1nez
From Proteopedia
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The Crystal Structure of a TL/CD8aa Complex at 2.1A resolution:Implications for Memory T cell Generation, Co-receptor Preference and Affinity
Overview
TL is a nonclassical MHC class I molecule that modulates T cell activation, through relatively high-affinity interaction with CD8alphaalpha. To, investigate how the TL/CD8alphaalpha interaction influences TCR signaling, we characterized the structure of the TL/CD8alphaalpha complex using X-ray, crystallography. Unlike antigen-presenting molecules, the TL, antigen-binding groove is occluded by specific conformational changes., This feature eliminates antigen presentation, severely hampers direct TCR, recognition, and prevents TL from participating in the TCR activation, complex. At the same time, the TL/CD8alphaalpha interaction is, strengthened through subtle structure changes in the TL alpha3 domain., Thus, TL functions to sequester and redirect CD8alphaalpha away from the, TCR, modifying lck-dependent signaling.
About this Structure
1NEZ is a Protein complex structure of sequences from [1] with NAG as ligand. Full crystallographic information is available from OCA.
Reference
The crystal structure of a TL/CD8alphaalpha complex at 2.1 A resolution: implications for modulation of T cell activation and memory., Liu Y, Xiong Y, Naidenko OV, Liu JH, Zhang R, Joachimiak A, Kronenberg M, Cheroutre H, Reinherz EL, Wang JH, Immunity. 2003 Feb;18(2):205-15. PMID:12594948
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