3F7O

Crystal structure of Cuticle-Degrading Protease from Paecilomyces lilacinus (PL646)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.229 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The crystal structures of two cuticle-degrading proteases from nematophagous fungi and their contribution to infection against nematodes.

Liang, L.Meng, Z.Ye, F.Yang, J.Liu, S.Sun, Y.Guo, Y.Mi, Q.Huang, X.Zou, C.Rao, Z.Lou, Z.Zhang, K.Q.

(2010) Faseb J. 24: 1391-1400

  • DOI: 10.1096/fj.09-136408
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Cuticle-degrading proteases are involved in the breakdown of cuticle/eggshells of nematodes or insects, a hard physical barrier against fungal infections. Understanding the 3-dimensional structures of these proteins can provide crucial information fo ...

    Cuticle-degrading proteases are involved in the breakdown of cuticle/eggshells of nematodes or insects, a hard physical barrier against fungal infections. Understanding the 3-dimensional structures of these proteins can provide crucial information for improving the effectiveness of these fungi in biocontrol applications, e.g., by targeted protein engineering. However, the structures of these proteases remain unknown. Here, we report the structures of two cuticle-degrading proteases from two species of nematophagous fungi. The two structures were solved with X-ray crystallography to resolutions of 1.65 A (Ver112) and 2.1 A (PL646), respectively. Crystal structures of PL646 and Ver112 were found to be very similar to each other, and similar to that of proteinase K from another fungus Tritirachium album. Differences between the structures were found among residues of the substrate binding sites (S1 and S4). Experimental studies showed that the enzymes differed in hydrolytic activity to synthetic peptide substrates. Our analyses of the hydrophobic/hydrophilic and electrostatic features of these two proteins suggest that their surfaces likely play important roles during fungal infection against nematodes. The two crystal structures provide a solid basis for investigating the relationship between structure and function of cuticle-degrading proteases.


    Organizational Affiliation

    Laboratory for Conservation and Utilization of Bioresources, Yunnan University, 2 North Cuihu Road, Kunming 650091, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine protease
A, B
284Purpureocillium lilacinumMutation(s): 0 
Find proteins for Q01471 (Purpureocillium lilacinum)
Go to UniProtKB:  Q01471
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
(ALA)(ALA)(PRO)(VAL)
X, Y
4N/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
CA
Query on CA

Download SDF File 
Download CCD File 
A, B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
HMB
Query on HMB

Download SDF File 
Download CCD File 
A, B
(4S)-4-hydroxy-4-methoxybutanoic acid
C5 H10 O4
ONECVBBAMLSRPV-YFKPBYRVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.229 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 65.108α = 90.00
b = 62.536β = 92.76
c = 67.562γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data reduction
CNSrefinement
CNSphasing
CrystalCleardata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-11-17
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Non-polymer description, Version format compliance
  • Version 1.2: 2014-04-02
    Type: Database references