3NAV

Crystal structure of an alpha subunit of tryptophan synthase from Vibrio cholerae O1 biovar El Tor str. N16961

• PDB DOI: https://doi.org/10.2210/pdb3NAV/pdb

• Classification: LYASE
• Organism(s): Vibrio cholerae O1 biovar El Tor str. N16961
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2010-06-02 Released: 2010-06-30 
• Deposition Author(s): Nocek, B., Makowska-Grzyska, M., Kwon, K., Anderson, A., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.233 
• R-Value Work: 0.179 
• R-Value Observed: 0.182 

Starting Model: experimental

Literature

Crystal structure of an alpha subunit of tryptophan synthase from Vibrio cholerae O1 biovar El Tor str. N16961

Nocek, B., Makowska-Grzyska, M., Kwon, K., Anderson, W., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 57.64 kDa 
• Atom Count: 4,273 
• Modelled Residue Count: 519 
• Deposited Residue Count: 542 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tryptophan synthase alpha chain	A, B	271	Vibrio cholerae O1 biovar El Tor str. N16961	Mutation(s): 0  EC: 4.2.1.20
UniProt
Find proteins for Q9KST7 (Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)) Explore Q9KST7  Go to UniProtKB:  Q9KST7

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EDO	C [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.233 
• R-Value Work: 0.179 
• R-Value Observed: 0.182 
• Space Group: P 2₁ 2₁ 2₁
• Diffraction Data: https://doi.org/10.18430/m33nav

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 57.594	α = 90
b = 60.38	β = 90
c = 141.197	γ = 90

Software Package:

Software Name	Purpose
SBC-Collect	data collection
MOLREP	phasing
REFMAC	refinement
HKL-3000	data reduction
HKL-3000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-06-30 
Deposition Author(s): Nocek, B., Makowska-Grzyska, M., Kwon, K., Anderson, A., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)

Revision History  

• Version 1.0: 2010-06-30
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2023-09-06
  Changes: Data collection, Database references, Derived calculations, Refinement description