5J7Y

Architecture of loose respirasome


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

The architecture of respiratory supercomplexes.

Letts, J.A.Fiedorczuk, K.Sazanov, L.A.

(2016) Nature 537: 644-648

  • DOI: https://doi.org/10.1038/nature19774
  • Primary Citation of Related Structures:  
    5J4Z, 5J7Y, 5J8K

  • PubMed Abstract: 

    Mitochondrial electron transport chain complexes are organized into supercomplexes responsible for carrying out cellular respiration. Here we present three architectures of mammalian (ovine) supercomplexes determined by cryo-electron microscopy. We identify two distinct arrangements of supercomplex CICIII 2 CIV (the respirasome)-a major 'tight' form and a minor 'loose' form (resolved at the resolution of 5.8 Å and 6.7 Å, respectively), which may represent different stages in supercomplex assembly or disassembly. We have also determined an architecture of supercomplex CICIII 2 at 7.8 Å resolution. All observed density can be attributed to the known 80 subunits of the individual complexes, including 132 transmembrane helices. The individual complexes form tight interactions that vary between the architectures, with complex IV subunit COX7a switching contact from complex III to complex I. The arrangement of active sites within the supercomplex may help control reactive oxygen species production. To our knowledge, these are the first complete architectures of the dominant, physiologically relevant state of the electron transport chain.


  • Organizational Affiliation

    Institute of Science and Technology Austria, Klosterneuburg 3400, Austria.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I ND3102Ovis ariesMutation(s): 0 
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I PSST/NDUFS7154Ovis ariesMutation(s): 0 
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I 30KDA/NDUFS3194Ovis ariesMutation(s): 0 
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I 49KDA/NDUFS2384Ovis ariesMutation(s): 0 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I 24KDA/NDUFV2189Ovis ariesMutation(s): 0 
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I 51KDA/NDUFV1429Ovis ariesMutation(s): 0 
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I 75KDA/NDUFS1652Ovis ariesMutation(s): 0 
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I ND1297Ovis ariesMutation(s): 0 
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I TYKY/NDUFS8171Ovis ariesMutation(s): 0 
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I ND6171Ovis ariesMutation(s): 0 
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I ND4L93Ovis ariesMutation(s): 0 
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I ND5575Ovis ariesMutation(s): 0 
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I ND4455Ovis ariesMutation(s): 0 
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Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I ND2345Ovis ariesMutation(s): 0 
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Entity ID: 15
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I 18KDA/NDUFS6104Ovis ariesMutation(s): 0 
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Entity ID: 16
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I 13KDA/NDUFS685Ovis ariesMutation(s): 0 
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Entity ID: 17
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I 15KDA/NDUFS566Ovis ariesMutation(s): 0 
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Entity ID: 18
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I MWFE/NDUFA129Ovis ariesMutation(s): 0 
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Entity ID: 19
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I B8/NDUFA2DA [auth d],
S
80Ovis ariesMutation(s): 0 
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Entity ID: 20
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I B9/NDUFA353Ovis ariesMutation(s): 0 
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Entity ID: 21
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I B13/NDUFA596Ovis ariesMutation(s): 0 
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Entity ID: 22
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I B14/NDUFA6112Ovis ariesMutation(s): 0 
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Entity ID: 23
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I PGIV/NDUFA8103Ovis ariesMutation(s): 0 
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Entity ID: 24
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I 39KDA/NDUFA9309Ovis ariesMutation(s): 0 
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Entity ID: 25
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I 42KDA/NDUFA10322Ovis ariesMutation(s): 0 
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Entity ID: 26
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I B14.7/NDUFA11119Ovis ariesMutation(s): 0 
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Entity ID: 27
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I B17.2/NDUFA12AA [auth a]111Ovis ariesMutation(s): 0 
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Entity ID: 28
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I B16.6/NDUFA13BA [auth b]92Ovis ariesMutation(s): 0 
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Entity ID: 29
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I SDAP/NDUFAB1CA [auth c]79Ovis ariesMutation(s): 0 
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Entity ID: 30
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I SDAP/NDUFAB1EA [auth e]55Ovis ariesMutation(s): 0 
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Entity ID: 31
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I SDAP/NDUFAB1FA [auth f]59Ovis ariesMutation(s): 0 
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Entity ID: 32
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I B15/NDUFB4GA [auth g]130Ovis ariesMutation(s): 0 
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Entity ID: 33
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I B18/NDUFB7HA [auth h],
UA [auth 9],
VA [auth z]
63Ovis ariesMutation(s): 0 
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Entity ID: 34
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I B22/NDUFB9IA [auth i]70Ovis ariesMutation(s): 0 
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Entity ID: 35
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I PDSW/NDUFB10JA [auth j]44Ovis ariesMutation(s): 0 
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Entity ID: 36
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I ESSS/NDUFB11KA [auth k]83Ovis ariesMutation(s): 0 
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Entity ID: 37
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I KFYI/NDUFC1LA [auth 0]36Ovis ariesMutation(s): 0 
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Entity ID: 38
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I B14.5B/NDUFC2MA [auth 1]30Ovis ariesMutation(s): 0 
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Entity ID: 39
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I UNKNOWN SUBUNIT FRAGMENT 1NA [auth 2]38Ovis ariesMutation(s): 0 
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Entity ID: 40
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I UNKNOWN SUBUNIT FRAGMENT 2OA [auth 3],
PA [auth 4]
28Ovis ariesMutation(s): 0 
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Entity ID: 41
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I UNKNOWN SUBUNIT FRAGMENT 3QA [auth 5]34Ovis ariesMutation(s): 0 
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Entity ID: 42
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I UNKNOWN SUBUNIT FRAGMENT 4RA [auth 6]21Ovis ariesMutation(s): 0 
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Entity ID: 43
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I UNKNOWN SUBUNIT FRAGMENT 5SA [auth 7]39Ovis ariesMutation(s): 0 
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Entity ID: 44
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I UNKNOWN SUBUNIT FRAGMENT 6TA [auth 8]27Ovis ariesMutation(s): 0 
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Entity ID: 45
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I UNKNOWN SUBUNIT FRAGMENT 11WA [auth y]46Ovis ariesMutation(s): 0 
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Entity ID: 46
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I UNKNOWN SUBUNIT FRAGMENT 12XA [auth x]13Ovis ariesMutation(s): 0 
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Entity ID: 47
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I UNKNOWN SUBUNIT FRAGMENT 13YA [auth w]24Ovis ariesMutation(s): 0 
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Entity ID: 48
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I UNKNOWN SUBUNIT FRAGMENT 14ZA [auth v]18Ovis ariesMutation(s): 0 
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Entity ID: 49
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I UNKNOWN SUBUNIT FRAGMENT 15AB [auth u]16Ovis ariesMutation(s): 0 
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Entity ID: 50
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX I UNKNOWN SUBUNIT FRAGMENT 16BB [auth t]12Ovis ariesMutation(s): 0 
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Entity ID: 51
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX III SUBUNIT 1 / CORE 1CB [auth AA],
NB [auth AL]
446Ovis ariesMutation(s): 0 
UniProt
Find proteins for W5Q5G6 (Ovis aries)
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Entity ID: 52
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX III SUBUNIT 2 / CORE 2DB [auth AB],
OB [auth AM]
423Ovis ariesMutation(s): 0 
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Entity ID: 53
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome bEB [auth AC],
PB [auth AN]
378Ovis ariesMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 54
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX III SUBUNIT 4 / CYTOCHROME C1FB [auth AD],
QB [auth AO]
241Ovis ariesMutation(s): 0 
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Entity ID: 55
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome b-c1 complex subunit Rieske, mitochondrialGB [auth AE],
RB [auth AP]
196Ovis ariesMutation(s): 0 
EC: 1.10.2.2
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Entity ID: 56
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX III SUBUNIT 7 / 14KDAHB [auth AF],
SB [auth AQ]
105Ovis ariesMutation(s): 0 
Membrane Entity: Yes 
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Find proteins for W5P642 (Ovis aries)
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Entity ID: 57
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX III SUBUNIT 8 / QP-CIB [auth AG],
TB [auth AR]
75Ovis ariesMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Entity ID: 58
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome b-c1 complex subunit 6JB [auth AH],
UB [auth AS]
67Ovis ariesMutation(s): 0 
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Entity ID: 59
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome b-c1 complex subunit Rieske, mitochondrialKB [auth AI],
VB [auth AT]
57Ovis ariesMutation(s): 0 
EC: 1.10.2.2
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Entity ID: 60
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX III SUBUNIT 9 / 7.2KDALB [auth AJ],
WB [auth AU]
60Ovis ariesMutation(s): 0 
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Entity ID: 61
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX III SUBUNIT 10 / 6.4KDAMB [auth AK],
XB [auth AV]
51Ovis ariesMutation(s): 0 
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Entity ID: 62
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 1YB [auth BN]514Ovis ariesMutation(s): 0 
EC: 1.9.3.1 (PDB Primary Data), 7.1.1.9 (UniProt)
Membrane Entity: Yes 
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Find proteins for O78749 (Ovis aries)
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Entity ID: 63
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 2ZB [auth BO]227Ovis ariesMutation(s): 0 
EC: 7.1.1.9
Membrane Entity: Yes 
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Entity ID: 64
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 3AC [auth BC]259Ovis ariesMutation(s): 0 
EC: 7.1.1.9
Membrane Entity: Yes 
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Entity ID: 65
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX IV COX4BC [auth BD]144Ovis ariesMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for W5PPE8 (Ovis aries)
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Entity ID: 66
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX IV COX5ACC [auth BE]105Ovis ariesMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for W5NXT8 (Ovis aries)
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Entity ID: 67
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX IV COX5BDC [auth BP]98Ovis ariesMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Entity ID: 68
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 6A, mitochondrialEC [auth BG]84Ovis ariesMutation(s): 0 
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Entity ID: 69
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX IV COX6B1FC [auth BH]79Ovis ariesMutation(s): 0 
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Entity ID: 70
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX IV COX6CGC [auth BI]73Ovis ariesMutation(s): 0 
Membrane Entity: Yes 
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Entity ID: 71
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome c oxidase subunit 7A1, mitochondrialHC [auth BJ]58Ovis ariesMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for W5P5H0 (Ovis aries)
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Entity ID: 72
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX IV COX7BIC [auth BK]49Ovis ariesMutation(s): 0 
UniProt
Find proteins for W5QE72 (Ovis aries)
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Entity ID: 73
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX IV COX7CJC [auth BL]46Ovis ariesMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for A0A6P7E5B2 (Ovis aries)
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Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 74
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEX IV COX8BKC [auth BM]43Ovis ariesMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for W5PFK9 (Ovis aries)
Explore W5PFK9 
Go to UniProtKB:  W5PFK9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupW5PFK9
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 6 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
HEA
Query on HEA

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CD [auth BN],
DD [auth BN]
HEME-A
C49 H56 Fe N4 O6
ZGGYGTCPXNDTRV-PRYGPKJJSA-L
HEM
Query on HEM

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TC [auth AC]
UC [auth AC]
VC [auth AD]
XC [auth AN]
YC [auth AN]
TC [auth AC],
UC [auth AC],
VC [auth AD],
XC [auth AN],
YC [auth AN],
ZC [auth AO]
PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
SF4
Query on SF4

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LC [auth B]
NC [auth F]
OC [auth G]
PC [auth G]
RC [auth I]
LC [auth B],
NC [auth F],
OC [auth G],
PC [auth G],
RC [auth I],
SC [auth I]
IRON/SULFUR CLUSTER
Fe4 S4
LJBDFODJNLIPKO-UHFFFAOYSA-N
FES
Query on FES

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AD [auth AP],
MC [auth E],
QC [auth G],
WC [auth AE]
FE2/S2 (INORGANIC) CLUSTER
Fe2 S2
NIXDOXVAJZFRNF-UHFFFAOYSA-N
CUA
Query on CUA

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ED [auth BO]DINUCLEAR COPPER ION
Cu2
ALKZAGKDWUSJED-UHFFFAOYSA-N
CU
Query on CU

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BD [auth BN]COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONRELION1.4
MODEL REFINEMENTPHENIX

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Medical Research Council (United Kingdom)United KingdomMC_U105674180

Revision History  (Full details and data files)

  • Version 1.0: 2016-09-21
    Type: Initial release
  • Version 1.1: 2016-10-05
    Changes: Database references
  • Version 1.2: 2017-06-28
    Changes: Structure summary
  • Version 1.3: 2017-08-02
    Changes: Data collection, Structure summary
  • Version 1.4: 2019-12-11
    Changes: Advisory, Other