3NEV

Crystal structure of YagE, a prophage protein from E. coli K12 in complex with KDGal


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.199 

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Literature

Identification of biochemical and putative biological role of a xenolog from Escherichia coli using structural analysis.

Bhaskar, V.Kumar, M.Manicka, S.Tripathi, S.Venkatraman, A.Krishnaswamy, S.

(2011) Proteins 79: 1132-1142

  • DOI: 10.1002/prot.22949
  • Primary Citation of Related Structures:  
    3N2X, 3NEV

  • PubMed Abstract: 
  • YagE is a 33 kDa prophage protein encoded by CP4-6 prophage element in Escherichia coli K12 genome. Here, we report the structures of YagE complexes with pyruvate (PDB Id 3N2X) and KDGal (2-keto-3-deoxy galactonate) (PDB Id 3NEV) at 2.2A resolution. Pyruvate depletion assay in presence of glyceraldehyde shows that YagE catalyses the aldol condensation of pyruvate and glyceraldehyde ...

    YagE is a 33 kDa prophage protein encoded by CP4-6 prophage element in Escherichia coli K12 genome. Here, we report the structures of YagE complexes with pyruvate (PDB Id 3N2X) and KDGal (2-keto-3-deoxy galactonate) (PDB Id 3NEV) at 2.2A resolution. Pyruvate depletion assay in presence of glyceraldehyde shows that YagE catalyses the aldol condensation of pyruvate and glyceraldehyde. Our results indicate that the biochemical function of YagE is that of a 2-keto-3-deoxy gluconate (KDG) aldolase. Interestingly, E. coli K12 genome lacks an intrinsic KDG aldolase. Moreover, the over-expression of YagE increases cell viability in the presence of certain bactericidal antibiotics, indicating a putative biological role of YagE as a prophage encoded virulence factor enabling the survival of bacteria in the presence of certain antibiotics. The analysis implies a possible mechanism of antibiotic resistance conferred by the over-expression of prophage encoded YagE to E. coli.


    Organizational Affiliation

    Department of Genetic Engineering, School of Biotechnology, Madurai Kamaraj University, Madurai 625021, India.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Uncharacterized protein yagEA, B, C, D298Escherichia coli K-12Mutation(s): 0 
Gene Names: b0268JW0261yagE
EC: 4.1.2.51 (UniProt), 4.1.2.28 (UniProt)
UniProt
Find proteins for P75682 (Escherichia coli (strain K12))
Explore P75682 
Go to UniProtKB:  P75682
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.199 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 141.86α = 90
b = 155.13β = 90
c = 55.71γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-04-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance