1HB4

ISOPENICILLIN N SYNTHASE FROM ASPERGILLUS NIDULANS (OXYGEN EXPOSED PRODUCT FROM ANAEROBIC ACOV FE COMPLEX)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.182 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Alternative Oxidation by Isopenicillin N Synthase Observed by X-Ray Diffraction.

Ogle, J.M.Clifton, I.J.Rutledge, P.J.Elkins, J.M.Burzlaff, N.I.M Adlington, R.Roach, P.L.Baldwin, J.E.

(2001) Chem.Biol. 8: 1231

  • Primary Citation of Related Structures:  1HB1, 1HB2, 1HB3

  • PubMed Abstract: 
  • Isopenicillin N synthase (IPNS) catalyses formation of bicyclic isopenicillin N, precursor to all penicillin and cephalosporin antibiotics, from the linear tripeptide delta-(L-alpha-aminoadipoyl)-L-cysteinyl-D-valine. IPNS is a non-haem iron(II)-depe ...

    Isopenicillin N synthase (IPNS) catalyses formation of bicyclic isopenicillin N, precursor to all penicillin and cephalosporin antibiotics, from the linear tripeptide delta-(L-alpha-aminoadipoyl)-L-cysteinyl-D-valine. IPNS is a non-haem iron(II)-dependent enzyme which utilises the full oxidising potential of molecular oxygen in catalysing the bicyclisation reaction. The reaction mechanism is believed to involve initial formation of the beta-lactam ring (via a thioaldehyde intermediate) to give an iron(IV)-oxo species, which then mediates closure of the 5-membered thiazolidine ring.


    Related Citations: 
    • Crystal Structure of Isopenicillin N Synthase is the First from a New Structural Family of Enzymes
      Roach, P.L.,Clifton, I.J.,Fulop, V.,Harlos, K.,Barton, G.J.,Hajdu, J.,Andersson, I.,Schofield, C.J.,Baldwin, J.E.
      (1995) Nature 375: 700
    • The Reaction Cycle of Isopenicillin N Synthase Observed by X-Ray Diffraction
      Burzlaff, N.I.,Rutledge, P.J.,Clifton, I.J.,Hensgens, C.M.H.,Pickford, M.,Adlington, R.M.,Roach, P.L.,Baldwin, J.E.
      (1999) Nature 401: 721
    • Structure of Isopenicillin N Synthase Complexed with Substrate and the Mechanism of Penicillin Formation
      Roach, P.L.,Clifton, I.J.,Hensgens, C.M.,Shibata, N.,Schofield, C.J.,Hajdu, J.,Baldwin, J.E.
      (1997) Nature 387: 827


    Organizational Affiliation

    The Dyson Perrins Laboratory, University of Oxford, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ISOPENICILLIN N SYNTHASE
A
331Emericella nidulans (strain FGSC A4 / ATCC 38163 / CBS 112.46 / NRRL 194 / M139)Gene Names: ipnA (ips)
EC: 1.21.3.1
Find proteins for P05326 (Emericella nidulans (strain FGSC A4 / ATCC 38163 / CBS 112.46 / NRRL 194 / M139))
Go to UniProtKB:  P05326
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
FE2
Query on FE2

Download SDF File 
Download CCD File 
A
FE (II) ION
Fe
CWYNVVGOOAEACU-UHFFFAOYSA-N
 Ligand Interaction
SCV
Query on SCV

Download SDF File 
Download CCD File 
A
N6-[(1S)-2-{[(1R)-1-CARBOXY-2-METHYLPROPYL]OXY}-1-(MERCAPTOCARBONYL)-2-OXOETHYL]-6-OXO-L-LYSINE
L-D-(A-AMINOADIPOYL)-L-(B-OXO)-CYSTEINE
C14 H22 N2 O8 S
INECXHJFYVKZHW-FXBDTBDDSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.182 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 46.660α = 90.00
b = 71.210β = 90.00
c = 100.170γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-11-23
    Type: Initial release
  • Version 1.1: 2011-05-07
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-07-05
    Type: Refinement description