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Complex assembly, crystallization and preliminary X-ray crystallographic analysis of the bovine CD8αα-BoLA-2*02201 complex



Complex assembly, crystallization and preliminary X-ray crystallographic analysis of the bovine CD8αα-BoLA-2*02201 complex



Acta Crystallographica. Section F Structural Biology Communications 70(Pt 6): 742-746



In order to clarify the structural characteristics of the bovine MHC class I molecule (BoLA-I) complexed with CD8αα (CD8αα-BoLA-I), bovine CD8αα, BoLA-I (BoLA-2*02201) and β2m were expressed and purified, and were then assembled with a peptide derived from Foot-and-mouth disease virus (FMDV-VP1YY9) and crystallized. The crystal diffracted to 1.7 Å resolution and belonged to space group P21, with unit-cell parameters a=53.9, b=103.8, c=61.8 Å, α=γ=90, β=96°. The asymmetric unit contained one complex, with a Matthews coefficient of 2.41 Å3 Da(-1) and a solvent content of 48.9%. The rotation-function Z-score and translation-function Z-score for molecular replacement were 3.4 and 8.9, respectively. In addition, SDS-PAGE analysis of CD8αα-BoLA-I crystals showed three bands corresponding to the molecular weights of BoLA-I heavy chain, β2m and CD8α. The structure of the CD8αα-BoLA-I complex should be helpful in obtaining insight into the interaction between bovine CD8αα and MHC class I molecules. Structure determination of BoLA-2*02201-FMDV-VP1YY9 will be useful in the design of vaccines for foot-and-mouth disease.

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Accession: 052261361

Download citation: RISBibTeXText

PMID: 24915083

DOI: 10.1107/s2053230x14008838


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