1HZE

SOLUTION STRUCTURE OF THE N-TERMINAL DOMAIN OF RIBOFLAVIN SYNTHASE FROM E. COLI


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The solution structure of the N-terminal domain of riboflavin synthase.

Truffault, V.Coles, M.Diercks, T.Abelmann, K.Eberhardt, S.Luttgen, H.Bacher, A.Kessler, H.

(2001) J.Mol.Biol. 309: 949-960

  • DOI: 10.1006/jmbi.2001.4683
  • Primary Citation of Related Structures:  1I18

  • PubMed Abstract: 
  • The structure of the amino-terminal domain of Escherichia coli riboflavin synthase (RiSy) has been determined by NMR spectroscopy with riboflavin as a bound ligand. RiSy is functional as a 75 kDa homotrimer, each subunit of which consists of two doma ...

    The structure of the amino-terminal domain of Escherichia coli riboflavin synthase (RiSy) has been determined by NMR spectroscopy with riboflavin as a bound ligand. RiSy is functional as a 75 kDa homotrimer, each subunit of which consists of two domains which share very similar sequences and structures. The N-terminal domain (RiSy-N; 97 residues) forms a 20 kDa homodimer in solution which binds riboflavin with high affinity. The structure features a six-stranded antiparallel beta-barrel with a Greek-key fold, both ends of which are closed by an alpha-helix. One riboflavin molecule is bound per monomer in a site at one end of the barrel which is comprised of elements of both monomers. The structure and ligand binding are similar to that of the FAD binding domains of ferrodoxin reductase family proteins. The structure provides insights into the structure of the whole enzyme, the organisation of the functional trimer and the mechanism of riboflavin synthesis. C48 from the N-terminal domain is identified as the free cysteine implicated in a nucleophilic role in the synthesis mechanism, while H102 from the C-terminal domains is also likely to play a key role. Both are invariant in all known riboflavin synthase sequences.


    Organizational Affiliation

    Institut für Organische Chemie und Biochemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RIBOFLAVIN SYNTHASE ALPHA CHAIN
A, B
97Escherichia coli (strain K12)Gene Names: ribC (ribE)
EC: 2.5.1.9
Find proteins for P0AFU8 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AFU8
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
RBF
Query on RBF

Download SDF File 
Download CCD File 
A, B
RIBOFLAVIN
RIBOFLAVINE; VITAMIN B2
C17 H20 N4 O6
AUNGANRZJHBGPY-SCRDCRAPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-09-05
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance