Crystal structure of a soluble form of the human T cell coreceptor CD8 at 2.6 A resolution.
Leahy, D.J., Axel, R., Hendrickson, W.A.(1992) Cell 68: 1145-1162
- PubMed: 1547508
- DOI: https://doi.org/10.1016/0092-8674(92)90085-q
- Primary Citation of Related Structures:
1CD8 - PubMed Abstract:
A secreted fragment of the extracellular portion of human CD8 alpha has been expressed in CHO cells, and a deglycosylated and proteolyzed form of this fragment has been crystallized. We report here the crystal structure of this fragment as refined at 2.6 A resolution. The structure was solved by molecular replacement using a superposition of ten variable domains from immunoglobulin light chains as the search model. Only the N-terminal 114 amino acids of CD8 alpha are visible in the electron density maps. The domain formed by these residues possesses a fold typical of immunoglobulin variable domains and associates to form Fv-like homodimers.
Organizational Affiliation:
Department of Biochemistry and Molecular Biophysics, Columbia University, New York, New York 10032.