PMID- 16481400 OWN - NLM STAT- MEDLINE DCOM- 20060808 LR - 20181113 IS - 1059-1524 (Print) IS - 1059-1524 (Linking) VI - 17 IP - 5 DP - 2006 May TI - Casein kinase II and calcineurin modulate TRPP function and ciliary localization. PG - 2200-11 AB - Cilia serve as sensory devices in a diversity of organisms and their defects contribute to many human diseases. In primary cilia of kidney cells, the transient receptor potential polycystin (TRPP) channels polycystin-1 (PC-1) and polycystin-2 (PC-2) act as a mechanosensitive channel, with defects resulting in autosomal dominant polycystic kidney disease. In sensory cilia of Caenorhabditis elegans male-specific neurons, the TRPPs LOV-1 and PKD-2 are required for mating behavior. The mechanisms regulating TRPP ciliary localization and function are largely unknown. We identified the regulatory subunit of the serine-threonine casein kinase II (CK2) as a binding partner of LOV-1 and human PC-1. CK2 and the calcineurin phosphatase TAX-6 modulate male mating behavior and PKD-2 ciliary localization. The phospho-defective mutant PKD-2(S534A) localizes to cilia, whereas a phospho-mimetic PKD-2(S534D) mutant is largely absent from cilia. Calcineurin is required for PKD-2 ciliary localization, but is not essential for ciliary gene expression, ciliogenesis, or localization of cilium structural components. This unanticipated function of calcineurin may be important for regulating ciliary protein localization. A dynamic phosphorylation-dephosphorylation cycle may represent a mechanism for modulating TRPP activity, cellular sensation, and ciliary protein localization. FAU - Hu, Jinghua AU - Hu J AD - Division of Pharmaceutical Sciences, University of Wisconsin, Madison, WI 53705, USA. FAU - Bae, Young-Kyung AU - Bae YK FAU - Knobel, Karla M AU - Knobel KM FAU - Barr, Maureen M AU - Barr MM LA - eng PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20060215 PL - United States TA - Mol Biol Cell JT - Molecular biology of the cell JID - 9201390 RN - 0 (Caenorhabditis elegans Proteins) RN - 0 (TRPP Cation Channels) RN - 0 (polycystic kidney disease 1 protein) RN - 0 (polycystic kidney disease 2 protein) RN - EC 2.7.11.1 (Casein Kinase II) RN - EC 3.1.3.- (calcineurin phosphatase) RN - EC 3.1.3.16 (Calcineurin) RN - EC 3.1.3.2 (Phosphoric Monoester Hydrolases) SB - IM MH - Amino Acid Sequence MH - Animals MH - Caenorhabditis elegans/anatomy & histology/chemistry/*metabolism MH - Caenorhabditis elegans Proteins/analysis/*metabolism MH - Calcineurin/*metabolism MH - Casein Kinase II/*metabolism MH - Cilia/chemistry/metabolism MH - Humans MH - Male MH - Molecular Sequence Data MH - Phosphoric Monoester Hydrolases/metabolism MH - Protein Interaction Mapping MH - Sexual Behavior, Animal MH - TRPP Cation Channels/analysis/*metabolism PMC - PMC1446073 EDAT- 2006/02/17 09:00 MHDA- 2006/08/09 09:00 PMCR- 2006/06/24 CRDT- 2006/02/17 09:00 PHST- 2006/02/17 09:00 [pubmed] PHST- 2006/08/09 09:00 [medline] PHST- 2006/02/17 09:00 [entrez] PHST- 2006/06/24 00:00 [pmc-release] AID - E05-10-0935 [pii] AID - 2200 [pii] AID - 10.1091/mbc.e05-10-0935 [doi] PST - ppublish SO - Mol Biol Cell. 2006 May;17(5):2200-11. doi: 10.1091/mbc.e05-10-0935. Epub 2006 Feb 15.