5TJR

X-ray Crystal structure of a methylmalonate semialdehyde dehydrogenase from Pseudomonas sp. AAC

• PDB DOI: https://doi.org/10.2210/pdb5TJR/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Pseudomonas sp. AAC
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2016-10-05 Released: 2017-01-11 
• Deposition Author(s): Peat, T.S., Newman, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.95 Å
• R-Value Free: 0.249 
• R-Value Work: 0.212 
• R-Value Observed: 0.214 

Literature

Structural Analysis Provides Mechanistic Insight into Nicotine Oxidoreductase from Pseudomonas putida.

Tararina, M.A., Janda, K.D., Allen, K.N.

(2016) Biochemistry 55: 6595-6598

• PubMed: 27933790 
• DOI: https://doi.org/10.1021/acs.biochem.6b00963
• Primary Citation of Related Structures:  
  5TJR, 5TTJ, 5TTK


• PubMed Abstract: 
  

  The first structure of nicotine oxidoreductase (NicA2) was determined by X-ray crystallography. Pseudomonas putida has evolved nicotine-degrading activity to provide a source of carbon and nitrogen. The structure establishes NicA2 as a member of the monoamine oxidase family. Residues 1-50 are disordered and may play a role in localization. The nicotine-binding site proximal to the isoalloxazine ring of flavin shows an unusual composition of the classical aromatic cage (W427 and N462). The active site architecture is consistent with the proposed binding of the deprotonated form of the substrate and the flavin-dependent oxidation of the pyrrolidone C-N bond followed by nonenzymatic hydrolysis.

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Organizational Affiliation: 

Program in Biomolecular Pharmacology, Boston University School of Medicine , 72 East Concord Street, Boston, Massachusetts 02118, United States.

Biological Assembly 1  

Global Symmetry: Dihedral - D3  (Explore in 3D)
Global Stoichiometry: Homo 6-mer - A6 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 346.2 kDa 
• Atom Count: 20,975 
• Modelled Residue Count: 2,763 
• Deposited Residue Count: 3,186 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Methylmalonate-semialdehyde dehydrogenase	A, B, C, D, E, F	531	Pseudomonas sp. AAC	Mutation(s): 0  Gene Names: FG99_15390

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ADP	G [auth A], H [auth B], I [auth D], J [auth E], K [auth F]	ADENOSINE-5'-DIPHOSPHATE C10 H15 N5 O10 P2 XTWYTFMLZFPYCI-KQYNXXCUSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.95 Å
• R-Value Free: 0.249 
• R-Value Work: 0.212 
• R-Value Observed: 0.214 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 115.891	α = 90
b = 156.631	β = 90
c = 192.246	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2017-01-11 
Deposition Author(s): Peat, T.S., Newman, J.

Revision History  

• Version 1.0: 2017-01-11
  Type: Initial release
  
• Version 1.1: 2018-04-18
  Changes: Data collection, Database references
• Version 1.2: 2023-10-04
  Changes: Data collection, Database references, Refinement description