2FR0

The first ketoreductase of the erythromycin synthase (crystal form 1)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.81 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.235 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Structure of a Ketoreductase Determines the Organization of the beta-Carbon Processing Enzymes of Modular Polyketide Synthases

Keatinge-Clay, A.T.Stroud, R.M.

(2006) Structure 14: 737-748

  • DOI: 10.1016/j.str.2006.01.009
  • Primary Citation of Related Structures:  2FR1, 2FRO

  • PubMed Abstract: 
  • The structure of the ketoreductase (KR) from the first module of the erythromycin synthase with NADPH bound was solved to 1.79 A resolution. The 51 kDa domain has two subdomains, each similar to a short-chain dehydrogenase/reductase (SDR) monomer. On ...

    The structure of the ketoreductase (KR) from the first module of the erythromycin synthase with NADPH bound was solved to 1.79 A resolution. The 51 kDa domain has two subdomains, each similar to a short-chain dehydrogenase/reductase (SDR) monomer. One subdomain has a truncated Rossmann fold and serves a purely structural role stabilizing the other subdomain, which catalyzes the reduction of the beta-carbonyl of a polyketide and possibly the epimerization of an alpha-substituent. The structure enabled us to define the domain boundaries of KR, the dehydratase (DH), and the enoylreductase (ER). It also constrains the three-dimensional organization of these domains within a module, revealing that KR does not make dimeric contacts across the 2-fold axis of the module. The quaternary structure elucidates how substrates are shuttled between the active sites of polyketide synthases (PKSs), as well as related fatty acid synthases (FASs), and suggests how domains can be swapped to make hybrid synthases that produce novel polyketides.


    Organizational Affiliation

    Department of Biochemistry and Biophysics, University of California, San Francisco, 600 16(th) Street, San Francisco, California 94107, USA. adriankc@msg.ucsf.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Erythromycin synthase, EryAI
A
486Saccharopolyspora erythraeaGene Names: eryA
EC: 2.3.1.94
Find proteins for Q03131 (Saccharopolyspora erythraea)
Go to UniProtKB:  Q03131
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NDP
Query on NDP

Download SDF File 
Download CCD File 
A
NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H30 N7 O17 P3
ACFIXJIJDZMPPO-NNYOXOHSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.81 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.235 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 43.211α = 94.73
b = 46.332β = 90.17
c = 61.506γ = 98.89
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
DENZOdata reduction
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-04-04
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance