5BR4

E. coli lactaldehyde reductase (FucO) M185C mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.91 Å
  • R-Value Free: 0.147 
  • R-Value Work: 0.129 
  • R-Value Observed: 0.130 

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Ligand Structure Quality Assessment 


This is version 1.0 of the entry. See complete history


Literature

Mutations in adenine-binding pockets enhance catalytic properties of NAD(P)H-dependent enzymes.

Cahn, J.K.Baumschlager, A.Brinkmann-Chen, S.Arnold, F.H.

(2016) Protein Eng Des Sel 29: 31-38

  • DOI: 10.1093/protein/gzv057
  • Primary Citation of Related Structures:  
    5BR4

  • PubMed Abstract: 
  • NAD(P)H-dependent enzymes are ubiquitous in metabolism and cellular processes and are also of great interest for pharmaceutical and industrial applications. Here, we present a structure-guided enzyme engineering strategy for improving catalytic properties of NAD(P)H-dependent enzymes toward native or native-like reactions using mutations to the enzyme's adenine-binding pocket, distal to the site of catalysis ...

    NAD(P)H-dependent enzymes are ubiquitous in metabolism and cellular processes and are also of great interest for pharmaceutical and industrial applications. Here, we present a structure-guided enzyme engineering strategy for improving catalytic properties of NAD(P)H-dependent enzymes toward native or native-like reactions using mutations to the enzyme's adenine-binding pocket, distal to the site of catalysis. Screening single-site saturation mutagenesis libraries identified mutations that increased catalytic efficiency up to 10-fold in 7 out of 10 enzymes. The enzymes improved in this study represent three different cofactor-binding folds (Rossmann, DHQS-like, and FAD/NAD binding) and utilize both NADH and NADPH. Structural and biochemical analyses show that the improved activities are accompanied by minimal changes in other properties (cooperativity, thermostability, pH optimum, uncoupling), and initial tests on two enzymes (ScADH6 and EcFucO) show improved functionality in Escherichia coli.


    Organizational Affiliation

    Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E California Blvd, MC 210-41, Pasadena, CA 91125, USA frances@cheme.caltech.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Lactaldehyde reductaseA, B391Escherichia coliMutation(s): 1 
Gene Names: fucOZ4116ECs3659
EC: 1.1.1.77
UniProt
Find proteins for P0A9S1 (Escherichia coli (strain K12))
Explore P0A9S1 
Go to UniProtKB:  P0A9S1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A9S1
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.91 Å
  • R-Value Free: 0.147 
  • R-Value Work: 0.129 
  • R-Value Observed: 0.130 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.697α = 90
b = 63.769β = 111.15
c = 91.674γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
MOLREPphasing
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-12-23
    Type: Initial release