1HXG | pdb_00001hxg

CRYSTAL STRUCTURE OF TEAS W273S/C440W

• PDB DOI: https://doi.org/10.2210/pdb1HXG/pdb

• Classification: LYASE
• Organism(s): Nicotiana tabacum
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2001-01-12 Released: 2003-06-24 
• Deposition Author(s): Starks, C.S., Rising, K.A., Chappell, J., Noel, J.P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 
  0.244 (Depositor), 0.240 (DCC) 
• R-Value Work: 
  0.217 (Depositor), 0.210 (DCC) 
• R-Value Observed: 
  0.217 (Depositor) 

Starting Model: experimental

Literature

Single Active Site Mutations Change the Specificity of a Sesquiterpene Cyclase

Starks, C.S., Rising, K.A., Chappell, J., Noel, J.P.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 63.05 kDa 
• Atom Count: 4,334 
• Modeled Residue Count: 534 
• Deposited Residue Count: 548 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
5-EPI-ARISTOLOCHENE SYNTHASE	A	548	Nicotiana tabacum	Mutation(s): 2  EC: 4.1.99.7 (PDB Primary Data), 4.2.3.61 (UniProt), 4.2.3.226 (UniProt), 4.2.3.227 (UniProt)
UniProt
Find proteins for Q40577 (Nicotiana tabacum) Explore Q40577  Go to UniProtKB:  Q40577

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MG	B [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free:  0.244 (Depositor), 0.240 (DCC) 
• R-Value Work:  0.217 (Depositor), 0.210 (DCC) 
• R-Value Observed: 0.217 (Depositor) 

Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 126.121	α = 90
b = 126.121	β = 90
c = 119.734	γ = 90

Software Package:

Software Name	Purpose
MACSCIENCE	data collection
SCALEPACK	data scaling
CNS	refinement
MACSCIENCE	data reduction
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-06-24 
Deposition Author(s): Starks, C.S., Rising, K.A., Chappell, J., Noel, J.P.

Revision History  

• Version 1.0: 2003-06-24
  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: 2021-10-27
  Changes: Database references, Derived calculations
• Version 1.4: 2023-08-09
  Changes: Data collection, Refinement description