Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 21.54 kDa 
• Atom Count: 1,574 
• Modelled Residue Count: 171 
• Deposited Residue Count: 179 
• Unique protein chains: 1

 1OF4

Structural and thermodynamic dissection of specific mannan recognition by a carbohydrate-binding module, TmCBM27

• PDB DOI: 10.2210/pdb1OF4/pdb

• Classification: HYDROLASE/CARBOHYDRATE BINDING
• Organism(s): Thermotoga maritima MSB8
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2003-04-07 Released: 2003-04-17 
• Deposition Author(s): Boraston, A.B., Revett, T.J., Boraston, C.M., Nurizzo, D., Davies, G.J.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.206 
• R-Value Work: 0.163 
• R-Value Observed: 0.165 

Literature

Structural and Thermodynamic Dissection of Specific Mannan Recognition by a Carbohydrate Binding Module, Tmcbm27

Boraston, A.B., Revett, T.J., Boraston, C.M., Nurizzo, D., Davies, G.J.

(2003) Structure 11: 665

• PubMed: 12791255 
• DOI: 10.1016/s0969-2126(03)00100-x
• Primary Citation of Related Structures:  
  1OF3, 1OF4, 1OH4


• PubMed Abstract: 
  

The C-terminal 176 amino acids of a Thermotoga maritima mannanase (Man5) constitute a carbohydrate binding module (CBM) that has been classified into CBM family 27. The isolated CBM27 domain, named TmCBM27, binds tightly (K(a)s 10(5)-10(6) M(-1)) to beta-1, 4-mannooligosaccharides, carob galactomannan, and konjac glucomannan, but not to cellulose (insoluble and soluble) or soluble birchwood xylan. The X-ray crystal structures of native TmCBM27, a TmCBM27-mannohexaose complex, and a TmCBM27-6(3),6(4)-alpha-D-galactosyl-mannopentaose complex at 2.0 A, 1.6 A, and 1.35 A, respectively, reveal the basis of TmCBM27's specificity for mannans. In particular, the latter complex, which is the first structure of a CBM in complex with a branched plant cell wall polysaccharide, illustrates how the architecture of the binding site can influence the recognition of naturally substituted polysaccharides.

---

Organizational Affiliation: 

Department of Chemistry, University of York, Heslington, York YO10 5YW, United Kingdom.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BETA-MANNOSIDASE	A	179	Thermotoga maritima MSB8	Mutation(s): 0  EC: 3.2.1.78
UniProt
Find proteins for Q9RIK9 (Thermotoga maritima) Explore Q9RIK9  Go to UniProtKB:  Q9RIK9

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
beta-D-mannopyranose-(1-4)-beta-D-mannopyranose-(1-4)-beta-D-mannopyranose-(1-4)-beta-D-mannopyranose-(1-4)-beta-D-mannopyranose	B	5		N/A
Glycosylation Resources
GlyTouCan:  G91924WY GlyCosmos:  G91924WY GlyGen:  G91924WY

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	C [auth A], D [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
CA	E [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.206 
• R-Value Work: 0.163 
• R-Value Observed: 0.165 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 31.913	α = 90
b = 49.567	β = 90
c = 96.922	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-04-17 
Deposition Author(s): Boraston, A.B., Revett, T.J., Boraston, C.M., Nurizzo, D., Davies, G.J.

Revision History  

• Version 1.0: 2003-04-17
  Type: Initial release
  
• Version 1.1: 2011-05-08
  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, Other, Structure summary