1KVE

KILLER TOXIN FROM HALOTOLERANT YEAST


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Work: 0.172 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The novel acidophilic structure of the killer toxin from halotolerant yeast demonstrates remarkable folding similarity with a fungal killer toxin.

Kashiwagi, T.Kunishima, N.Suzuki, C.Tsuchiya, F.Nikkuni, S.Arata, Y.Morikawa, K.

(1997) Structure 5: 81-94

  • Primary Citation of Related Structures:  1KVD

  • PubMed Abstract: 
  • Several strains of yeasts and fungi produce proteinous substances, termed killer toxins, which kill sensitive strains. The SMK toxin, secreted by the halotolerant yeast Pichia farinosa KK1 strain, uniquely exhibits its maximum killer activity under c ...

    Several strains of yeasts and fungi produce proteinous substances, termed killer toxins, which kill sensitive strains. The SMK toxin, secreted by the halotolerant yeast Pichia farinosa KK1 strain, uniquely exhibits its maximum killer activity under conditions of acidic pH and high salt concentration. The toxin is composed of two distinct subunits, alpha and beta, which tightly interact with each other under acidic conditions. However, they are easily dissociated under neutral conditions and lose the killer activity. The three-dimensional structure of the SMK toxin will provide a better understanding of the mechanism of toxicity of this protein and the cause of its unique pH-dependent stability.


    Related Citations: 
    • Crystallization and Preliminary X-Ray Diffraction Studies of a Novel Killer Toxin from a Halotolerant Yeast Pichia Farinosa
      Kunishima, N.,Kashiwagi, T.,Suzuki, C.,Nikkuni, S.,Tsuchiya, F.,Arata, Y.,Morikawa, K.
      () TO BE PUBLISHED --: --


    Organizational Affiliation

    Protein Engineering Research Institute [Biomolecular Engineering Research Institute (BERI) as of the 1st of April 1996], 6-2-3, Furuedai, Suita, Osaka 565, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SMK TOXIN
A, C
63Millerozyma farinosaGene Names: SMK1
Find proteins for P19972 (Millerozyma farinosa)
Go to UniProtKB:  P19972
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
SMK TOXIN
B, D
77Millerozyma farinosaGene Names: SMK1
Find proteins for P19972 (Millerozyma farinosa)
Go to UniProtKB:  P19972
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Work: 0.172 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 81.120α = 90.00
b = 81.120β = 90.00
c = 118.680γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
PROLSQrefinement
DENZOdata reduction
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-04-01
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance