5CGQ

Crystal structure of Tryptophan Synthase from Salmonella typhimurium in complex with F9 ligand in the alpha-site and the product L-Tryptophan in the beta-site.

• PDB DOI: https://doi.org/10.2210/pdb5CGQ/pdb

• Classification: LYASE/LYASE INHIBITOR
• Organism(s): Salmonella enterica subsp. enterica serovar Typhimurium
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2015-07-09 Released: 2016-07-13 
• Deposition Author(s): Hilario, E., Caulkins, B.G., Young, R.P., Dunn, M.F., Mueller, L.J., Fan, L.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.18 Å
• R-Value Free: 0.161 
• R-Value Work: 0.140 
• R-Value Observed: 0.141 

Literature

Crystal structure of Tryptophan Synthase from Salmonella typhimurium in complex with F9 ligand and the product L-Tryptophan in the beta-site.

Hilario, E., Caulkins, B.G., Young, R.P., Dunn, M.F., Mueller, L.J., Fan, L.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 

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

Macromolecule Content

• Total Structure Weight: 73.06 kDa 
• Atom Count: 6,222 
• Modelled Residue Count: 658 
• Deposited Residue Count: 665 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tryptophan synthase alpha chain	A	268	Salmonella enterica subsp. enterica serovar Typhimurium	Mutation(s): 0  Gene Names: trpA EC: 4.2.1.20
UniProt
Find proteins for P00929 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P00929  Go to UniProtKB:  P00929

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Tryptophan synthase beta chain	B	397	Salmonella enterica subsp. enterica serovar Typhimurium	Mutation(s): 0  Gene Names: trpB EC: 4.2.1.20
UniProt
Find proteins for P0A2K1 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P0A2K1  Go to UniProtKB:  P0A2K1

Small Molecules

Ligands 6 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
F9F	C [auth A]	2-({[4-(TRIFLUOROMETHOXY)PHENYL]SULFONYL}AMINO)ETHYL DIHYDROGEN PHOSPHATE C9 H11 F3 N O7 P S JDDKDMFCTOZVCJ-UHFFFAOYSA-N
PLP	E [auth B]	PYRIDOXAL-5'-PHOSPHATE C8 H10 N O6 P NGVDGCNFYWLIFO-UHFFFAOYSA-N
TRP	F [auth B]	TRYPTOPHAN C11 H12 N2 O2 QIVBCDIJIAJPQS-VIFPVBQESA-N
BCN	G [auth B]	BICINE C6 H13 N O4 FSVCELGFZIQNCK-UHFFFAOYSA-N
CS	D [auth A], H [auth B], I [auth B]	CESIUM ION Cs NCMHKCKGHRPLCM-UHFFFAOYSA-N
EDO	J [auth B]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.18 Å
• R-Value Free: 0.161 
• R-Value Work: 0.140 
• R-Value Observed: 0.141 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 182.553	α = 90
b = 59.3	β = 94.82
c = 67.368	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing
DM	phasing
PDB_EXTRACT	data extraction

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2016-07-13 
Deposition Author(s): Hilario, E., Caulkins, B.G., Young, R.P., Dunn, M.F., Mueller, L.J., Fan, L.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	R01GM097569

Revision History  

• Version 1.0: 2016-07-13
  Type: Initial release
  
• Version 1.1: 2017-09-27
  Changes: Author supporting evidence, Derived calculations, Refinement description
• Version 1.2: 2019-12-25
  Changes: Author supporting evidence
• Version 1.3: 2023-09-27
  Changes: Data collection, Database references, Derived calculations, Refinement description