4F6C

Crystal structure of Aureusimine biosynthetic cluster reductase domain

• PDB DOI: https://doi.org/10.2210/pdb4F6C/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Staphylococcus aureus subsp. aureus Mu50
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2012-05-14 Released: 2012-12-12 
• Deposition Author(s): Mok, M., Junop, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.81 Å
• R-Value Free: 0.243 
• R-Value Work: 0.206 
• R-Value Observed: 0.208 

Literature

Heterologous expression and structural characterisation of a pyrazinone natural product assembly line.

Wyatt, M.A., Mok, M.C., Junop, M., Magarvey, N.A.

(2012) Chembiochem 13: 2408-2415

• PubMed: 23070851 
• DOI: https://doi.org/10.1002/cbic.201200340
• Primary Citation of Related Structures:  
  4F6C, 4F6L


• PubMed Abstract: 
  

  Through a number of strategies nonribosomal peptide assembly lines give rise to a metabolic diversity not possible by ribosomal synthesis. One distinction within nonribosomal assembly is that products are elaborated on an enzyme-tethered substrate, and their release is enzyme catalysed. Reductive release by NAD(P)H-dependent catalysts is one observed nonribosomal termination and release strategy. Here we probed the selectivity of a terminal reductase domain by using a full-length heterologously expressed nonribosomal peptide synthetase for the dipeptide aureusimine and were able to generate 17 new analogues. Further, we generated an X-ray structure of aureusimine terminal reductase to gain insight into the structural details associated with this enzymatic domain.

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Organizational Affiliation: 

Michael G. Degroote Institute for Infectious Disease Research, McMaster University, 1200 Main St. W, Hamilton ON, L8N 3Z5, Canada.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 99.1 kDa 
• Atom Count: 5,545 
• Modelled Residue Count: 736 
• Deposited Residue Count: 854 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
AusA reductase domain protein	A, B	427	Staphylococcus aureus subsp. aureus Mu50	Mutation(s): 0  Gene Names: SAV0179
UniProt
Find proteins for A0A0H3JX00 (Staphylococcus aureus (strain Mu50 / ATCC 700699)) Explore A0A0H3JX00  Go to UniProtKB:  A0A0H3JX00

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.81 Å
• R-Value Free: 0.243 
• R-Value Work: 0.206 
• R-Value Observed: 0.208 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 105.699	α = 90
b = 106.446	β = 90
c = 124.878	γ = 90

Software Package:

Software Name	Purpose
CBASS	data collection
PHENIX	model building
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-12-12 
Deposition Author(s): Mok, M., Junop, M.

Revision History  

• Version 1.0: 2012-12-12
  Type: Initial release