5FIP

Discovery and characterization of a novel thermostable and highly halotolerant GH5 cellulase from an Icelandic hot spring isolate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.88 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Discovery and Characterization of a Thermostable and Highly Halotolerant Gh5 Cellulase from an Icelandic Hot Spring Isolate.

Zarafeta, D.Kissas, D.Sayer, C.Gudbergsdottir, S.R.Ladoukakis, E.Isupov, M.N.Chatziioannou, A.Peng, X.Littlechild, J.A.Skretas, G.Kolisis, F.N.

(2016) Plos One 11: 46454

  • DOI: 10.1371/journal.pone.0146454

  • PubMed Abstract: 
  • With the ultimate goal of identifying robust cellulases for industrial biocatalytic conversions, we have isolated and characterized a new thermostable and very halotolerant GH5 cellulase. This new enzyme, termed CelDZ1, was identified by bioinformati ...

    With the ultimate goal of identifying robust cellulases for industrial biocatalytic conversions, we have isolated and characterized a new thermostable and very halotolerant GH5 cellulase. This new enzyme, termed CelDZ1, was identified by bioinformatic analysis from the genome of a polysaccharide-enrichment culture isolate, initiated from material collected from an Icelandic hot spring. Biochemical characterization of CelDZ1 revealed that it is a glycoside hydrolase with optimal activity at 70°C and pH 5.0 that exhibits good thermostability, high halotolerance at near-saturating salt concentrations, and resistance towards metal ions and other denaturing agents. X-ray crystallography of the new enzyme showed that CelDZ1 is the first reported cellulase structure that lacks the defined sugar-binding 2 subsite and revealed structural features which provide potential explanations of its biochemical characteristics.


    Organizational Affiliation

    Institute of Biology, Medicinal Chemistry & Biotechnology, National Hellenic Research Foundation, Athens, Greece.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GH5 CELLULASE
A, B, C, D
334Thermoanaerobacterium saccharolyticum (strain DSM 8691 / JW/SL-YS485)Mutation(s): 0 
Find proteins for I3VS73 (Thermoanaerobacterium saccharolyticum (strain DSM 8691 / JW/SL-YS485))
Go to UniProtKB:  I3VS73
Small Molecules
Ligands 7 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A, B, C, D
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
EDO
Query on EDO

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Download CCD File 
A, B, C, D
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
PG4
Query on PG4

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Download CCD File 
D
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
IPA
Query on IPA

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Download CCD File 
A, B, C, D
ISOPROPYL ALCOHOL
2-PROPANOL
C3 H8 O
KFZMGEQAYNKOFK-UHFFFAOYSA-N
 Ligand Interaction
PGE
Query on PGE

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Download CCD File 
A, B, C
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
 Ligand Interaction
PG6
Query on PG6

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Download CCD File 
B
1-(2-METHOXY-ETHOXY)-2-{2-[2-(2-METHOXY-ETHOXY]-ETHOXY}-ETHANE
C12 H26 O6
DMDPGPKXQDIQQG-UHFFFAOYSA-N
 Ligand Interaction
PEG
Query on PEG

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Download CCD File 
A, B, C, D
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.88 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.193 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 107.340α = 90.00
b = 137.450β = 114.44
c = 121.340γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
XDSdata reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-01-20
    Type: Initial release