Structure of interleukin 16 resembles a PDZ domain with an occluded peptide binding site.
Muhlhahn, P., Zweckstetter, M., Georgescu, J., Ciosto, C., Renner, C., Lanzendorfer, M., Lang, K., Ambrosius, D., Baier, M., Kurth, R., Holak, T.A.(1998) Nat Struct Biol 5: 682-686
- PubMed: 9699630 
- DOI: 10.1038/1376
- Primary Citation of Related Structures:  
1I16 - PubMed Abstract: 
The structure of a folded core of IL-16 is similar to that of intracellular protein modules called PDZ domains. IL-16 is thus the first extracellular protein found to have a PDZ-like fold. However, it does not exhibit normal peptide binding properties of PDZ domains ...