3P6B

The crystal structure of CelK CBM4 from Clostridium thermocellum


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.212 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of CBM4 from Clostridium thermocellum cellulase K.

Alahuhta, M.Luo, Y.Ding, S.Y.Himmel, M.E.Lunin, V.V.

(2011) Acta Crystallogr.,Sect.F 67: 527-530

  • DOI: 10.1107/S1744309111003307

  • PubMed Abstract: 
  • Here, a 2.0 Å resolution X-ray structure of Clostridium thermocellum cellulase K family 4 carbohydrate-binding module (CelK CBM4) is reported. The resulting structure was refined to an R factor of 0.212 and an R(free) of 0.274. Structural analysis sh ...

    Here, a 2.0 Å resolution X-ray structure of Clostridium thermocellum cellulase K family 4 carbohydrate-binding module (CelK CBM4) is reported. The resulting structure was refined to an R factor of 0.212 and an R(free) of 0.274. Structural analysis shows that this new structure is very similar to the previously solved structure of C. thermocellum CbhA CBM4. Most importantly, these data support the previously proposed notion of an extended binding pocket using a novel tryptophan-containing loop that may be highly conserved in clostridial CBM4 proteins.


    Organizational Affiliation

    BioSciences Center, National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, Colorado 80401-3305, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cellulose 1,4-beta-cellobiosidase
A, B
205Clostridium thermocellumMutation(s): 0 
Gene Names: celK
EC: 3.2.1.91
Find proteins for P0C2S1 (Clostridium thermocellum)
Go to UniProtKB:  P0C2S1
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
ACT
Query on ACT

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Download CCD File 
A
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

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Download CCD File 
A, B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.212 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 65.949α = 90.00
b = 65.949β = 90.00
c = 272.436γ = 90.00
Software Package:
Software NamePurpose
PROTEUM PLUSdata collection
MOLREPphasing
PROTEUM PLUSdata scaling
REFMACrefinement
SAINTdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-08-24
    Type: Initial release
  • Version 1.1: 2013-03-27
    Type: Other