1P3Y

MrsD from Bacillus sp. HIL-Y85/54728


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.54 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.222 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of MrsD, an FAD-binding protein of the HFCD family.

Blaesse, M.Kupke, T.Huber, R.Steinbacher, S.

(2003) Acta Crystallogr D Biol Crystallogr 59: 1414-1421

  • DOI: 10.1107/s0907444903011831
  • Primary Citation of Related Structures:  
    1P3Y

  • PubMed Abstract: 
  • MrsD from Bacillus sp. HIL-Y85/54728 is a member of the HFCD (homo-oligomeric flavin-containing Cys decarboxylases) family of flavoproteins and is involved in the biosynthesis of the lantibiotic mersacidin. It catalyses the oxidative decarboxylation of the C-terminal cysteine residue of the MrsA precursor peptide of mersacidin, yielding a (Z)-enethiol intermediate as the first step in the formation of the unusual amino acid S-[(Z)-2-aminovinyl]-methyl-D-cysteine ...

    MrsD from Bacillus sp. HIL-Y85/54728 is a member of the HFCD (homo-oligomeric flavin-containing Cys decarboxylases) family of flavoproteins and is involved in the biosynthesis of the lantibiotic mersacidin. It catalyses the oxidative decarboxylation of the C-terminal cysteine residue of the MrsA precursor peptide of mersacidin, yielding a (Z)-enethiol intermediate as the first step in the formation of the unusual amino acid S-[(Z)-2-aminovinyl]-methyl-D-cysteine. Surprisingly, MrsD was found to bind FAD, in contrast to the three other characterized members of the HFCD family, which bind FMN. To determine the molecular discriminators of FAD binding within the HFCD family, the crystal structure of MrsD was analyzed at a resolution of 2.54 A. Crystals of space group F432 contain one MrsD monomer in the asymmetric unit. However, a Patterson search with EpiD-derived models failed. Based on the consideration that the dodecameric MrsD particle of tetrahedral symmetry resembles the quaternary structure of EpiD, rotational and translational parameters were derived from the geometric consideration that the MrsD dodecamer is generated from a monomer by crystallographic symmetry around the position (1/4, 1/4, 1/4) of the unit cell. A structural comparison with the FMN-binding members of the HFCD family EpiD and AtHAL3a shows conserved sequence motifs in contact with the flavin's pyrimidine ring but divergent environments for the dimethylbenzene ring of the isoalloxazine moiety. The position of the ribityl chain differs in MrsD from that found in EpiD and AtHAL3a. However, the FMN-phosphate binding sites are also highly conserved in their exact positions. In all three cases, the flavin cofactor is bound to a structurally conserved region of the Rossmann-fold monomer, exposing its Re side for catalysis. The adenosyl phosphate of FAD is anchored in a well defined binding site and the adenosine moieties are oriented towards the interior of the hollow particle, where three of them pack against each other around the threefold axis of a trimeric facet.


    Organizational Affiliation

    Max-Planck-Institut für Biochemie, Abteilung für Strukturforschung, Am Klopferspitz 18a, D-82152 Martinsried, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MrsD proteinA [auth 1]194Bacillus sp. HIL-Y85/54728Mutation(s): 0 
Gene Names: mrsD
EC: 4.1.1
Find proteins for Q9RC23 (Bacillus sp. (strain HIL-Y85/54728))
Explore Q9RC23 
Go to UniProtKB:  Q9RC23
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD

Download Ideal Coordinates CCD File 
B [auth 1]FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.54 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.222 
  • Space Group: F 4 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 191.769α = 90
b = 191.769β = 90
c = 191.769γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MAINmodel building
CNSrefinement
MAINphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-08-05
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Source and taxonomy, Version format compliance