Crystal Structure of the CBS domain pair of protein MJ0100 in complex with 5 -methylthioadenosine and S-adenosyl-L-methionine.

Experimental Data Snapshot

  • Resolution: 2.91 Å
  • R-Value Free: 0.334 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.239 

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Binding of S-Methyl-5'-Thioadenosine and S-Adenosyl-l-Methionine to Protein MJ0100 Triggers an Open-to-Closed Conformational Change in Its CBS Motif Pair.

Lucas, M.Encinar, J.A.Arribas, E.A.Oyenarte, I.Garcia, I.G.Kortazar, D.Fernandez, J.A.Mato, J.M.Martinez-Chantar, M.L.Martinez-Cruz, L.A.

(2010) J Mol Biol 396: 800-820

  • DOI: https://doi.org/10.1016/j.jmb.2009.12.012
  • Primary Citation of Related Structures:  
    3KPB, 3KPC, 3KPD

  • PubMed Abstract: 

    Cystathionine beta-synthase (CBS) domains are small motifs that are present in proteins with completely different functions. Several genetic diseases in humans have been associated with mutations in their sequence, which has made them promising targets for rational drug design. The protein MJ0100 from Methanocaldococcus jannaschii includes a DUF39 domain of so far unknown function and a CBS domain pair (Bateman domain) at its C-terminus. This work presents the crystallographic analysis of four different states of the CBS motif pair of MJ0100 in complex with different numbers of S-adenosyl-L-methionine (SAM) and S-methyl-5'-thioadenosine (MTA) ligands, providing evidence that ligand-induced conformational reorganization of Bateman domain dimers could be an important regulatory mechanism. These observations are in contrast to what is known from most of the other Bateman domain structures but are supported by recent studies on the magnesium transporter MgtE. Our structures represent the first example of a CBS domain protein complexed with SAM and/or MTA and might provide a structural basis for understanding the molecular mechanisms regulated by SAM upon binding to the C-terminal domain of human CBS, whose structure remains unknown.

  • Organizational Affiliation

    Unidad de Biología Estructural, CIC bioGUNE, Parque Tecnológico de Bizkaia, Ed. 800, 48160-Derio, Bizkaia, Spain.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Uncharacterized protein MJ0100
A, B, C, D
122Methanocaldococcus jannaschiiMutation(s): 0 
Gene Names: MJ0100
Find proteins for Q57564 (Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440))
Explore Q57564 
Go to UniProtKB:  Q57564
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ57564
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.91 Å
  • R-Value Free: 0.334 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.239 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.671α = 90
b = 165.794β = 90
c = 122.997γ = 90
Software Package:
Software NamePurpose

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2010-01-12
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2024-02-21
    Changes: Data collection, Database references, Derived calculations