1IGS

INDOLE-3-GLYCEROLPHOSPHATE SYNTHASE FROM SULFOLOBUS SOLFATARICUS AT 2.0 A RESOLUTION

• PDB DOI: https://doi.org/10.2210/pdb1IGS/pdb

• Classification: SYNTHASE
• Organism(s): Saccharolobus solfataricus
• Expression System: Escherichia coli str. K-12 substr. W3110
• Mutation(s): No 


• Deposited: 1995-08-11 Released: 1996-07-11 
• Deposition Author(s): Hennig, M., Darimont, B., Kirschner, K., Jansonius, J.N.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work: 0.177 
• R-Value Observed: 0.177 

Literature

2.0 A structure of indole-3-glycerol phosphate synthase from the hyperthermophile Sulfolobus solfataricus: possible determinants of protein stability.

Hennig, M., Darimont, B., Sterner, R., Kirschner, K., Jansonius, J.N.

(1995) Structure 3: 1295-1306

• PubMed: 8747456 
• DOI: https://doi.org/10.1016/s0969-2126(01)00267-2
• Primary Citation of Related Structures:  
  1IGS


• PubMed Abstract: 
  

  Recent efforts to understand the basis of protein stability have focused attention on comparative studies of proteins from hyperthermophilic and mesophilic organisms. Most work to date has been on either oligomeric enzymes or monomers comprising more than one domain. Such studies are hampered by the need to distinguish between stabilizing interactions acting between subunits or domains from those acting within domains. In order to simplify the search for determinants of protein stability we have chosen to study the monomeric enzyme indole-3-glycerol phosphate synthase from the hyperthermophilic archaeon Sulfolobus solfataricus (sIGPS), which grows optimally at 90 degrees C.

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Organizational Affiliation: 

Department of Structural Biology, University of Basel, Switzerland.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 28.72 kDa 
• Atom Count: 2,258 
• Modelled Residue Count: 247 
• Deposited Residue Count: 248 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
INDOLE-3-GLYCEROLPHOSPHATE SYNTHASE	A	248	Saccharolobus solfataricus	Mutation(s): 0  Gene Names: TRPC
UniProt
Find proteins for Q06121 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)) Explore Q06121  Go to UniProtKB:  Q06121

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PO4	B [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work: 0.177 
• R-Value Observed: 0.177 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 58	α = 90
b = 73.8	β = 90
c = 104.3	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
MOSFLM	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1996-07-11 
Deposition Author(s): Hennig, M., Darimont, B., Kirschner, K., Jansonius, J.N.

Revision History  

• Version 1.0: 1996-07-11
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-07
  Changes: Data collection, Database references, Derived calculations, Other