1Q69

Solution structure of T-cell surface glycoprotein CD8 alpha chain and Proto-oncogene tyrosine-protein kinase LCK fragments


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: The submitted conformer models are the 10 structures with the lowest energy. 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

A zinc clasp structure tethers Lck to T cell coreceptors CD4 and CD8.

Kim, P.W.Sun, Z.Y.Blacklow, S.C.Wagner, G.Eck, M.J.

(2003) Science 301: 1725-1728

  • DOI: https://doi.org/10.1126/science.1085643
  • Primary Citation of Related Structures:  
    1Q68, 1Q69

  • PubMed Abstract: 

    The T cell coreceptors CD4 and CD8 both associate via their cytoplasmic tails with the N-terminus of the Src-family tyrosine kinase Lck. These interactions require zinc and are critical for T cell development and activation. We examined the folding and solution structures of ternary CD4-Lck-Zn2+ and CD8alpha-Lck-Zn2+ complexes. The coreceptor tails and the Lck N-terminus are unstructured in isolation but assemble in the presence of zinc to form compactly folded heterodimeric domains. The cofolded complexes have similar "zinc clasp" cores that are augmented by distinct structural elements. A dileucine motif required for clathrin-mediated endocytosis of CD4 is masked by Lck.


  • Organizational Affiliation

    Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.


Macromolecules

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
T-cell surface glycoprotein CD8 alpha chain19Homo sapiensMutation(s): 0 
Gene Names: CD8A OR MAL
UniProt & NIH Common Fund Data Resources
Find proteins for P01732 (Homo sapiens)
Explore P01732 
Go to UniProtKB:  P01732
GTEx:  ENSG00000153563 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01732
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Proto-oncogene tyrosine-protein kinase LCK29Homo sapiensMutation(s): 1 
Gene Names: LCK
UniProt & NIH Common Fund Data Resources
Find proteins for P06239 (Homo sapiens)
Explore P06239 
Go to UniProtKB:  P06239
GTEx:  ENSG00000182866 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP06239
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
C [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: The submitted conformer models are the 10 structures with the lowest energy. 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-11-25
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-10-27
    Changes: Data collection, Database references, Derived calculations