1OSZ

MHC CLASS I H-2KB HEAVY CHAIN COMPLEXED WITH BETA-2 MICROGLOBULIN AND AN (L4V) MUTANT OF THE VESICULAR STOMATITIS VIRUS NUCLEOPROTEIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.248 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Differential thymic selection outcomes stimulated by focal structural alteration in peptide/major histocompatibility complex ligands.

Ghendler, Y.Teng, M.K.Liu, J.H.Witte, T.Liu, J.Kim, K.S.Kern, P.Chang, H.C.Wang, J.H.Reinherz, E.L.

(1998) Proc.Natl.Acad.Sci.USA 95: 10061-10066


  • PubMed Abstract: 
  • The T lineage repertoire is shaped by T cell receptor (TCR)-dependent positive and negative thymic selection processes. Using TCR-transgenic (N15tg) beta2-microglobulin-deficient (beta2m-/-) RAG-2(-/-) H-2(b) mice specific for the VSV8 (RGYVYQGL) oct ...

    The T lineage repertoire is shaped by T cell receptor (TCR)-dependent positive and negative thymic selection processes. Using TCR-transgenic (N15tg) beta2-microglobulin-deficient (beta2m-/-) RAG-2(-/-) H-2(b) mice specific for the VSV8 (RGYVYQGL) octapeptide bound to Kb, we identified a single weak agonist peptide variant V4L (L4) inducing phenotypic and functional T cell maturation. The cognate VSV8 peptide, in contrast, triggers negative selection. The crystal structure of L4/Kb was determined and refined to 2.1 A for comparison with the VSV8/Kb structure at similar resolution. Aside from changes on the p4 side chain of L4 and the resulting alteration of the exposed Kb Lys-66 side chain, these two structures are essentially identical. Hence, a given TCR recognizes subtle distinctions between highly related ligands, resulting in dramatically different selection outcomes. Based on these finding and the recent structural elucidation of the N15-VSV8/Kb complex, moreover, it appears that the germ-line Valpha repertoire contributes in a significant way to positive selection.


    Organizational Affiliation

    Laboratory of Immunobiology, Dana-Farber Cancer Institute and Department of Medicine, Harvard Medical School, Boston, MA 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MHC CLASS I H-2KB HEAVY CHAIN
A
274Mus musculusMutation(s): 0 
Gene Names: H2-K1 (H2-K)
Find proteins for P01901 (Mus musculus)
Go to UniProtKB:  P01901
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
BETA-2 MICROGLOBULIN
B
99Mus musculusMutation(s): 0 
Gene Names: B2m
Find proteins for P01887 (Mus musculus)
Go to UniProtKB:  P01887
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
VESICULAR STOMATITIS VIRUS NUCLEOPROTEIN
C
8N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.248 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 136.700α = 90.00
b = 88.000β = 90.00
c = 45.300γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-01-13
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance