1YKG

Solution structure of the flavodoxin-like domain from the Escherichia coli sulfite reductase


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 15 
  • Conformers Submitted: 15 
  • Selection Criteria: initial selection based on experimental energy target function 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution Structure of the Sulfite Reductase Flavodoxin-like Domain from Escherichia coli

Sibille, N.Blackledge, M.Brutscher, B.Coves, J.Bersch, B.

(2005) Biochemistry 44: 9086-9095

  • DOI: 10.1021/bi050437p
  • Also Cited By: 4H2D

  • PubMed Abstract: 
  • The flavoprotein moiety of Escherichia coli sulfite reductase (SiR-FP) is homologous to electron transfer proteins such as cytochrome-P450 reductase (CPR) or nitric oxide synthase (NOS). We report on the three-dimensional structure of SiR-FP18, the f ...

    The flavoprotein moiety of Escherichia coli sulfite reductase (SiR-FP) is homologous to electron transfer proteins such as cytochrome-P450 reductase (CPR) or nitric oxide synthase (NOS). We report on the three-dimensional structure of SiR-FP18, the flavodoxin-like domain of SiR-FP, which has been determined by NMR. In the holoenzyme, this domain plays an important role by shuttling electrons from the FAD to the hemoprotein (the beta-subunit). The structure presented here was determined using distance and torsion angle information in combination with residual dipolar couplings determined in two different alignment media. Several protein-FMN NOEs allowed us to place the prosthetic group in its binding pocket. The structure is well-resolved, and (15)N relaxation data indicate that SiR-FP18 is a compact domain. The binding interface with cytochrome c, a nonphysiological electron acceptor, has been determined using chemical shift mapping. Comparison of the SiR-FP18 structure with the corresponding domains from CPR and NOS shows that the fold of the protein core is highly conserved, but the analysis of the electrostatic surfaces reveals significant differences between the three domains. These observations are placed in the physiological context so they can contribute to the understanding of the electron transfer mechanism in the SiR holoenzyme.


    Related Citations: 
    • Reactivity, secondary structure, and molecular topology of the Escherichia coli sulfite reductase flavodoxin-like domain
      Champier, L.,Sibille, N.,Bersch, B.,Brutscher, B.,Blackledge, M.,Coves, J.
      (2002) Biochemistry 41: 3770
    • 1H, 13C, and 15N assignment of the flavodoxin-like domain of the Escherichia coli sulfite reductase
      Sibille, N.,Coves, J.,Marion, D.,Brutscher, B.,Bersch, B.
      (2001) J.BIOMOL.NMR 21: 71


    Organizational Affiliation

    Laboratoire de Résonance Magnétique Nucléaire, Institut de Biologie Structurale-Jean-Pierre Ebel, 41 rue Jules Horowitz, UMR 5075 CEA-CNRS-UJF, 38027 Grenoble Cedex 1, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Sulfite reductase [NADPH] flavoprotein alpha-component
A
167Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: cysJ
EC: 1.8.1.2
Find proteins for P38038 (Escherichia coli (strain K12))
Go to UniProtKB:  P38038
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FMN
Query on FMN

Download SDF File 
Download CCD File 
A
FLAVIN MONONUCLEOTIDE
RIBOFLAVIN MONOPHOSPHATE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 15 
  • Conformers Submitted: 15 
  • Selection Criteria: initial selection based on experimental energy target function 
  • Olderado: 1YKG Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-07-05
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance