1X1Q

Crystal structure of tryptophan synthase beta chain from Thermus thermophilus HB8

• PDB DOI:  https://doi.org/10.2210/pdb1X1Q/pdb

• Classification: LYASE
• Organism(s): Thermus thermophilus HB8
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2005-04-11 Released: 2006-08-01 
• Deposition Author(s): Asada, Y., Kunishima, N., RIKEN Structural Genomics/Proteomics Initiative (RSGI)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.245 
• R-Value Work: 0.201 
• R-Value Observed: 0.203 

Literature

Crystal structure of tryptophan synthase beta chain from Thermus thermophilus HB8

Asada, Y., Kunishima, N.

To be published.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 91.77 kDa 
• Atom Count: 5,984 
• Modelled Residue Count: 739 
• Deposited Residue Count: 836 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
tryptophan synthase beta chain	A, B	418	Thermus thermophilus HB8	Mutation(s): 10  EC: 4.2.1.20
UniProt
Find proteins for P16609 (Thermus thermophilus (strain ATCC BAA-163 / DSM 7039 / HB27)) Explore P16609  Go to UniProtKB:  P16609

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL	C [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

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: 2.50 Å
• R-Value Free: 0.245 
• R-Value Work: 0.201 
• R-Value Observed: 0.203 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 92.187	α = 90
b = 109.993	β = 90
c = 74.672	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
SCALEPACK	data scaling
MOLREP	phasing
CNS	refinement
HKL-2000	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-08-01 
Deposition Author(s): Asada, Y., Kunishima, N., RIKEN Structural Genomics/Proteomics Initiative (RSGI)

Revision History  

• Version 1.0: 2006-08-01
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Source and taxonomy, Version format compliance