2MLL

MISTLETOE LECTIN I FROM VISCUM ALBUM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.319 
  • R-Value Work: 0.251 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Crystal structure of mistletoe lectin I from Viscum album.

Krauspenhaar, R.Eschenburg, S.Perbandt, M.Kornilov, V.Konareva, N.Mikailova, I.Stoeva, S.Wacker, R.Maier, T.Singh, T.Mikhailov, A.Voelter, W.Betzel, C.

(1999) Biochem Biophys Res Commun 257: 418-424

  • DOI: https://doi.org/10.1006/bbrc.1999.0470
  • Primary Citation of Related Structures:  
    1CE7, 2MLL

  • PubMed Abstract: 

    The crystal structure of the ribosome-inactivating protein (RIP) mistletoe lectin I (ML-I) from Viscum album has been solved by molecular replacement techniques. The structure has been refined to a crystallographic R-factor of 24.5% using X-ray diffraction data to 2.8 A resolution. The heterodimeric 63-kDa protein consists of a toxic A subunit which exhibits RNA-glycosidase activity and a galactose-specific lectin B subunit. The overall protein fold is similar to that of ricin from Ricinus communis; however, unlike ricin, ML-I is already medically applied as a component of a commercially available misteltoe extract with immunostimulating potency and for the treatment of human cancer. The three-dimensional structure reported here revealed structural details of this pharmaceutically important protein. The comparison to the structure of ricin gives more insights into the functional mechanism of this protein, provides structural details for further protein engineering studies, and may lead to the development of more effective therapeutic RIPs.


  • Organizational Affiliation

    Institute of Physiological Chemistry, University Hospital, c/o DESY, Build. 22a, Notkestrasse 85, Hamburg, 22603, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (RIBOSOME-INACTIVATING PROTEIN TYPE II)241Viscum albumMutation(s): 0 
UniProt
Find proteins for Q6ITZ3 (Viscum album)
Explore Q6ITZ3 
Go to UniProtKB:  Q6ITZ3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6ITZ3
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (RIBOSOME-INACTIVATING PROTEIN TYPE II)255Viscum albumMutation(s): 0 
UniProt
Find proteins for Q6ITZ3 (Viscum album)
Explore Q6ITZ3 
Go to UniProtKB:  Q6ITZ3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6ITZ3
Glycosylation
Glycosylation Sites: 2
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.319 
  • R-Value Work: 0.251 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 107.648α = 90
b = 107.648β = 90
c = 311.278γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
REFMACrefinement

Structure Validation

View Full Validation Report



Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2000-03-20
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Data collection, Derived calculations, Structure summary
  • Version 1.4: 2023-08-30
    Changes: Data collection, Database references, Refinement description, Structure summary