5WSL

Structural studies of keratinase from Meiothermus taiwanensis WR-220


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.175 
  • R-Value Work: 0.145 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

The discovery of novel heat-stable keratinases from Meiothermus taiwanensis WR-220 and other extremophiles

Wu, W.L.Chen, M.Y.Tu, I.F.Lin, Y.C.EswarKumar, N.Chen, M.Y.Ho, M.C.Wu, S.H.

(2017) Sci Rep 7: 4658-4658

  • DOI: 10.1038/s41598-017-04723-4

  • PubMed Abstract: 
  • Billions of tons of keratin bio-wastes are generated by poultry industry annually but discarded that result in serious environmental pollution. Keratinase is a broad spectrum protease with the unique ability to degrade keratin, providing an eco-frien ...

    Billions of tons of keratin bio-wastes are generated by poultry industry annually but discarded that result in serious environmental pollution. Keratinase is a broad spectrum protease with the unique ability to degrade keratin, providing an eco-friendly way to convert keratin wastes to valuable amino acids. In this report, a feather-degrading thermophilic bacterium, Meiothermus taiwanensis WR-220, was investigated due to its ability to apparently complete feather decay at 65 °C in two days. By genomics, proteomics, and biochemical approaches, the extracellular heat-stable keratinase (MtaKer) from M. taiwanensis WR-220 was identified. The recombinant MtaKer (rMtaKer) possesses keratinolytic activities at temperatures ranging from 25 to 75 °C and pH from 4 to 11, with a maximum keratinolytic activity at 65 °C and pH 10. The phylogenetic and structural analysis revealed that MtaKer shares low sequence identity but high structural similarity with known keratinases. Accordingly, our findings have enabled the discovery of more keratinases from other extremophiles, Thermus and Deinococcus. Proteins encoded in the extremophiles shall be evolved to be functional in the extreme conditions. Hence, our study expands the current boundary of hunting keratinases that can tolerate extreme conditions for keratin wastes biorecycle and other industrial applications.


    Organizational Affiliation

    Institute of Biological Chemistry, Academia Sinica, Taipei, 11529, Taiwan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
keratinase
A, B, C
299N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.175 
  • R-Value Work: 0.145 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 59.210α = 90.00
b = 67.088β = 96.07
c = 92.857γ = 90.00
Software Package:
Software NamePurpose
HKLdata reduction
PDB_EXTRACTdata extraction
HKL-2000data reduction
REFMACrefinement
HKL-2000data collection
HKL-2000data scaling
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-10-18
    Type: Initial release