Solution structure of the X4 protein coded by the SARS related coronavirus reveals an immunoglobulin like fold and suggests a binding activity to integrin I domains.
Haenel, K., Stangler, T., Stoldt, M., Willbold, D.(2006) J Biomed Sci 13: 281-293
- PubMed: 16328780 
- DOI: 10.1007/s11373-005-9043-9
- Primary Citation of Related Structures:  
1YO4 - PubMed Abstract: 
The SARS related Coronavirus genome contains a variety of novel accessory genes. One of these, called ORF7a or ORF8, code for a protein, known as 7a, U122 or X4. We set out to determine the three-dimensional structure of the soluble ectodomain of this type-I transmembrane protein by nuclear magnetic resonance spectroscopy ...