4M5P

OYE2.6 Y78W, I113C


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.170 
  • R-Value Work: 0.141 
  • R-Value Observed: 0.144 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Residues Controlling Facial Selectivity in an Alkene Reductase and Semirational Alterations to Create Stereocomplementary Variants.

Walton, A.Z.Sullivan, B.Patterson-Orazem, A.C.Stewart, J.D.

(2014) ACS Catal 4: 2307-2318

  • DOI: 10.1021/cs500429k
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • A systematic saturation mutagenesis campaign was carried out on an alkene reductase from Pichia stipitis (OYE 2.6) to develop variants with reversed stereoselectivities. Wild-type OYE 2.6 reduces three representative Baylis-Hillman adducts t ...

    A systematic saturation mutagenesis campaign was carried out on an alkene reductase from Pichia stipitis (OYE 2.6) to develop variants with reversed stereoselectivities. Wild-type OYE 2.6 reduces three representative Baylis-Hillman adducts to the corresponding S products with almost complete stereoselectivities and good catalytic efficiencies. We created and screened 13 first-generation, site-saturation mutagenesis libraries, targeting residues found near the bound substrate. One variant (Tyr78Trp) showed high R selectivity toward one of the three substrates, but no change (cyclohexenone derivative) and no catalytic activity (acrylate derivative) for the other two. Subsequent rounds of mutagenesis retained the Tyr78Trp mutation and explored other residues that impacted stereoselectivity when altered in a wild-type background. These efforts yielded double and triple mutants that possessed inverted stereoselectivities for two of the three substrates (conversions >99% and at least 91% ee ( R )). To understand the reasons underlying the stereochemical changes, we solved crystal structures of two key mutants: Tyr78Trp and Tyr78Trp/Ile113Cys, the latter with substrate partially occupying the active site. By combining these experimental data with modeling studies, we have proposed a rationale that explains the impacts of the most useful mutations.


    Organizational Affiliation

    Department of Chemistry, 126 Sisler Hall, University of Florida , Gainesville, Florida 32611 United States.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NADPH dehydrogenaseA407Scheffersomyces stipitis CBS 6054Mutation(s): 3 
Gene Names: OYE2.6PICST_44614
Find proteins for A3LT82 (Scheffersomyces stipitis (strain ATCC 58785 / CBS 6054 / NBRC 10063 / NRRL Y-11545))
Explore A3LT82 
Go to UniProtKB:  A3LT82
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FMN
Query on FMN

Download CCD File 
A
FLAVIN MONONUCLEOTIDE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N
 Ligand Interaction
23W
Query on 23W

Download CCD File 
A
methyl 2-(hydroxymethyl)prop-2-enoate
C5 H8 O3
RFUCOAQWQVDBEU-UHFFFAOYSA-N
 Ligand Interaction
MLA
Query on MLA

Download CCD File 
A
MALONIC ACID
C3 H4 O4
OFOBLEOULBTSOW-UHFFFAOYSA-N
 Ligand Interaction
NA
Query on NA

Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CSD
Query on CSD
AL-PEPTIDE LINKINGC3 H7 N O4 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.170 
  • R-Value Work: 0.141 
  • R-Value Observed: 0.144 
  • Space Group: P 63 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 126.487α = 90
b = 126.487β = 90
c = 123.307γ = 120
Software Package:
Software NamePurpose
CBASSdata collection
AMoREphasing
PHENIXrefinement
MOSFLMdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-06-25
    Type: Initial release
  • Version 1.1: 2014-09-24
    Changes: Database references
  • Version 1.2: 2015-04-29
    Changes: Non-polymer description