6QYC

Crystal structure of MtrC from Shewanella baltica OS185

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.29 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.185 

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Literature

The Crystal Structure of a Biological Insulated Transmembrane Molecular Wire.

Edwards, M.J., White, G.F., Butt, J.N., Richardson, D.J., Clarke, T.A.

(2020) Cell 181: 665-673.e10

  • DOI: 10.1016/j.cell.2020.03.032
  • Primary Citation of Related Structures:  
    6QYC, 6R2Q

  • PubMed Abstract: 

    • A growing number of bacteria are recognized to conduct electrons across their cell envelope, and yet molecular details of the mechanisms supporting this process remain unknown. Here, we report the atomic structure of an outer membrane spanning protein complex, MtrAB, that is representative of a protein family known to transport electrons between the interior and exterior environments of phylogenetically and metabolically diverse microorganisms ...

    A growing number of bacteria are recognized to conduct electrons across their cell envelope, and yet molecular details of the mechanisms supporting this process remain unknown. Here, we report the atomic structure of an outer membrane spanning protein complex, MtrAB, that is representative of a protein family known to transport electrons between the interior and exterior environments of phylogenetically and metabolically diverse microorganisms. The structure is revealed as a naturally insulated biomolecular wire possessing a 10-heme cytochrome, MtrA, insulated from the membrane lipidic environment by embedding within a 26 strand β-barrel formed by MtrB. MtrAB forms an intimate connection with an extracellular 10-heme cytochrome, MtrC, which presents its hemes across a large surface area for electrical contact with extracellular redox partners, including transition metals and electrodes.

    Organizational Affiliation: 

    School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, UK. Electronic address: tom.clarke@uea.ac.uk.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Decaheme c-type cytochrome, OmcA/MtrC familyA, B, C608Shewanella baltica OS185Mutation(s): 0 
Gene Names: NCTC10735_02683, mtrC, Shew185_1578
Membrane Entity: Yes 
UniProt
Find proteins for P0DSN4 (Shewanella baltica (strain OS185))
Explore P0DSN4 
Go to UniProtKB:  P0DSN4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0DSN4
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEC
Query on HEC
Download Ideal Coordinates CCD File 
AA [auth B],
D [auth A],
E [auth A],
EA [auth C],
F [auth A],
AA [auth B],
D [auth A],
E [auth A],
EA [auth C],
F [auth A],
FA [auth C],
G [auth A],
GA [auth C],
H [auth A],
HA [auth C],
I [auth A],
IA [auth C],
J [auth A],
JA [auth C],
K [auth A],
KA [auth C],
L [auth A],
LA [auth C],
M [auth A],
MA [auth C],
NA [auth C],
R [auth B],
S [auth B],
T [auth B],
U [auth B],
V [auth B],
W [auth B],
X [auth B],
Y [auth B],
Z [auth B]
HEME C
C34 H34 Fe N4 O4
HXQIYSLZKNYNMH-LJNAALQVSA-N		 Ligand Interaction
EDO
Query on EDO
Download Ideal Coordinates CCD File 
P [auth A],
Q [auth A]		1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N		 Ligand Interaction
CA
Query on CA
Download Ideal Coordinates CCD File 
BA [auth B],
CA [auth B],
DA [auth B],
N [auth A],
O [auth A],
BA [auth B],
CA [auth B],
DA [auth B],
N [auth A],
O [auth A],
OA [auth C],
PA [auth C],
QA [auth C]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.29 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.185 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.52α = 90
b = 291.5β = 90
c = 87.2γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
PDB_EXTRACTdata extraction
xia2data reduction
CRANK2phasing

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Biotechnology and Biological Sciences Research CouncilUnited KingdomP01819X
Biotechnology and Biological Sciences Research CouncilUnited KingdomL023733X

Revision History  (Full details and data files)

  • Version 1.0: 2020-04-22
    Type: Initial release
  • Version 1.1: 2020-05-13
    Changes: Database references