1MEG

CRYSTAL STRUCTURE OF A CARICAIN D158E MUTANT IN COMPLEX WITH E-64


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of a caricain D158E mutant in complex with E-64.

Katerelos, N.A.Taylor, M.A.Scott, M.Goodenough, P.W.Pickersgill, R.W.

(1996) FEBS Lett. 392: 35-39


  • PubMed Abstract: 
  • The structure of the D158E mutant of caricain (previously known as papaya protease omega) in complex with E-64 has been determined at 2.0 A resolution (overall R factor 19.3%). The structure reveals that the substituted glutamate makes the same patte ...

    The structure of the D158E mutant of caricain (previously known as papaya protease omega) in complex with E-64 has been determined at 2.0 A resolution (overall R factor 19.3%). The structure reveals that the substituted glutamate makes the same pattern of hydrogen bonds as the aspartate in native caricain. This was not anticipated since in the native structure there is insufficient room to accommodate the glutamate side chain. The glutamate is accommodated in the mutant by a local expansion of the structure demonstrating that small structural changes are responsible for the change in activity.


    Related Citations: 
    • An Unequivocal Example of Cysteine Proteinase Activity Affected by Multiple Electrostatic Interactions
      Taylor, M.A.,Baker, K.C.,Connerton, I.F.,Cummings, N.J.,Harris, G.W.,Henderson, I.M.,Jones, S.T.,Pickersgill, R.W.,Sumner, I.G.,Warwicker, J.,al., et
      (1994) Protein Eng. 7: 1267
    • Nucleotide Sequence and Expression in Escherichia Coli of Cdnas Encoding Papaya Proteinase Omega from Carica Papaya
      Revell, D.F.,Cummings, N.J.,Baker, K.C.,Collins, M.E.,Taylor, M.A.,Sumner, I.G.,Pickersgill, R.W.,Connerton, I.F.,Goodenough, P.W.
      (1993) Gene 127: 221
    • Rapid Kinetics Studies and Structural Determination of a Cysteine Proteinase Mutant Implies that Residue Asp 158 in Caricain Has a Major Effect Upon the Ability of the Active Site Histidine to Protonate a Dipyridyl Probe
      Katerelos, A.,Goodenough, P.W.
      () TO BE PUBLISHED --: --
    • Active Papain Renatured and Processed from Insoluble Recombinant Propapain Expressed in Escherichia Coli
      Taylor, M.A.,Pratt, K.A.,Revell, D.F.,Baker, K.C.,Sumner, I.G.,Goodenough, P.W.
      (1992) Protein Eng. 5: 455


    Organizational Affiliation

    Institute of Food Research, Reading Laboratory, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CARICAIN
A
216Carica papayaEC: 3.4.22.30
Find proteins for P10056 (Carica papaya)
Go to UniProtKB:  P10056
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
E64
Query on E64

Download SDF File 
Download CCD File 
A
N-[N-[1-HYDROXYCARBOXYETHYL-CARBONYL]LEUCYLAMINO-BUTYL]-GUANIDINE
C15 H30 N5 O5
QPQNJAXBPHVASB-QWRGUYRKSA-O
 Ligand Interaction
EOH
Query on EOH

Download SDF File 
Download CCD File 
A
ETHANOL
C2 H6 O
LFQSCWFLJHTTHZ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.193 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 53.450α = 90.00
b = 65.330β = 111.60
c = 64.370γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1996-05-04 
  • Released Date: 1997-01-11 
  • Deposition Author(s): Katerelos, N.A.

Revision History 

  • Version 1.0: 1997-01-11
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance