Biophysical Society 61st Annual Meeting | Program Guide

494-Pos Board B259 A METHOD FOR VALIDATING MUTATIONS ASSOCIATED WITH MALIG- NANT HYPERTHERMIA USING CRISPR/CAS9 AND DUAL INTEGRASE CAS- SETTE EXCHANGE. Kevin J. De Leon , Shane Antrobus, Paul Denney Allen, Isabelle Marty, David Segal 495-Pos Board B260 ROLE OF STIM1 AND ORAI1 IN THE FORMATION OF TUBULAR AGGRE- GATES IN AGEING SKELETAL MUSCLE FIBERS. Claudia Pecorai, Antonio Michelucci, Laura Pietrangelo, Feliciano Protasi, Simona Boncompagni 496-Pos Board B261 MITSUGUMIN 53 REGULATES EXTRACELLULAR CA 2+ ENTRY AND INTRA- CELLULAR CA 2+ RELEASE VIA ORAI1 AND RYR1 IN SKELETAL MUSCLE.  Mi Kyoung Ahn , Keon Jin Lee, Chuanxi Cai, Mei Huang, Chung-Hyun Cho, Jianjie Ma, Eun Hui Lee 497-Pos Board B262 LOCALIZATION OF JUNCTOPHILIN-1 AT THE JUNCTIONAL SARCOPLAS- MIC RETICULUM REQUIRES A SEQUENCE IN THE TRANSMEMBRANE DOMAIN. Daniela Rossi , Angela Maria Scarcella, Stefania Lorenzini, Enea Liguori, Mirko Messa, Pietro De Camilli, Vincenzo Sorrentino 498-Pos Board B263 INTERACTION OF JUNCTOPHILINS AND THE C-TERMINUS OF CAV1.1 SUB- UNITS REGULATES LOCALIZATION AND FUNCTION OF L-TYPE CALCIUM CHANNELS IN SKELETAL MUSCLE. Tsutomu Nakada , Toshihide Kashihara, Mitsuhiko Yamada 499-Pos Board B264 DYNAMICS OF TRIAD ORGANIZATION. Muriel Sébastien, Perrine Teyssier, Julie Brocard, Eric Denarier, Isabelle Marty , Julien Fauré 500-Pos Board B265 ASSESSMENT OF CA 2+ SENSITIVITY OF SK CHANNELS IN RAT VENTRICULAR CARDIOMYOCYTES USING INTRINSIC CA 2+ CYCLING MACHINERY. Luliia Polina , Radmila Terentyeva, Karim Roder, Gideon Koren, Jin O-Uchi, Dmitry Terentyev 501-Pos Board B266 MODIFIED CALCIUM HOMEOSTASIS IN AGED MOUSE SKELETAL MUS- CLE. László Csernoch , János Fodor, Dána Al-Gaadi, Tamás Czirják, Tamás Oláh, Beatrix Dienes, Péter Szentesi 502-Pos Board B267 SHEAR STRESS INDUCES TRANSVERSE CA 2+ WAVES VIA AUTOCRINE AC- TIVATION OF P2X PURINOCEPTORS IN RAT ATRIAL MYOCYTES. Joon-Chul Kim, Sun-Hee Woo 503-Pos Board B268 OPTICAL MAPPING IN RAT MODELS OF ATRIAL DILATION. Samantha Cannazzaro , Claudia Crocini, Marina Scardigli, Raffaele Coppini, Ping Yan, Leslie M. Loew, Chiara Tesi, Elisabetta Cerbai, Francesco S. Pavone, Cor- rado Poggesi, Leonardo Sacconi, Cecilia Ferrantini 504-Pos Board B269 EPAC2-RAP1 SIGNALING INFLUENCES REACTIVE OXYGEN SPECIES PRO- DUCTION AND SUSCEPTIBILITY TO CARDIAC ARRHYTHMIAS. Zhaokang Yang, Hannah M. Kirton , Moza Al-Owais, Chris Peers, Derek S. Steele 505-Pos Board B270 GENERATION AND CHARACTERIZATION OF A HUMAN IPSC CARDIOMYO- CYTE MODEL OF TROPONIN T I79N LINKED HYPERTROPHIC CARDIO- MYOPATHY. Lili Wang , Dmytro Oleksandrovych Kryshtal, Kyungsoo Kim, Shan Parikh, Kevin Richard Bersell, Jose R. Pinto, Huan He, Bjorn Christian Knollmann 506-Pos Board B271 CARDIAC ELECTROMECHANICAL COUPLING MODEL OF MYOCARDIAL CONTRACTILE FUNCTION UNDER ISCHEMIC CONDITIONS. Yasser Aboelkassem , Natalia Trayanova

482-Pos Board B247 ANTIDEPRESSANT DRUGS CITALOPRAM AND ESCITALOPRAM BUT NOT PAROXETINE INDUCE ARRYTHMOGENIC SARCOPLASMIC RETICULUM CALCIUM RELEASE. Daniel Blackwell , Björn Knollmann 483-Pos Board B248 THE INTERPLAY BETWEEN LENGTH-DEPENDENT CALCIUM AFFINITY OF TROPONIN AND X-ROS SIGNALING ON MYOPLASMIC CALCIUM LEVELS IN HEART. Sarita Limbu, Benjamin L. Prosser, W. Jonathan Lederer, M. Saleet Jafri 484-Pos Board B249 MITOCHONDRIAL CA 2+ UPTAKE AND SUPEROXIDE GENERATION REGU- LATES ANGIOTENSIN II-INDUCED PROLIFERATION IN NEONATAL CARDIAC FIBROBLASTS.  Jin O-Uchi , Deming Fu, Jyotsna Mishra, Bong Sook Jhun, Shey-Shing Sheu 485-Pos Board B250 TRPV4 ENHANCES CARDIOMYOCYTE CALCIUM TRANSIENTS AND CAR- DIAC CONTRACTILITY FOLLOWING HYPOOSMOTIC STRESS AND ISCH- EMIA-REPERFUSION. John L. Jones, Deborah Peana, Michelle D. Lambert, Timothy L. Domeier 486-Pos Board B251 CHARACTERIZATION OF INTRACELLULAR SODIUM HOMEOSTASIS IN MURINE ATRIAL MYOCYTES. Libet Garber , W. Jonathan Lederer, Maura Greiser 487-Pos Board B252 Education Travel Awardee GENETIC ABLATION OF FIBROBLAST MITOCHONDRIAL CALCIUM UPTAKE INCREASES MYOFIBROBLAST TRANSDIFFERENTIATION AND EXACERBATES FIBROSIS IN MYOCARDIAL INFARCTION. Alyssa A. Lombardi , Ehtesham Arif, Timothy S. Luongo, John W. Elrod 488-Pos Board B253 GAIN-OF-FUNCTION MUTATION IN RYANODINE RECEPTOR TYPE 1 MOD- ULATES MURINE THYMOCYTE CALCIUM SIGNALING AND AUTOIMMUNE RESPONSE IN MICE. Lukun Yang, Athena Soulika, Lillian Cruz-Orengo, Paul D. Allen, Alla F. Fomina 489-Pos Board B254 REGULATION OF CARDIAC PACEMAKER ACTIVITY BY PDE4 ISO- FORMS. Delphine Mika , Ana Maria Gomez, Marco Conti, Rodolphe Fischmeister, Grégoire Vandecasteele 490-Pos Board B255 FUNCTIONAL ROLE OF TRPC1 CHANNELS IN NEONATAL CARDIOMYO- CYTES. Ahmad A. Azmi, Chris Hunter, Hu Qinghua, Frank B. Sachse Excitation-Contraction Coupling (Boards B256–B278) 491-Pos Board B256 PROBING THE INTER-SUBUNIT/SUBDOMAIN INTERACTIONS RELEVANT TO DISEASE MUTATIONS IN THE N-TERMINAL DOMAIN OF RYANODINE RECEPTORS BY MOLECULAR DYNAMICS SIMULATION. Wenjun Zheng 492-Pos Board B257 GENOTYPE-PHENOTYPE CORRELATIONS OF THE CENTRAL CORE DISEASE MUTATIONS IN THE C-TERMINAL REGION OF THE RYR1 CHANNEL.  Takashi Murayama , Nagomi Kurebayashi, Haruo Ogawa, Toshiko Yamazawa, Takashi Sakurai 493-Pos Board B258 THE ROLE OF TRIC CHANNELS IN SR COUNTERCURRENT DURING SR CA 2+ RELEASE AND SERCA RE-UPTAKE. Vilmos Zsolnay, Claudio Berti, Michael Fill, Dirk Gillespie

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