Download MendeleyA High-Resolution Structure of the EF-Hand Domain of Human Polycystin-2.
Allen, M.D., Qamar, S., Vadivelu, M.K., Sandford, R.N., Bycroft, M.(2014) Protein Sci 23: 1301
- PubMed: 24990821
- DOI: https://doi.org/10.1002/pro.2513
- Primary Citation of Related Structures:
2Y4Q - PubMed Abstract:
Autosomal dominant polycystic kidney disease (ADPKD) affects over 1:1000 of the worldwide population and is caused by mutations in two genes, PKD1 and PKD2. PKD2 encodes a 968-amino acid membrane spanning protein, Polycystin-2 (PC-2), which is a member of the TRP ion channel family. The C-terminal cytoplasmic tail contains an EF-hand motif followed by a short coiled-coil domain. We have determined the structure of the EF-hand region of PC-2 using NMR spectroscopy. The use of different boundaries, compared with those used in previous studies, have enabled us to determine a high resolution structure and show that the EF hand motif forms a standard calcium-binding pocket. The affinity of this pocket for calcium has been measured and mutants that both decrease and increase its affinity for the metal ion have been created.
Organizational Affiliation:
MRC Laboratory of Molecular Biology, Hills Road, Cambridge, CB2 0QH, United Kingdom.
