>8C87_2 Reaction center protein L chain (chains L)
ALLSFERKYRVPGGTLVGGNLFDFWVGPFYVGFFGVATFFFAALGIILIAWSAVLQGTWN
PQLISVYPPALEYGLGGAPLAKGGLWQIITICATGAFVSWALREVEICRKLGIGYHIPFA
FAFAILAYLTLVLFRPVMMGAWGYAFPYGIWTHLDWVSNTGYTYGNFHYNPCHMIAITFF
FTNALALALHGALVLSAANPEKGKEMRTPDHEDTFFRDLVGYSIGTLGIHRLGLLLSLSA
VFFSACCMIITGTIWFDQWVDWWQWWVKLPWWANIPGGING
Sequence of entity 3 (M), FASTA
>8C87_3 Reaction center protein M chain (chains M)
AEYQNIFTQVQVRGPADLGMTEDVNLANRSGVGPFSTLLGWFGNAQLGPIYLGSLGVLSL
FSGLMWFFTIGIWFWYQAGWNPAVFLRDLFFFSLEPPAPEYGLSFAAPLKEGGLWLIASF
FMFVAVWSWWGRTYLRAQALGMGKHTAWAFLSAIWLWMVLGFIRPILMGSWSEAVPYGIF
SHLDWTNNFSLVHGNLFYNPFHGLSIAFLYGSALLFAMHGATILAVSRFGGERELEQIAD
RGTAAERAALFWRWTMGFNATMEGIHRWAIWMAVLVTLTGGIGILLSGTVVDNWYVWGQN
HGM

Ligands and cofactors

IDNameFormulaCopies
BPHBacteriopheophytin aC55 H76 N4 O62
BCLBacteriochlorophyll aC55 H74 Mg N4 O64
OLC(2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoateC21 H40 O41
LDALauryl dimethylamine-N-oxideC14 H31 N O12
SPNSperoidenoneC41 H70 O21
U10Ubiquinone-10C59 H90 O41
FEFE (III) ionFe1
CDLCardiolipinC81 H156 O17 P21
HTOHeptane-1,2,3-triolC7 H16 O32

Water and common crystallization additives (EDO, UNL) are not listed.

Primary citation

Stabilization of Cereibacter sphaeroides Photosynthetic Reaction Center by the Introduction of Disulfide Bonds. Selikhanov, G., Atamas, A., Yukhimchuk, D. et al. Membranes (Basel) (2023) 13. DOI 10.3390/membranes13020154 · PubMed

Other PDB entries of the same protein (UniProt Q3J170 (AlphaFold model), which also has an AlphaFold model), best resolution first:

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