1FMT

METHIONYL-TRNAFMET FORMYLTRANSFERASE FROM ESCHERICHIA COLI


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of crystalline Escherichia coli methionyl-tRNA(f)Met formyltransferase: comparison with glycinamide ribonucleotide formyltransferase.

Schmitt, E.Blanquet, S.Mechulam, Y.

(1996) EMBO J. 15: 4749-4758


  • PubMed Abstract: 
  • Formylation of the methionyl moiety esterified to the 3' end of tRNA(f)Met is a key step in the targeting of initiator tRNA towards the translation start machinery in prokaryotes. Accordingly, the presence of methionyl-tRNA(f)Met formyltransferase (F ...

    Formylation of the methionyl moiety esterified to the 3' end of tRNA(f)Met is a key step in the targeting of initiator tRNA towards the translation start machinery in prokaryotes. Accordingly, the presence of methionyl-tRNA(f)Met formyltransferase (FMT), the enzyme responsible for this formylation, is necessary for the normal growth of Escherichia coli. The present work describes the structure of crystalline E.coli FMT at 2.0 A, resolution. The protein has an N-terminal domain containing a Rossmann fold. This domain closely resembles that of the glycinamide ribonucleotide formyltransferase (GARF), an enzyme which, like FMT, uses N-10 formyltetrahydrofolate as formyl donor. However, FMT can be distinguished from GARF by a flexible loop inserted within its Rossmann fold. In addition, FMT possesses a C-terminal domain with a beta-barrel reminiscent of an OB fold. This latter domain provides a positively charged side oriented towards the active site. Biochemical evidence is presented for the involvement of these two idiosyncratic regions (the flexible loop in the N-terminal domain, and the C-terminal domain) in the binding of the tRNA substrate.


    Organizational Affiliation

    Laboratoire de Biochimie, Unité de Recherche Associëe no.1970 du Centre National de la Recherche Scientifique, Palaiseau, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
METHIONYL-TRNA FMET FORMYLTRANSFERASE
A, B
314Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: fmt (yhdD)
EC: 2.1.2.9
Find proteins for P23882 (Escherichia coli (strain K12))
Go to UniProtKB:  P23882
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.214 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 151.040α = 90.00
b = 151.040β = 90.00
c = 81.800γ = 120.00
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORmodel building
CCP4data scaling
MOSFLMdata reduction
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-01-28
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance