Structure of a class 2 docking domain complex from modules CurK and CurL of the curacin A polyketide synthase

Experimental Data Snapshot

  • Resolution: 1.50 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 

wwPDB Validation   3D Report Full Report

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Cyanobacterial polyketide synthase docking domains: a tool for engineering natural product biosynthesis.

Whicher, J.R.Smaga, S.S.Hansen, D.A.Brown, W.C.Gerwick, W.H.Sherman, D.H.Smith, J.L.

(2013) Chem Biol 20: 1340-1351

  • DOI: https://doi.org/10.1016/j.chembiol.2013.09.015
  • Primary Citation of Related Structures:  
    4MYY, 4MYZ, 4MZ0

  • PubMed Abstract: 

    Modular type I polyketide synthases (PKSs) are versatile biosynthetic systems that initiate, successively elongate, and modify acyl chains. Intermediate transfer between modules is mediated via docking domains, which are attractive targets for PKS pathway engineering to produce natural product analogs. We identified a class 2 docking domain in cyanobacterial PKSs and determined crystal structures for two docking domain pairs, revealing a distinct class 2 docking strategy for promoting intermediate transfer. The selectivity of class 2 docking interactions, demonstrated in binding and biochemical assays, could be altered by mutagenesis. We determined the ideal fusion location for exchanging class 1 and class 2 docking domains and demonstrated effective polyketide chain transfer in heterologous modules. Thus, class 2 docking domains are tools for rational bioengineering of a broad range of PKSs containing either class 1 or 2 docking domains.

  • Organizational Affiliation

    Chemical Biology Graduate Program, University of Michigan, Ann Arbor, MI 48109, USA; Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CurK, CurL fusion protein
A, B, C
79Moorena producens 3LMutation(s): 0 
Gene Names: LYNGBM3L_74450LYNGBM3L_74440
Find proteins for F4Y424 (Moorena producens 3L)
Explore F4Y424 
Go to UniProtKB:  F4Y424
Find proteins for F4Y425 (Moorena producens 3L)
Explore F4Y425 
Go to UniProtKB:  F4Y425
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsF4Y425F4Y424
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.50 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.889α = 90
b = 59.532β = 124.87
c = 52.867γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-01-29
    Type: Initial release
  • Version 1.1: 2014-02-05
    Changes: Database references
  • Version 1.2: 2017-08-09
    Changes: Data collection, Refinement description, Source and taxonomy
  • Version 1.3: 2024-02-28
    Changes: Data collection, Database references