1JOF

Neurospora crassa 3-carboxy-cis,cis-mucoante lactonizing enzyme


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.212 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

The structure of Neurospora crassa 3-carboxy-cis,cis-muconate lactonizing enzyme, a beta propeller cycloisomerase.

Kajander, T.Merckel, M.C.Thompson, A.Deacon, A.M.Mazur, P.Kozarich, J.W.Goldman, A.

(2002) Structure 10: 483-492

  • DOI: 10.1016/s0969-2126(02)00744-x
  • Primary Citation of Related Structures:  
    1JOF

  • PubMed Abstract: 
  • Muconate lactonizing enzymes (MLEs) convert cis,cis-muconates to muconolactones in microbes as part of the beta-ketoadipate pathway; some also dehalogenate muconate derivatives of xenobiotic haloaromatics. There are three different MLE classes unrelated by evolution ...

    Muconate lactonizing enzymes (MLEs) convert cis,cis-muconates to muconolactones in microbes as part of the beta-ketoadipate pathway; some also dehalogenate muconate derivatives of xenobiotic haloaromatics. There are three different MLE classes unrelated by evolution. We present the X-ray structure of a eukaryotic MLE, Neurospora crassa 3-carboxy-cis,cis-muconate lactonizing enzyme (NcCMLE) at 2.5 A resolution, with a seven-bladed beta propeller fold. It is related neither to bacterial MLEs nor to other beta propeller enzymes, but is structurally similar to the G protein beta subunit. It reveals a novel metal-independent cycloisomerase motif unlike the bacterial metal cofactor MLEs. Together, the bacterial MLEs and NcCMLE structures comprise a striking structural example of functional convergence in enzymes for 1,2-addition-elimination of carboxylic acids. NcCMLE and bacterial MLEs may enhance the reaction rate differently: the former by electrophilic catalysis and the latter by electrostatic stabilization of the enolate.


    Related Citations: 
    • 3-Carboxy-cis,cis-muconate lactonizing enzyme from Neurospora crassa: MAD phasing with 80 selenomethionines
      Merckel, M.C., Kajander, T., Deacon, A.M., Thompson, A., Grossmann, J.G., Kalkkinen, N., Goldman, A.
      (2002) Acta Crystallogr D Biol Crystallogr 58: 727

    Organizational Affiliation

    Institute of Biotechnology, Research Program in Structural Biology and Biophysics, University of Helsinki, FIN-00014 Helsinki, Finland.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CARBOXY-CIS,CIS-MUCONATE CYCLASEA, B, C, D, E, F, G, H365Neurospora crassaMutation(s): 10 
EC: 5.5.1.5
UniProt
Find proteins for P38677 (Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987))
Explore P38677 
Go to UniProtKB:  P38677
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PIN (Subject of Investigation/LOI)
Query on PIN

Download Ideal Coordinates CCD File 
FA [auth H], M [auth B]PIPERAZINE-N,N'-BIS(2-ETHANESULFONIC ACID)
C8 H18 N2 O6 S2
IHPYMWDTONKSCO-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
BA [auth G], EA [auth H], I [auth A], L [auth B], P [auth C], S [auth D], V [auth E], Y [auth F]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
BME
Query on BME

Download Ideal Coordinates CCD File 
AA [auth F] , CA [auth G] , DA [auth G] , GA [auth H] , HA [auth H] , J [auth A] , K [auth A] , N [auth B] , 
AA [auth F],  CA [auth G],  DA [auth G],  GA [auth H],  HA [auth H],  J [auth A],  K [auth A],  N [auth B],  O [auth B],  Q [auth C],  R [auth C],  T [auth D],  U [auth D],  W [auth E],  X [auth E],  Z [auth F]
BETA-MERCAPTOETHANOL
C2 H6 O S
DGVVWUTYPXICAM-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D, E, F, G, HL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.212 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 92.29α = 90
b = 160.6β = 90
c = 237.5γ = 90
Software Package:
Software NamePurpose
SnBphasing
CCP4model building
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
CCP4phasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-04-12
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Refinement description