3MGW

Thermodynamics and structure of a salmon cold-active goose-type lysozyme


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.178 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Thermodynamics and structure of a salmon cold active goose-type lysozyme

Kyomuhendo, P.Myrnes, B.Brandsdal, B.O.Smalas, A.O.Nilsen, I.W.Helland, R.

(2010) Comp Biochem Physiol B 156: 254-263

  • DOI: 10.1016/j.cbpb.2010.04.002
  • Primary Citation of Related Structures:  
    3MGW

  • PubMed Abstract: 
  • Atlantic salmon goose-type lysozyme (SalG) was previously shown to display features of cold-adaptation as well as renaturation following heat treatment. In this study differential scanning calorimetry (DSC) was carried out to investigate unfolding an ...

    Atlantic salmon goose-type lysozyme (SalG) was previously shown to display features of cold-adaptation as well as renaturation following heat treatment. In this study differential scanning calorimetry (DSC) was carried out to investigate unfolding and potential refolding, while X-ray crystallography was used to study structural factors contributing to the temperature-related characteristics. The recombinant SalG has a melting temperature (T(m)) of 36.8 degrees C under thermal denaturation conditions and regains activity after returning to permissive (low) temperature. Furthermore, refolding is dramatically reduced in solutions with high SalG concentrations, coupled with significant protein precipitation. The structural features of SalG closely resemble those of other g-type lysozymes. However, the N-terminal region of SalG is less anchored to the rest of the molecule due to the absence of disulphide bonds, thus, contributing significantly to the low T(m) of SalG. The absence of disulphide bonds and the distribution of salt bridges may at the same time ease refolding leading to renaturation.


    Organizational Affiliation

    Nofima Marine, Tromsø, Norway.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Lysozyme gA181Salmo salarMutation(s): 0 
Gene Names: lysGLYGLOC100136420
EC: 3.2.1.17
Find proteins for A6PZ97 (Salmo salar)
Explore A6PZ97 
Go to UniProtKB:  A6PZ97
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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

Download CCD File 
A
COBALT (II) ION
Co
XLJKHNWPARRRJB-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.178 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.15α = 90
b = 103.15β = 90
c = 48.67γ = 120
Software Package:
Software NamePurpose
MAR345data collection
MOLREPphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-05-05
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2014-02-19
    Changes: Database references
  • Version 1.3: 2017-11-08
    Changes: Refinement description