Biological Assembly 1  

 3D View: Structure

Global Symmetry: Dihedral - D5  (3D View)
Global Stoichiometry: Homo 10-mer - A10 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 111.76 kDa 
• Atom Count: 960 
• Residue Count: 960 
• Unique protein chains: 1

1MLI

CRYSTAL STRUCTURE OF MUCONOLACTONE ISOMERASE AT 3.3 ANGSTROMS RESOLUTION

• DOI: 10.2210/pdb1MLI/pdb

• Classification: INTRAMOLECULAR OXIDOREDUCTASE
• Organism(s): Pseudomonas putida
• Mutation(s): No 


• Deposited: 1989-11-02 Released: 1990-10-15 
• Deposition Author(s): Katti, S.K., Katz, B.A., Wyckoff, H.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å

Literature

Crystal structure of muconolactone isomerase at 3.3 A resolution.

Katti, S.K., Katz, B.A., Wyckoff, H.W.

(1989) J Mol Biol 205: 557-571

• PubMed: 2926818 
• DOI: 10.1016/0022-2836(89)90226-x
• Primary Citation of Related Structures:  
  1MLI


• PubMed Abstract: 
  

The crystal structure of muconolactone isomerase from Pseudomonas putida, a unique molecule with ten 96 amino acid subunits and 5-fold, and 2-fold symmetries, has been solved at 3.3 A resolution. The non-crystallographic symmetries were used to refine the initial single isomorphous replacement phases and produce an interpretable 10-fold averaged map. The backbone trace is complete and confirmed by the amino acid sequence fit. Each subunit is composed of a body with two alpha-helices and an antiparallel twisted beta-sheet of four strands, and an extended arm. The helices and the sheet fold to form a two-layered structure with an enclosed hydrophobic core and a partially formed putative active site pocket. The C-terminal arm of another subunit related by a local dyad symmetry extends over the core to complete this pocket. The decameric protein is almost spherical, with the helices forming the external coat. There is a large hydrophilic cavity in the center with open ends along the 5-fold axis. Molecular interactions between subunits are extensive. Each subunit contacts four neighbors and loses nearly 40% of its solvent contact area on oligomerization.

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Related Citations: 

• Low Resolution Crystal Structure of Muconolactone Isomerase. A Decamer with a 5-Fold Symmetry Axis
  Katz, B.A., Ollis, D., Wyckoff, H.W.
  (1985) J Mol Biol 184: 311

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Organizational Affiliation: 

Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06511.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MUCONOLACTONE ISOMERASE	A, B, C, D, E, F, G, H, I, J	96	Pseudomonas putida	Mutation(s): 0  Gene Names: catC EC: 5.3.3.4
Find proteins for P00948 (Pseudomonas putida) Explore P00948  Go to UniProtKB:  P00948

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 65.84	α = 90
b = 105.63	β = 90.5
c = 77.21	γ = 90

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1989-11-02 
• Released Date: 1990-10-15 
Deposition Author(s): Katti, S.K., Katz, B.A., Wyckoff, H.W.

Revision History 

• Version 1.0: 1990-10-15
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance