3WVJ

The crystal structure of native glycosidic hydrolase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural analyses and yeast production of the beta-1,3-1,4-glucanase catalytic module encoded by the licB gene of Clostridium thermocellum.

Chen, C.C.Huang, J.W.Zhao, P.Ko, T.P.Huang, C.H.Chan, H.C.Huang, Z.Liu, W.Cheng, Y.S.Liu, J.R.Guo, R.T.

(2015) Enzyme.Microb.Technol. 71: 1-7

  • DOI: 10.1016/j.enzmictec.2015.01.002

  • PubMed Abstract: 
  • A thermophilic glycoside hydrolase family 16 (GH16) β-1,3-1,4-glucanase from Clostridium thermocellum (CtLic16A) holds great potentials in industrial applications due to its high specific activity and outstanding thermostability. In order to understa ...

    A thermophilic glycoside hydrolase family 16 (GH16) β-1,3-1,4-glucanase from Clostridium thermocellum (CtLic16A) holds great potentials in industrial applications due to its high specific activity and outstanding thermostability. In order to understand its molecular machinery, the crystal structure of CtLic16A was determined to 1.95Å resolution. The enzyme folds into a classic GH16 β-jellyroll architecture which consists of two β-sheets atop each other, with the substrate-binding cleft lying on the concave side of the inner β-sheet. Two Bis-Tris propane molecules were found in the positive and negative substrate binding sites. Structural analysis suggests that the major differences between the CtLic16A and other GH16 β-1,3-1,4-glucanase structures occur at the protein exterior. Furthermore, the high catalytic efficacy and thermal profile of the CtLic16A are preserved in the enzyme produced in Pichia pastoris, encouraging its further commercial applications.


    Organizational Affiliation

    Industrial Enzymes National Engineering Laboratory, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Beta-glucanase
A, B
220Clostridium thermocellum (strain ATCC 27405 / DSM 1237 / NBRC 103400 / NCIMB 10682 / NRRL B-4536 / VPI 7372)Mutation(s): 0 
Gene Names: licB (lam1)
EC: 3.2.1.73
Find proteins for A3DBX3 (Clostridium thermocellum (strain ATCC 27405 / DSM 1237 / NBRC 103400 / NCIMB 10682 / NRRL B-4536 / VPI 7372))
Go to UniProtKB:  A3DBX3
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
B3P
Query on B3P

Download SDF File 
Download CCD File 
A, B
2-[3-(2-HYDROXY-1,1-DIHYDROXYMETHYL-ETHYLAMINO)-PROPYLAMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
C11 H26 N2 O6
HHKZCCWKTZRCCL-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.190 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 74.450α = 90.00
b = 74.450β = 90.00
c = 182.918γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data reduction
REFMACrefinement
PHASERphasing
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-06-24
    Type: Initial release