Download MendeleySolution structure of the extended neuronal nitric oxide synthase PDZ domain complexed with an associated peptide.
Tochio, H., Zhang, Q., Mandal, P., Li, M., Zhang, M.(1999) Nat Struct Biol 6: 417-421
- PubMed: 10331866
- DOI: https://doi.org/10.1038/8216
- Primary Citation of Related Structures:
1B8Q - PubMed Abstract:
The PDZ domain of neuronal nitric oxide synthase (nNOS) functions as a scaffold for organizing the signal transduction complex of the enzyme. The NMR structure of a complex composed of the nNOS PDZ domain and an associated peptide suggests that a two-stranded beta-sheet C-terminal to the canonical PDZ domain may mediate its interaction with the PDZ domains of postsynaptic density-95 and alpha-syntrophin. The structure also provides the molecular basis of recognition of Asp-X-Val-COOH peptides by the nNOS PDZ domain. The role of the C-terminal extension in Asp-X-Val-COOH peptide binding is investigated. Additionally, NMR studies further show that the Asp-X-Val-COOH peptide and a C-terminal peptide from a novel cytosolic protein named CAPON bind to the same pocket of the nNOS PDZ domain.
Organizational Affiliation:
Department of Biochemistry, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, PR China.
