1MOM

CRYSTAL STRUCTURE OF MOMORDIN, A TYPE I RIBOSOME INACTIVATING PROTEIN FROM THE SEEDS OF MOMORDICA CHARANTIA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.16 Å

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structure of momordin, a type I ribosome inactivating protein from the seeds of Momordica charantia.

Husain, J.Tickle, I.J.Wood, S.P.

(1994) FEBS Lett. 342: 154-158


  • PubMed Abstract: 
  • A type I ribosome-inactivating protein, extracted and purified from M. charantia seeds, was crystallised by vapour diffusion with polyethylene glycol at pH 7.2. X-ray data were collected to 2.1 A resolution and the structure solved by molecular repla ...

    A type I ribosome-inactivating protein, extracted and purified from M. charantia seeds, was crystallised by vapour diffusion with polyethylene glycol at pH 7.2. X-ray data were collected to 2.1 A resolution and the structure solved by molecular replacement using the A-chain coordinates of ricin. The overall fold of the protein is similar to ricin but there are differences in secondary structure, on the surface and in the active site cleft. These differences are probably due in part to the evolution of the protein without a B-chain partner. The most extensive reorganisation occurs at the C-terminus whereas Tyr70 shows the greatest change in the active site cleft.


    Organizational Affiliation

    Department of Crystallography, Birkbeck College, London, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MOMORDIN
A
246Momordica charantiaEC: 3.2.2.22
Find proteins for P16094 (Momordica charantia)
Go to UniProtKB:  P16094
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.16 Å
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 131.170α = 90.00
b = 131.170β = 90.00
c = 40.750γ = 120.00
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORphasing
RESTRAINrefinement
X-PLORmodel building
PROLSQrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-05-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations, Other