4GQW

Crystal structure of CBS-pair protein, CBSX1 (loop deletion) from Arabidopsis thaliana


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.201 Å
  • R-Value Free: 0.311 
  • R-Value Work: 0.258 

wwPDB Validation 3D Report Full Report


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Literature

Crystal structure of CBSX1 (loop deletion)

Jeong, B.C.Park, S.H.Yoo, K.S.Shin, J.S.Song, H.K.

(2012) Biochem.Biophys.Res.Commun. --: --

  • DOI: 10.1016/j.bbrc.2012.10.139
  • Primary Citation of Related Structures:  4GQV

  • PubMed Abstract: 
  • The single cystathionine β-synthase (CBS) pair proteins from Arabidopsis thaliana have been identified as being a redox regulator of the thioredoxin (Trx) system. CBSX1 and CBSX2, which are two of the six Arabidopsis cystathione β-synthase domain-con ...

    The single cystathionine β-synthase (CBS) pair proteins from Arabidopsis thaliana have been identified as being a redox regulator of the thioredoxin (Trx) system. CBSX1 and CBSX2, which are two of the six Arabidopsis cystathione β-synthase domain-containing proteins that contain only a single CBS pair, have close sequence similarity. Recently, the crystal structure of CBSX2 was determined and a significant portion of the internal region was disordered. In this study, crystal structures of full-length CBSX1 and the internal loop deleted (Δloop) form are reported at resolutions of 2.4 and 2.2Å, respectively. The structures of CBSX1 show that they form anti-parallel dimers along their central twofold axis and have a unique ∼155° bend along the side. This is different from the angle of CBSX2, which is suggestive of the flexible nature of the relative angle between the monomers. The biochemical data that were obtained using the deletion as well as point mutants of CBSX1 confirmed the importance of AMP-ligand binding in terms of enhancing Trx activity.


    Organizational Affiliation

    School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CBS domain-containing protein CBSX1, chloroplastic
A
152Arabidopsis thalianaGene Names: CBSX1 (CDCP2)
Find proteins for O23193 (Arabidopsis thaliana)
Go to UniProtKB:  O23193
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.201 Å
  • R-Value Free: 0.311 
  • R-Value Work: 0.258 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 55.818α = 90.00
b = 55.818β = 90.00
c = 83.003γ = 120.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHASESphasing
HKL-2000data reduction
HKL-2000data collection
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-01-16
    Type: Initial release