Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 20.02 kDa 
• Atom Count: 1555 
• Modelled Residue Count: 179 
• Deposited Residue Count: 180 
• Unique protein chains: 1

1J84

STRUCTURE OF FAM17 CARBOHYDRATE BINDING MODULE FROM CLOSTRIDIUM CELLULOVORANS WITH BOUND CELLOTETRAOSE

• PDB DOI: 10.2210/pdb1J84/pdb

• Classification: HYDROLASE
• Organism(s): Clostridium cellulovorans
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2001-05-20 Released: 2001-12-12 
• Deposition Author(s): Notenboom, V., Boraston, A.B., Chiu, P., Freelove, A.C.J., Kilburn, D.G., Rose, D.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.02 Å
• R-Value Free: 0.264 
• R-Value Work: 0.225 

Literature

Recognition of cello-oligosaccharides by a family 17 carbohydrate-binding module: an X-ray crystallographic, thermodynamic and mutagenic study.

Notenboom, V., Boraston, A.B., Chiu, P., Freelove, A.C., Kilburn, D.G., Rose, D.R.

(2001) J Mol Biol 314: 797-806

• PubMed: 11733998 
• DOI: 10.1006/jmbi.2001.5153
• Primary Citation of Related Structures:  
  1J83, 1J84


• PubMed Abstract: 
  

The crystal structure of the Clostridium cellulovorans carbohydrate-binding module (CBM) belonging to family 17 has been solved to 1.7 A resolution by multiple anomalous dispersion methods. CBM17 binds to non-crystalline cellulose and soluble beta-1,4-glucans, with a minimal binding requirement of cellotriose and optimal affinity for cellohexaose. The crystal structure of CBM17 complexed with cellotetraose solved at 2.0 A resolution revealed that binding occurs in a cleft on the surface of the molecule involving two tryptophan residues and several charged amino acids. Thermodynamic binding studies and alanine scanning mutagenesis in combination with the cellotetraose complex structure allowed the mapping of the CBM17 binding cleft. In contrast to the binding groove characteristic of family 4 CBMs, family 17 CBMs appear to have a very shallow binding cleft that may be more accessible to cellulose chains in non-crystalline cellulose than the deeper binding clefts of family 4 CBMs. The structural differences in these two modules may reflect non-overlapping binding niches on cellulose surfaces.

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Organizational Affiliation: 

Protein Engineering Networks of Centres of Excellence, University of British Columbia, Vancouver, Canada.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
endo-1,4-beta glucanase EngF	A	180	Clostridium cellulovorans	Mutation(s): 0  Gene Names: engF EC: 3.2.1.4
UniProt
Find proteins for P94622 (Clostridium cellulovorans) Explore P94622  Go to UniProtKB:  P94622

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-4)-beta-D-glucopyranose	B	4		N/A
Glycosylation Resources
GlyTouCan:  G00025MO GlyCosmos:  G00025MO GlyGen:  G00025MO

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900011	B	beta-cellotetraose	Oligosaccharide / Metabolism		Ligand Interaction

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.02 Å
• R-Value Free: 0.264 
• R-Value Work: 0.225 
• Space Group: P 6₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 69.095	α = 90
b = 69.095	β = 90
c = 143.59	γ = 120

Software Package:

Software Name	Purpose
AMoRE	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-05-20 
• Released Date: 2001-12-12 
Deposition Author(s): Notenboom, V., Boraston, A.B., Chiu, P., Freelove, A.C.J., Kilburn, D.G., Rose, D.R.

Revision History  

• Version 1.0: 2001-12-12
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Structure summary