Primary Citation of Related Structures:   1BY2
PubMed Abstract: 
Scavenger receptor cysteine-rich (SRCR) domains are found widely in cell surface molecules and in some secreted proteins, where they are thought to mediate ligand binding. We have determined the crystal structure at 2.0 A resolution of the SRCR domain of Mac-2 binding protein (M2BP), a tumor-associated antigen and matrix protein ...
Scavenger receptor cysteine-rich (SRCR) domains are found widely in cell surface molecules and in some secreted proteins, where they are thought to mediate ligand binding. We have determined the crystal structure at 2.0 A resolution of the SRCR domain of Mac-2 binding protein (M2BP), a tumor-associated antigen and matrix protein. The structure reveals a curved six-stranded beta-sheet cradling an alpha-helix. Structure-based sequence alignment demonstrates that the M2BP SRCR domain is a valid template for the entire SRCR protein superfamily. This allows an interpretation of previous mutagenesis data on ligand binding to the lymphocyte receptor CD6.
Related Citations: 
Mac-2 Binding Protein is a Cell-Adhesive Protein of the Extracellular Matrix which Self-Assembles Into Ring-Like Structures and Binds Beta1 Integrins, Collagens and Fibronectin Sasaki, T., Brakebusch, C., Engel, J., Timpl, R. (1998) EMBO J 17: 1606
The Srcr Superfamily: A Family Reminiscent of the Ig Superfamily Resnick, D., Pearson, A., Krieger, M. (1994) Trends Biochem Sci 19: 5
Organizational Affiliation: 
Department of Crystallography, Birkbeck College, University of London, UK.