3G5P

Structure and activity of human mitochondrial peptide deformylase, a novel cancer target

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.162 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

Structure and activity of human mitochondrial peptide deformylase, a novel cancer target

Escobar-Alvarez, S., Goldgur, Y., Yang, G., Ouerfelli, O., Li, Y., Scheinberg, D.A.

(2009) J Mol Biol 387: 1211-1228

  • DOI: 10.1016/j.jmb.2009.02.032
  • Primary Citation of Related Structures:  
    3G5K, 3G5P

  • PubMed Abstract: 

    • Peptide deformylase proteins (PDFs) participate in the N-terminal methionine excision pathway of newly synthesized peptides. We show that the human PDF (HsPDF) can deformylate its putative substrates derived from mitochondrial DNA-encoded proteins. The first structural model of a mammalian PDF (1 ...

    Peptide deformylase proteins (PDFs) participate in the N-terminal methionine excision pathway of newly synthesized peptides. We show that the human PDF (HsPDF) can deformylate its putative substrates derived from mitochondrial DNA-encoded proteins. The first structural model of a mammalian PDF (1.7 A), HsPDF, shows a dimer with conserved topology of the catalytic residues and fold as non-mammalian PDFs. The HsPDF C-terminus topology and the presence of a helical loop (H2 and H3), however, shape a characteristic active site entrance. The structure of HsPDF bound to the peptidomimetic inhibitor actinonin (1.7 A) identified the substrate-binding site. A defined S1' pocket, but no S2' or S3' substrate-binding pockets, exists. A conservation of PDF-actinonin interaction across PDFs was observed. Despite the lack of true S2' and S3' binding pockets, confirmed through peptide binding modeling, enzyme kinetics suggest a combined contribution from P2'and P3' positions of a formylated peptide substrate to turnover.

    Organizational Affiliation: 

    Molecular Pharmacology and Chemistry Program, Sloan-Kettering Institute, 415 E. 68th Street Zuckerman Z1941, New York, NY 10065, USA.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Peptide deformylase, mitochondrialA, B, C, D183Homo sapiensMutation(s): 0 
Gene Names: PDF, PDF1A
EC: 3.5.1.88
UniProt & NIH Common Fund Data Resources
Find proteins for Q9HBH1 (Homo sapiens)
Explore Q9HBH1 
Go to UniProtKB:  Q9HBH1
GTEx:  ENSG00000258429
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.162 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 116.332α = 90
b = 77.825β = 107.93
c = 111.041γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
AMoREphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-04-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance