2OCT

Stefin B (Cystatin B) tetramer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.180 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Essential role of proline isomerization in stefin B tetramer formation.

Jenko Kokalj, S.Guncar, G.Stern, I.Morgan, G.Rabzelj, S.Kenig, M.Staniforth, R.A.Waltho, J.P.Zerovnik, E.Turk, D.

(2007) J Mol Biol 366: 1569-1579

  • DOI: 10.1016/j.jmb.2006.12.025
  • Primary Citation of Related Structures:  
    2OCT

  • PubMed Abstract: 
  • Here we present the tetrameric structure of stefin B, which is the result of a process by which two domain-swapped dimers of stefin B are transformed into tetramers. The transformation involves a previously unidentified process of extensive intermolecular contacts, termed hand shaking, which occurs concurrently with trans to cis isomerization of proline 74 ...

    Here we present the tetrameric structure of stefin B, which is the result of a process by which two domain-swapped dimers of stefin B are transformed into tetramers. The transformation involves a previously unidentified process of extensive intermolecular contacts, termed hand shaking, which occurs concurrently with trans to cis isomerization of proline 74. This proline residue is widely conserved throughout the cystatin superfamily, a member of which, human cystatin C, is the key protein in cerebral amyloid angiopathy. These results are consistent with the hypothesis that isomerization of proline residues can play a decisive role in amyloidogenesis.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cystatin BA, B98Homo sapiensMutation(s): 3 
Gene Names: CSTBCST6STFB
UniProt & NIH Common Fund Data Resources
Find proteins for P04080 (Homo sapiens)
Explore P04080 
Go to UniProtKB:  P04080
PHAROS:  P04080
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.180 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 120.123α = 90
b = 30.857β = 95.81
c = 51.349γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
AMoREphasing
SHELXL-97refinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-04-03
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2021-10-20
    Changes: Database references