8GBT | pdb_00008gbt

Time-resolve SFX structure of a photoproduct of carbon monoxide complex of bovine cytochrome c oxidase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 
    0.269 (Depositor), 0.287 (DCC) 
  • R-Value Work: 
    0.223 (Depositor) 

Starting Model: experimental
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Literature

Detection of a Geminate Photoproduct of Bovine Cytochrome c Oxidase by Time-Resolved Serial Femtosecond Crystallography.

Ishigami, I.Carbajo, S.Zatsepin, N.Hikita, M.Conrad, C.E.Nelson, G.Coe, J.Basu, S.Grant, T.Seaberg, M.H.Sierra, R.G.Hunter, M.S.Fromme, P.Fromme, R.Rousseau, D.L.Yeh, S.R.

(2023) J Am Chem Soc 145: 22305-22309

  • DOI: https://doi.org/10.1021/jacs.3c07803
  • Primary Citation Related Structures: 
    8GBT

  • PubMed Abstract: 

    Cytochrome c oxidase (C c O) is a large membrane-bound hemeprotein that catalyzes the reduction of dioxygen to water. Unlike classical dioxygen binding hemeproteins with a heme b group in their active sites, C c O has a unique binuclear center (BNC) composed of a copper atom (Cu B ) and a heme a 3 iron, where O 2 binds and is reduced to water. CO is a versatile O 2 surrogate in ligand binding and escape reactions. Previous time-resolved spectroscopic studies of the CO complexes of bovine C c O (bC c O) revealed that photolyzing CO from the heme a 3 iron leads to a metastable intermediate (Cu B -CO), where CO is bound to Cu B , before it escapes out of the BNC. Here, with a pump-probe based time-resolved serial femtosecond X-ray crystallography, we detected a geminate photoproduct of the bC c O-CO complex, where CO is dissociated from the heme a 3 iron and moved to a temporary binding site midway between the Cu B and the heme a 3 iron, while the locations of the two metal centers and the conformation of Helix-X, housing the proximal histidine ligand of the heme a 3 iron, remain in the CO complex state. This new structure, combined with other reported structures of bC c O, allows for a clearer definition of the ligand dissociation trajectory as well as the associated protein dynamics.


  • Organizational Affiliation
    • Department of Biochemistry, Albert Einstein College of Medicine, Bronx, New York 10461, United States.

Macromolecule Content 

  • Total Structure Weight: 443.14 kDa 
  • Atom Count: 30,981 
  • Modeled Residue Count: 3,556 
  • Deposited Residue Count: 3,614 
  • Unique protein chains: 13

Macromolecules

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Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 1
A, N
514Bos taurusMutation(s): 0 
EC: 1.9.3.1 (PDB Primary Data), 7.1.1.9 (UniProt)
Membrane Entity: Yes 
UniProt
Find proteins for P00396 (Bos taurus)
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UniProt GroupP00396
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Reference Sequence
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Entity ID: 2
MoleculeChains  Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 2
B, O
227Bos taurusMutation(s): 0 
EC: 7.1.1.9
Membrane Entity: Yes 
UniProt
Find proteins for P68530 (Bos taurus)
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Reference Sequence
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Entity ID: 3
MoleculeChains  Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 3
C, P
261Bos taurusMutation(s): 0 
EC: 7.1.1.9
Membrane Entity: Yes 
UniProt
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Reference Sequence
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Entity ID: 4
MoleculeChains  Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 4 isoform 1, mitochondrial
D, Q
147Bos taurusMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Reference Sequence
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Entity ID: 5
MoleculeChains  Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 5A, mitochondrial
E, R
109Bos taurusMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Reference Sequence
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Entity ID: 6
MoleculeChains  Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 5B, mitochondrial
F, S
98Bos taurusMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Reference Sequence
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Entity ID: 7
MoleculeChains  Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 6A2, mitochondrial
G, T
85Bos taurusMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Reference Sequence
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Entity ID: 8
MoleculeChains  Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 6B1
H, U
85Bos taurusMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Reference Sequence
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Entity ID: 9
MoleculeChains  Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 6C
I, V
73Bos taurusMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Reference Sequence
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Entity ID: 10
MoleculeChains  Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 7A1, mitochondrial
J, W
59Bos taurusMutation(s): 0 
Membrane Entity: Yes 
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Reference Sequence
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Entity ID: 11
MoleculeChains  Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 7B, mitochondrial
K, X
56Bos taurusMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for P13183 (Bos taurus)
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Reference Sequence
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Entity ID: 12
MoleculeChains  Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 7C, mitochondrial
L, Y
47Bos taurusMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Reference Sequence
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Entity ID: 13
MoleculeChains  Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 8B, mitochondrial
M, Z
46Bos taurusMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for P10175 (Bos taurus)
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Reference Sequence

Small Molecules

Ligands 16 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CDL

Query on CDL



Download:Ideal Coordinates CCD File
BC [auth T],
OA [auth C],
TB [auth P],
VA [auth G]
CARDIOLIPIN
C81 H156 O17 P2
XVTUQDWPJJBEHJ-KZCWQMDCSA-L
TGL

Query on TGL



Download:Ideal Coordinates CCD File
BB [auth L]
EC [auth Y]
FA [auth A]
JB [auth N]
LB [auth N]
BB [auth L],
EC [auth Y],
FA [auth A],
JB [auth N],
LB [auth N],
YA [auth I]
TRISTEAROYLGLYCEROL
C57 H110 O6
DCXXMTOCNZCJGO-UHFFFAOYSA-N
HEA
(Subject of Investigation/LOI)

Query on HEA



Download:Ideal Coordinates CCD File
AA [auth A],
BA [auth A],
EB [auth N],
FB [auth N]
HEME-A
C49 H56 Fe N4 O6
ZGGYGTCPXNDTRV-PRYGPKJJSA-L
PEK

Query on PEK



Download:Ideal Coordinates CCD File
AC [auth T]
RB [auth P]
SA [auth G]
UA [auth G]
XA [auth G]
AC [auth T],
RB [auth P],
SA [auth G],
UA [auth G],
XA [auth G],
YB [auth T]
(1S)-2-{[(2-AMINOETHOXY)(HYDROXY)PHOSPHORYL]OXY}-1-[(STEAROYLOXY)METHYL]ETHYL (5E,8E,11E,14E)-ICOSA-5,8,11,14-TETRAENOATE
C43 H78 N O8 P
ANRKEHNWXKCXDB-BHFWLYLHSA-N
PSC
(Subject of Investigation/LOI)

Query on PSC



Download:Ideal Coordinates CCD File
QA [auth E],
WB [auth R]
(7R,17E,20E)-4-HYDROXY-N,N,N-TRIMETHYL-9-OXO-7-[(PALMITOYLOXY)METHYL]-3,5,8-TRIOXA-4-PHOSPHAHEXACOSA-17,20-DIEN-1-AMINIUM 4-OXIDE
C42 H81 N O8 P
JLPULHDHAOZNQI-AUSZDXHESA-O
PGV
(Subject of Investigation/LOI)

Query on PGV



Download:Ideal Coordinates CCD File
CB [auth M]
CC [auth U]
FC [auth Z]
GA [auth A]
KB [auth N]
CB [auth M],
CC [auth U],
FC [auth Z],
GA [auth A],
KB [auth N],
MA [auth C],
NA [auth C],
SB [auth P]
(1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE
C40 H77 O10 P
ADYWCMPUNIVOEA-GPJPVTGXSA-N
DMU
(Subject of Investigation/LOI)

Query on DMU



Download:Ideal Coordinates CCD File
DB [auth M],
TA [auth G],
VB [auth Q],
ZB [auth T]
DECYL-BETA-D-MALTOPYRANOSIDE
C22 H42 O11
WOQQAWHSKSSAGF-WXFJLFHKSA-N
CHD

Query on CHD



Download:Ideal Coordinates CCD File
AB [auth J]
JA [auth B]
KA [auth C]
MB [auth N]
PA [auth C]
AB [auth J],
JA [auth B],
KA [auth C],
MB [auth N],
PA [auth C],
QB [auth P],
UB [auth P],
WA [auth G]
CHOLIC ACID
C24 H40 O5
BHQCQFFYRZLCQQ-OELDTZBJSA-N
SAC
(Subject of Investigation/LOI)

Query on SAC



Download:Ideal Coordinates CCD File
DC [auth V],
ZA [auth I]
N-ACETYL-SERINE
C5 H9 N O4
JJIHLJJYMXLCOY-BYPYZUCNSA-N
CUA

Query on CUA



Download:Ideal Coordinates CCD File
IA [auth B],
OB [auth O]
DINUCLEAR COPPER ION
Cu2
ALKZAGKDWUSJED-UHFFFAOYSA-N
ZN

Query on ZN



Download:Ideal Coordinates CCD File
RA [auth F],
XB [auth S]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
CU

Query on CU



Download:Ideal Coordinates CCD File
CA [auth A],
GB [auth N]
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
CMO

Query on CMO



Download:Ideal Coordinates CCD File
HA [auth A],
NB [auth N]
CARBON MONOXIDE
C O
UGFAIRIUMAVXCW-UHFFFAOYSA-N
MG

Query on MG



Download:Ideal Coordinates CCD File
DA [auth A],
HB [auth N]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
NA

Query on NA



Download:Ideal Coordinates CCD File
EA [auth A],
IB [auth N]
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
OH

Query on OH



Download:Ideal Coordinates CCD File
LA [auth C],
PB [auth P]
HYDROXIDE ION
H O
XLYOFNOQVPJJNP-UHFFFAOYSA-M
Modified Residues  3 Unique
IDChains TypeFormula2D DiagramParent
FME
Query on FME
A, N
L-PEPTIDE LINKINGC6 H11 N O3 SMET
TPO
Query on TPO
G, T
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
SAC
Query on SAC
I, V
L-PEPTIDE LINKINGC5 H9 N O4SER

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free:  0.269 (Depositor), 0.287 (DCC) 
  • R-Value Work:  0.223 (Depositor) 
Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 178.3α = 90
b = 189β = 90
c = 209γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
CrystFELdata reduction
CrystFELdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

& Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United States1R01GM115773-01A1
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United States5R01GM115773-02
National Science Foundation (NSF, United States)United States1404929

Revision History  (Full details and data files)

  • Version 1.0: 2023-09-20
    Type: Initial release
  • Version 1.1: 2023-09-27
    Changes: Database references
  • Version 1.2: 2023-11-01
    Changes: Data collection, Database references