Download MendeleyStructure of the First Pdz Domain of Human Psd-93.
Fiorentini, M., Nielsen, A.K., Kristensen, O., Kastrup, J.S., Gajhede, M.(2009) Acta Crystallogr Sect F Struct Biol Cryst Commun 65: 1254
- PubMed: 20054121
- DOI: https://doi.org/10.1107/S1744309109043267
- Primary Citation of Related Structures:
2WL7 - PubMed Abstract:
The crystal structure of the PDZ1 domain of human PSD-93 has been determined to 2.0 A resolution. The PDZ1 domain forms a crystallographic trimer that is also predicted to be stable in solution. The main contributions to the stabilization of the trimer seem to arise from interactions involving the PDZ1-PDZ2 linker region at the extreme C-terminus of PDZ1, implying that the oligomerization that is observed is not of biological significance in full-length PSD-93. Comparison of the structures of the binding cleft of PSD-93 PDZ1 with the previously reported structures of PSD-93 PDZ2 and PDZ3 as well as of the closely related human PSD-95 PDZ1 shows that they are very similar in terms of amino-acid composition. However, the cleft is significantly narrower in PSD-95. This could be part of the basis of peptide selectivity between PSD-93 PDZ1 and PSD-95 PDZ1.
Organizational Affiliation:
Biostructural Research, Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
