Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 137.69 kDa 
• Atom Count: 10380 
• Modelled Residue Count: 1224 
• Deposited Residue Count: 1228 
• Unique protein chains: 1

1G87

THE CRYSTAL STRUCTURE OF ENDOGLUCANASE 9G FROM CLOSTRIDIUM CELLULOLYTICUM

• DOI: 10.2210/pdb1G87/pdb

• Classification: HYDROLASE
• Organism(s): Ruminiclostridium cellulolyticum
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2000-11-16 Released: 2003-07-15 
• Deposition Author(s): Mandelman, D., Belaich, A., Belaich, J.P., Aghajari, N., Driguez, H., Haser, R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.200 
• R-Value Work: 0.174 
• R-Value Observed: 0.174 

Literature

X-Ray Crystal Structure of the Multidomain Endoglucanase Cel9G from Clostridium cellulolyticum Complexed with Natural and Synthetic Cello-Oligosaccharides

Mandelman, D., Belaich, A., Belaich, J.P., Aghajari, N., Driguez, H., Haser, R.

(2003) J Bacteriol 185: 4127-4135

• PubMed: 12837787 
• DOI: 10.1128/jb.185.14.4127-4135.2003
• Primary Citation of Related Structures:  
  1KFG, 1K72, 1GA2, 1G87


• PubMed Abstract: 
  

Complete cellulose degradation is the first step in the use of biomass as a source of renewable energy. To this end, the engineering of novel cellulase activity, the activity responsible for the hydrolysis of the beta-1,4-glycosidic bonds in cellulose, is a topic of great interest. The high-resolution X-ray crystal structure of a multidomain endoglucanase from Clostridium cellulolyticum has been determined at a 1.6-A resolution. The endoglucanase, Cel9G, is comprised of a family 9 catalytic domain attached to a family III(c) cellulose-binding domain. The two domains together form a flat platform onto which crystalline cellulose is suggested to bind and be fed into the active-site cleft for endolytic hydrolysis. To further dissect the structural basis of cellulose binding and hydrolysis, the structures of Cel9G in the presence of cellobiose, cellotriose, and a DP-10 thio-oligosaccharide inhibitor were resolved at resolutions of 1.7, 1.8, and 1.9 A, respectively.

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Organizational Affiliation: 

Laboratoire de BioCristallographie, Institut de Biologie et Chimie des Protéines, UMR 5086, CNRS et Université Claude Bernard Lyon I, 69367 Lyon, Cedex 07, France.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ENDOCELLULASE 9G	A, B	614	Ruminiclostridium cellulolyticum	Mutation(s): 0  Gene Names: celCCG EC: 3.2.1.4
Find proteins for P37700 (Ruminiclostridium cellulolyticum (strain ATCC 35319 / DSM 5812 / JCM 6584 / H10)) Explore P37700  Go to UniProtKB:  P37700

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	CA [auth B], DA [auth B], K [auth A], L [auth A], M [auth A], N [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
EDO	AA [auth B],  BA [auth B],  H [auth A],  I [auth A],  J [auth A],  U [auth B],  V [auth B],  W [auth B],  X [auth B],  Y [auth B],  Z [auth B]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
CA	C [auth A], D [auth A], O [auth B], P [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N
MG	E [auth A], F [auth A], G [auth A], Q [auth B], R [auth B], S [auth B], T [auth B]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.200 
• R-Value Work: 0.174 
• R-Value Observed: 0.174 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 56.85	α = 94.22
b = 57.72	β = 100.87
c = 86.27	γ = 99.61

Software Package:

Software Name	Purpose
MAR345	data collection
SCALEPACK	data scaling
AMoRE	phasing
ARP/wARP	model building
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-11-16 
• Released Date: 2003-07-15 
Deposition Author(s): Mandelman, D., Belaich, A., Belaich, J.P., Aghajari, N., Driguez, H., Haser, R.

Revision History  

• Version 1.0: 2003-07-15
  Type: Initial release
  
• Version 1.1: 2008-04-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.3: 2017-10-04
  Changes: Refinement description