Biological Assembly 1  

 3D View: Structure | Ligand Interaction

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 6-mer - A2B2C2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 122542.95 
• Atom Count: 8567 
• Residue Count: 1184 
• Unique protein chains: 3

1MDA

CRYSTAL STRUCTURE OF AN ELECTRON-TRANSFER COMPLEX BETWEEN METHYLAMINE DEHYDROGENASE AND AMICYANIN

• DOI: 10.2210/pdb1MDA/pdb

• Classification: ELECTRON TRANSPORT
• Organism(s): Paracoccus denitrificans


• Deposited: 1992-03-02 Released: 1993-10-31 
• Deposition Author(s): Chen, L., Durley, R., Mathews, F.S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.5 Å

Literature

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., Hol, W.G.J.

(1992) Biochemistry 31: 4959-4964

• PubMed: 1599920 


• PubMed Abstract: 
  

The crystal structure of the complex between the quinoprotein methylamine dehydrogenase (MADH) and the type I blue copper protein amicyanin, both from Paracoccus denitrificans, has been determined at 2.5-A resolution using molecular replacement. The search model was MADH from Thiobacillus versutus. The amicyanin could be located in an averaged electron density difference map and the model improved by refinement and model building procedures. Nine beta-strands are observed within the amicyanin molecule. The copper atom is located between three antiparallel strands and is about 2.5 A below the protein surface. The major intermolecular interactions occur between amicyanin and the light subunit of MADH where the interface is largely hydrophobic. The copper atom of amicyanin and the redox cofactor of MADH are about 9.4 A apart. One of the copper ligands, His 95, lies between the two redox centers and may facilitate electron transfer between them.

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Related Citations: 

• Structure of Quinoprotein Methylamine Dehydrogenase at 2.25 Angstroms Resolution
  Vellieux, F.M.D.,Huitema, F.,Groendijk, H.,Kalk, K.H.,Frank Jzn., J.,Jongejan, J.A.,Duine, J.A.,Petratos, K.,Drenth, J.,Hol, W.G.J.
  (1989) Embo J. 8: 2171
• 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
• Structure Determination of Quinoprotein Methylamine Dehydrogenase from Thiobacillus Versutus
  Vellieux, F.M.D.,Kalk, K.H.,Drenth, J.,Hol, W.G.
  (1990) Acta Crystallogr.,Sect.B 46: 806
• A New Cofactor in a Prokaryotic Enzyme: Tryptophan Tryptophylquinone as the Redox Prosthetic Group in Methylamine Dehydrogenase
  Mcintire, W.S.,Wemmer, D.E.,Chistoserdov, A.,Lidstrom, M.E.
  (1991) Science 252: 817




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Organizational Affiliation: 

Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, Missouri 63110.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
METHYLAMINE DEHYDROGENASE (HEAVY SUBUNIT)	H, J	368	N/A	Mutation(s): 0
Protein Feature View is not available: No corresponding UniProt sequence found.

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
METHYLAMINE DEHYDROGENASE (LIGHT SUBUNIT)	L, M	121	N/A	Mutation(s): 0
Protein Feature View is not available: No corresponding UniProt sequence found.

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details
AMICYANIN	A, B	103	Paracoccus denitrificans	Mutation(s): 0  Gene Names: mauC (ami)
Find proteins for P22364 (Paracoccus denitrificans) Go to UniProtKB:  P22364

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
CU	A, B	COPPER (II) ION Cu JPVYNHNXODAKFH-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
TRQ	L, M	L-PEPTIDE LINKING	C11 H10 N2 O4		TRP

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.5 Å
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length (Å)	Angle (°)
a = 124.700	α = 90.00
b = 124.700	β = 90.00
c = 247.400	γ = 90.00

Software Package:

Software Name	Purpose
PROLSQ	refinement
TNT	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1992-03-02 
• Released Date: 1993-10-31 
• Deposition Author(s): Chen, L., Durley, R., Mathews, F.S.

Revision History 

• Version 1.0: 1993-10-31
  Type: Initial release
• Version 1.1: 2008-03-03
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance