PMID- 30142967 OWN - NLM STAT- MEDLINE DCOM- 20181211 LR - 20181211 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 19 IP - 9 DP - 2018 Aug 23 TI - The Effect of Ca(2+), Lobe-Specificity, and CaMKII on CaM Binding to Na(V)1.1. LID - 10.3390/ijms19092495 [doi] LID - 2495 AB - Calmodulin (CaM) is well known as an activator of calcium/calmodulin-dependent protein kinase II (CaMKII). Voltage-gated sodium channels (VGSCs) are basic signaling molecules in excitable cells and are crucial molecular targets for nervous system agents. However, the way in which Ca(2+)/CaM/CaMKII cascade modulates Na(V)1.1 IQ (isoleucine and glutamine) domain of VGSCs remains obscure. In this study, the binding of CaM, its mutants at calcium binding sites (CaM(12), CaM(34), and CaM(1234)), and truncated proteins (N-lobe and C-lobe) to Na(V)1.1 IQ domain were detected by pull-down assay. Our data showed that the binding of Ca(2+)/CaM to the Na(V)1.1 IQ was concentration-dependent. ApoCaM (Ca(2+)-free form of calmodulin) bound to Na(V)1.1 IQ domain preferentially more than Ca(2+)/CaM. Additionally, the C-lobe of CaM was the predominant domain involved in apoCaM binding to Na(V)1.1 IQ domain. By contrast, the N-lobe of CaM was predominant in the binding of Ca(2+)/CaM to Na(V)1.1 IQ domain. Moreover, CaMKII-mediated phosphorylation increased the binding of Ca(2+)/CaM to Na(V)1.1 IQ domain due to one or several phosphorylation sites in T1909, S1918, and T1934 of Na(V)1.1 IQ domain. This study provides novel mechanisms for the modulation of Na(V)1.1 by the Ca(2+)/CaM/CaMKII axis. For the first time, we uncover the effect of Ca(2+), lobe-specificity and CaMKII on CaM binding to Na(V)1.1. FAU - Li, Jianing AU - Li J AD - Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110122, China. Ariene77687@outlook.com. FAU - Yu, Zhiyi AU - Yu Z AD - Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA. zhiyi7566@live.cn. FAU - Xu, Jianjun AU - Xu J AD - Department of Physiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan. jjxuk@m3.kufm.kagoshima-u.ac.jp. FAU - Feng, Rui AU - Feng R AD - Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110122, China. fengrui527@163.com. FAU - Gao, Qinghua AU - Gao Q AD - Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110122, China. rwygao@m.kufm.kagoshima-u.ac.jp. AD - Department of Physiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan. rwygao@m.kufm.kagoshima-u.ac.jp. FAU - Boczek, Tomasz AU - Boczek T AUID- ORCID: 0000-0002-7654-9011 AD - Department of Ophthalmology, Stanford University School of Medicine, Palo Alto, CA 94305, USA. tomasz.boczek@umed.lodz.pl. FAU - Liu, Junyan AU - Liu J AD - Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110122, China. m18602444860_1@163.com. FAU - Li, Zhi AU - Li Z AD - Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110122, China. lizhi0824@live.com. FAU - Wang, Qianhui AU - Wang Q AD - Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110122, China. WQH91225@163.com. FAU - Lei, Ming AU - Lei M AD - Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110122, China. leiming@swmu.edu.cn. FAU - Gong, Jian AU - Gong J AD - Department of Clinical Pharmacy, School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China. fanxing1230@163.com. FAU - Hu, Huiyuan AU - Hu H AD - Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110122, China. hyhu@cmu.edu.cn. FAU - Minobe, Etsuko AU - Minobe E AUID- ORCID: 0000-0003-1351-0440 AD - Department of Physiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan. mimiben@m3.kufm.kagoshima-u.ac.jp. FAU - Ji, Hong-Long AU - Ji HL AUID- ORCID: 0000-0002-3228-7144 AD - Department of Cellular and Molecular Biology, University of Texas Health Science Center at Tyler, Tyler, TX 75708, USA. james.ji@uthct.edu. FAU - Kameyama, Masaki AU - Kameyama M AUID- ORCID: 0000-0002-0083-7295 AD - Department of Physiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan. kame@m.kufm.kagoshima-u.ac.jp. FAU - Guo, Feng AU - Guo F AD - Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110122, China. blueforest611@hotmail.com. LA - eng GR - R01 HL134828/HL/NHLBI NIH HHS/United States PT - Journal Article DEP - 20180823 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Calmodulin) RN - 0 (NAV1.1 Voltage-Gated Sodium Channel) RN - 0 (Recombinant Fusion Proteins) RN - 0 (SCN1A protein, human) RN - EC 2.5.1.18 (Glutathione Transferase) RN - EC 2.7.11.17 (Calcium-Calmodulin-Dependent Protein Kinase Type 2) RN - SY7Q814VUP (Calcium) SB - IM MH - Amino Acid Sequence MH - Binding Sites MH - Calcium/*chemistry/metabolism MH - Calcium-Calmodulin-Dependent Protein Kinase Type 2/*chemistry/genetics/metabolism MH - Calmodulin/*chemistry/genetics/metabolism MH - Cloning, Molecular MH - Crystallography, X-Ray MH - Escherichia coli/genetics/metabolism MH - Gene Expression MH - Genetic Vectors/chemistry/metabolism MH - Glutathione Transferase/chemistry/genetics/metabolism MH - HEK293 Cells MH - Humans MH - Kinetics MH - Molecular Docking Simulation MH - Mutation MH - NAV1.1 Voltage-Gated Sodium Channel/*chemistry/genetics/metabolism MH - Phosphorylation MH - Protein Binding MH - Protein Conformation, alpha-Helical MH - Protein Conformation, beta-Strand MH - Protein Interaction Domains and Motifs MH - Recombinant Fusion Proteins/chemistry/genetics/metabolism MH - Thermodynamics PMC - PMC6165294 OTO - NOTNLM OT - Ca2+ OT - CaM OT - CaMKII OT - IQ domain OT - NaV1.1 COIS- The authors declare no conflict of interest. EDAT- 2018/08/26 06:00 MHDA- 2018/12/12 06:00 PMCR- 2018/09/01 CRDT- 2018/08/26 06:00 PHST- 2018/07/04 00:00 [received] PHST- 2018/08/06 00:00 [revised] PHST- 2018/08/13 00:00 [accepted] PHST- 2018/08/26 06:00 [entrez] PHST- 2018/08/26 06:00 [pubmed] PHST- 2018/12/12 06:00 [medline] PHST- 2018/09/01 00:00 [pmc-release] AID - ijms19092495 [pii] AID - ijms-19-02495 [pii] AID - 10.3390/ijms19092495 [doi] PST - epublish SO - Int J Mol Sci. 2018 Aug 23;19(9):2495. doi: 10.3390/ijms19092495.