Crystal structure of lambda repressor (1-45) fused with maltose-binding protein

Experimental Data Snapshot

  • Resolution: 2.00 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.160 

Starting Model: experimental
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Co-translational folding of alpha-helical proteins: structural studies of intermediate-length variants of the lambda repressor.

Hanazono, Y.Takeda, K.Miki, K.

(2018) FEBS Open Bio 8: 1312-1321

  • DOI: https://doi.org/10.1002/2211-5463.12480
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Nascent polypeptide chains fold cotranslationally, but the atomic-level details of this process remain unknown. Here, we report crystallographic, de novo modeling, and spectroscopic studies of intermediate-length variants of the λ repressor N-terminal domain. Although the ranges of helical regions of the half-length variant were almost identical to those of the full-length protein, the relative orientations of these helices in the intermediate-length variants differed. Our results suggest that cotranslational folding of the λ repressor initially forms a helical structure with a transient conformation, as in the case of a molten globule state. This conformation subsequently matures during the course of protein synthesis. Structural data are available in the PDB under the accession numbers http://www.rcsb.org/pdb/search/structidSearch.do?structureId=5ZCA and http://www.rcsb.org/pdb/search/structidSearch.do?structureId=3WOA.

  • Organizational Affiliation

    Department of Chemistry Graduate School of Science Kyoto University Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Repressor protein CI, Maltose-binding periplasmic protein417Lambdavirus lambdaEscherichia coli K-12
This entity is chimeric
Mutation(s): 1 
Gene Names: malEb4034JW3994
Find proteins for P0AEX9 (Escherichia coli (strain K12))
Explore P0AEX9 
Go to UniProtKB:  P0AEX9
Find proteins for P03034 (Escherichia phage lambda)
Explore P03034 
Go to UniProtKB:  P03034
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP03034P0AEX9
Sequence Annotations
  • Reference Sequence


Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
Glycosylation Resources
GlyTouCan:  G07411ON
GlyCosmos:  G07411ON
Biologically Interesting Molecules (External Reference) 1 Unique
Experimental Data & Validation

Experimental Data

  • Resolution: 2.00 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.160 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 150.865α = 90
b = 52.622β = 90
c = 58.271γ = 90
Software Package:
Software NamePurpose
HKL-2000data 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: 2015-04-29
    Type: Initial release
  • Version 1.1: 2017-08-16
    Changes: Refinement description, Source and taxonomy
  • Version 1.2: 2018-08-22
    Changes: Data collection, Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Structure summary
  • Version 2.1: 2023-11-08
    Changes: Data collection, Database references, Refinement description, Structure summary