2OCT

Stefin B (Cystatin B) tetramer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.2 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

  • 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 intermole ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cystatin B
A, B
98Homo sapiensMutation(s): 2 
Gene Names: CSTB (CST6, STFB)
Find proteins for P04080 (Homo sapiens)
Go to Gene View: CSTB
Go to UniProtKB:  P04080
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.176 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 120.123α = 90.00
b = 30.857β = 95.81
c = 51.349γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
HKL-2000data collection
SCALEPACKdata scaling
AMoREphasing
SHELXL-97refinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-04-03
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance