2MTA

CRYSTAL STRUCTURE OF A TERNARY ELECTRON TRANSFER COMPLEX BETWEEN METHYLAMINE DEHYDROGENASE, AMICYANIN AND A C-TYPE CYTOCHROME


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Work: 0.179 
  • R-Value Observed: 0.179 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Structure of an electron transfer complex: methylamine dehydrogenase, amicyanin, and cytochrome c551i.

Chen, L.Durley, R.C.Mathews, F.S.Davidson, V.L.

(1994) Science 264: 86-90

  • DOI: 10.1126/science.8140419
  • Primary Citation of Related Structures:  
    2MTA

  • PubMed Abstract: 
  • The crystal structure of a ternary protein complex has been determined at 2.4 angstrom resolution. The complex is composed of three electron transfer proteins from Paracoccus denitrificans, the quinoprotein methylamine dehydrogenase, the blue copper protein amicyanin, and the cytochrome c551i ...

    The crystal structure of a ternary protein complex has been determined at 2.4 angstrom resolution. The complex is composed of three electron transfer proteins from Paracoccus denitrificans, the quinoprotein methylamine dehydrogenase, the blue copper protein amicyanin, and the cytochrome c551i. The central region of the c551i is folded similarly to several small bacterial c-type cytochromes; there is a 45-residue extension at the amino terminus and a 25-residue extension at the carboxyl terminus. The methylamine dehydrogenase-amicyanin interface is largely hydrophobic, whereas the amicyanin-cytochrome interface is more polar, with several charged groups present on each surface. Analysis of the simplest electron transfer pathways between the redox partners points out the importance of other factors such as energetics in determining the electron transfer rates.


    Related Citations: 
    • Crystal Structure Analysis of Amicyanin and Apoamicyanin from Paraccus Denitrificans at 2.0 Angstroms and 1.8 Angstroms Resolution
      Durley, R., Chen, L., Lim, L.W., Mathews, F.S., Davidson, V.L.
      (1993) Protein Sci 2: 739
    • Preliminary Crystal Structure Studies of a Ternary Electron Transfer Complex between a Quinoprotein, a Blue Copper Protein, and a C-Type Cytochrome
      Chen, L., Mathews, F.S., Davidson, V.L., Tegoni, M., Rivetti, C., Rossi, G.L.
      (1993) Protein Sci 2: 147
    • Crystal Structure of an Electron-Transfer Complex between Methylamine Dehydrogenase and Amicyanin
      Chen, L., Durley, R., Poliks, B.J., Hamada, K., Chen, Z., Mathews, F.S., Davidson, V.L., Satow, Y., Huizinga, E., Vellieux, F.M.D., Hol, W.G.J.
      (1992) Biochemistry 31: 4959
    • Three-Dimensional Structure of the Quinoprotein Methylamine Dehydrogenase from Paracoccus Denitrificans Determined by Molecular Replacement at 2.8 Angstroms Resolution
      Chen, L., Mathews, F.S., Davidson, V.L., Huizinga, E.G., Vellieux, F.M.D., Hol, W.G.J.
      (1992) Proteins 14: 288

    Organizational Affiliation

    Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
METHYLAMINE DEHYDROGENASE (HEAVY SUBUNIT) H373Paracoccus denitrificansMutation(s): 0 
Gene Names: mauB
EC: 1.4.99.3 (PDB Primary Data), 1.4.9.1 (UniProt)
Find proteins for P29894 (Paracoccus denitrificans)
Explore P29894 
Go to UniProtKB:  P29894
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
METHYLAMINE DEHYDROGENASE (LIGHT SUBUNIT) L125Paracoccus denitrificansMutation(s): 0 
Gene Names: mauA
EC: 1.4.99.3 (PDB Primary Data), 1.4.9.1 (UniProt)
Find proteins for P22619 (Paracoccus denitrificans)
Explore P22619 
Go to UniProtKB:  P22619
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
AMICYANIN A105Paracoccus denitrificansMutation(s): 0 
Gene Names: mauCami
Find proteins for P22364 (Paracoccus denitrificans)
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Go to UniProtKB:  P22364
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
CYTOCHROME C551I C147Paracoccus denitrificansMutation(s): 0 
Gene Names: moxG
Find proteins for P29899 (Paracoccus denitrificans)
Explore P29899 
Go to UniProtKB:  P29899
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 
C
HEME C
C34 H34 Fe N4 O4
HXQIYSLZKNYNMH-LJNAALQVSA-N
 Ligand Interaction
PO4
Query on PO4

Download Ideal Coordinates CCD File 
H
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
CU
Query on CU

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A
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TRQ
Query on TRQ
LL-PEPTIDE LINKINGC11 H10 N2 O4TRP
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Work: 0.179 
  • R-Value Observed: 0.179 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 148.81α = 90
b = 68.85β = 90
c = 187.18γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2021-03-10
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Other, Structure summary