2026-10-07 REL RCSB INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY RCSB RCSB 2025-10-05 2026-10-07 2026-10-07 2026-10-07 Canadian Institutes of Health Research (CIHR) PJT-159601 Canada Chinese Scholarship Council 202306250027 China Zhang Y Yuchi Z Van Petegem F Ion channel, Complex, Activation, TRANSPORT PROTEIN-ISOMERASE-TOXIN complex Zhang Y Yuchi Z Van Petegem F To Be Published 0353 EMD-73035 consensus EM volume EMD-73031 focused EM volume

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EMD-73032 focused EM volume

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EMD-73033 focused EM volume

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EMD-73034 focused EM volume

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9yjv FULLOVERLAP EMDB EMD-73035 consensus EM volume EMDB EMD-73031 focused EM volume

using mask 1

EMDB EMD-73032 focused EM volume

using mask 2

EMDB EMD-73033 focused EM volume

using mask 3

EMDB EMD-73034 focused EM volume

using mask 4

EMDB EMD-73036 associated EM volume

Structure of RyR1-toxin complex

Complex between Ryanodine Receptor 1 and FKBP12.6 Complex between Ryanodine Receptor 1 and FKBP12.6 0 1 2 0.011 Ryanodine receptor 1 1 1 Oryctolagus cuniculus Peptidyl-prolyl cis-trans isomerase FKBP1B 1 2 Homo sapiens Ryanodine receptor 1 Oryctolagus cuniculus 0.5659086249999999 4 LEVO MGDGGEGEDEVQFLRTDDEVVLQCSATVLKEQLKLCLAAEGFGNRLCFLEPTSNAQNVPPDLAICCFTLEQSLSVRALQE MLANTVEAGVESSQGGGHRTLLYGHAILLRHAHSRMYLSCLTTSRSMTDKLAFDVGLQEDATGEACWWTMHPASKQRSEG EKVRVGDDLILVSVSSERYLHLSTASGELQVDASFMQTLWNMNPICSCCEEGYVTGGHVLRLFHGHMDECLTISAADSDD QRRLVYYEGGAVCTHARSLWRLEPLRISWSGSHLRWGQPLRIRHVTTGRYLALTEDQGLVVVDACKAHTKATSFCFRVSK EKLDTAPKRDVEGMGPPEIKYGESLCFVQHVASGLWLTYAAPDPKALRLGVLKKKAILHQEGHMDDALFLTRCQQEESQA ARMIHSTAGLYNQFIKGLDSFSGKPRGSGPPAGPALPIEAVILSLQDLIGYFEPPSEELQHEEKQSKLRSLRNRQSLFQE EGMLSLVLNCIDRLNVYTTAAHFAEYAGEEAAESWKEIVNLLYELLASLIRGNRANCALFSTNLDWVVSKLDRLEASSGI LEVLYCVLIESPEVLNIIQENHIKSIISLLDKHGRNHKVLDVLCSLCVCNGVAVRSNQDLITENLLPGRELLLQTNLINY VTSIRPNIFVGRAEGSTQYGKWYFEVMVDEVVPFLTAQATHLRVGWALTEGYSPYPGGGEGWGGNGVGDDLYSYGFDGLH LWTGHVARPVTSPGQHLLAPEDVVSCCLDLSVPSISFRINGCPVQGVFEAFNLDGLFFPVVSFSAGVKVRFLLGGRHGEF KFLPPPGYAPCHEAVLPRERLRLEPIKEYRREGPRGPHLVGPSRCLSHTDFVPCPVDTVQIVLPPHLERIREKLAENIHE LWALTRIEQGWTYGPVRDDNKRLHPCLVNFHSLPEPERNYNLQMSGETLKTLLALGCHVGMADEKAEDNLKKTKLPKTYM MSNGYKPAPLDLSHVRLTPAQTTLVDRLAENGHNVWARDRVAQGWSYSAVQDIPARRNPRLVPYRLLDEATKRSNRDSLC QAVRTLLGYGYNIEPPDQEPSQVENQSRWDRVRIFRAEKSYTVQSGRWYFEFEAVTTGEMRVGWARPELRPDVELGADEL AYVFNGHRGQRWHLGSEPFGRPWQSGDVVGCMIDLTENTIIFTLNGEVLMSDSGSETAFREIEIGDGFLPVCSLGPGQVG HLNLGQDVSSLRFFAICGLQEGFEPFAINMQRPVTTWFSKSLPQFEPVPPEHPHYEVARMDGTVDTPPCLRLAHRTWGSQ NSLVEMLFLRLSLPVQFHQHFRCTAGATPLAPPGLQPPAEDEARAAEPDPDYENLRRSAGGWGEAEGGKEGTAKEGTPGG TPQPGVEAQPVRAENEKDATTEKNKKRGFLFKAKKAAMMTQPPATPALPRLPHDVVPADNRDDPEIILNTTTYYYSVRVF AGQEPSCVWVGWVTPDYHQHDMNFDLSKVRAVTVTMGDEQGNVHSSLKCSNCYMVWGGDFVSPGQQGRISHTDLVIGCLV DLATGLMTFTANGKESNTFFQVEPNTKLFPAVFVLPTHQNVIQFELGKQKNIMPLSAAMFLSERKNPAPQCPPRLEVQML MPVSWSRMPNHFLQVETRRAGERLGWAVQCQDPLTMMALHIPEENRCMDILELSERLDLQRFHSHTLRLYRAVCALGNNR VAHALCSHVDQAQLLHALEDAHLPGPLRAGYYDLLISIHLESACRSRRSMLSEYIVPLTPETRAITLFPPGRKGGNARRH GLPGVGVTTSLRPPHHFSPPCFVAALPAAGVAEAPARLSPAIPLEALRDKALRMLGEAVRDGGQHARDPVGGSVEFQFVP VLKLVSTLLVMGIFGDEDVKQILKMIEPEVFTEEEEEEEEEEEEEEEEEEDEEEKEEDEEEEEKEDAEKEEEEAPEGEKE DLEEGLLQMKLPESVKLQMCNLLEYFCDQELQHRVESLAAFAERYVDKLQANQRSRYALLMRAFTMSAAETARRTREFRS PPQEQINMLLHFKDEADEEDCPLPEDIRQDLQDFHQDLLAHCGIQLEGEEEEPEEETSLSSRLRSLLETVRLVKKKEEKP EEELPAEEKKPQSLQELVSHMVVRWAQEDYVQSPELVRAMFSLLHRQYDGLGELLRALPRAYTISPSSVEDTMSLLECLG QIRSLLIVQMGPQEENLMIQSIGNIMNNKVFYQHPNLMRALGMHETVMEVMVNVLGGGETKEIRFPKMVTSCCRFLCYFC RISRQNQRSMFDHLSYLLENSGIGLGMQGSTPLDVAAASVIDNNELALALQEQDLEKVVSYLAGCGLQSCPMLLAKGYPD IGWNPCGGERYLDFLRFAVFVNGESVEENANVVVRLLIRKPECFGPALRGEGGSGLLAAIEEAIRISEDPARDGPGVRRD RRREHFGEEPPEENRVHLGHAIMSFYAALIDLLGRCAPEMHLIQAGKGEALRIRAILRSLVPLDDLVGIISLPLQIPTLG KDGALVQPKMSASFVPDHKASMVLFLDRVYGIENQDFLLHVLDVGFLPDMRAAASLDTATFSTTEMALALNRYLCLAVLP LITKCAPLFAGTEHRAIMVDSMLHTVYRLSRGRSLTKAQRDVIEDCLMALCRYIRPSMLQHLLRRLVFDVPILNEFAKMP LKLLTNHYERCWKYYCLPTGWANFGVTSEEELHLTRKLFWGIFDSLAHKKYDQELYRMAMPCLCAIAGALPPDYVDASYS SKAEKKATVDAEGNFDPRPVETLNVIIPEKLDSFINKFAEYTHEKWAFDKIQNNWSYGENVDEELKTHPMLRPYKTFSEK DKEIYRWPIKESLKAMIAWEWTIEKAREGEEERTEKKKTRKISQTAQTYDPREGYNPQPPDLSGVTLSRELQAMAEQLAE NYHNTWGRKKKQELEAKGGGTHPLLVPYDTLTAKEKARDREKAQELLKFLQMNGYAVTRGLKDMELDTSSIEKRFAFGFL QQLLRWMDISQEFIAHLEAVVSSGRVEKSPHEQEIKFFAKILLPLINQYFTNHCLYFLSTPAKVLGSGGHASNKEKEMIT SLFCKLAALVRHRVSLFGTDAPAVVNCLHILARSLDARTVMKSGPEIVKAGLRSFFESASEDIEKMVENLRLGKVSQART QVKGVGQNLTYTTVALLPVLTTLFQHIAQHQFGDDVILDDVQVSCYRTLCSIYSLGTTKNTYVEKLRPALGECLARLAAA MPVAFLEPQLNEYNACSVYTTKSPRERAILGLPNSVEEMCPDIPVLDRLMADIGGLAESGARYTEMPHVIEITLPMLCSY LPRWWERGPEAPPPALPAGAPPPCTAVTSDHLNSLLGNILRIIVNNLGIDEATWMKRLAVFAQPIVSRARPELLHSHFIP TIGRLRKRAGKVVAEEEQLRLEAKAEAEEGELLVRDEFSVLCRDLYALYPLLIRYVDNNRAHWLTEPNANAEELFRMVGE IFIYWSKSHNFKREEQNFVVQNEINNMSFLTADSKSKMAKAGDAQSGGSDQERTKKKRRGDRYSVQTSLIVATLKKMLPI GLNMCAPTDQDLIMLAKTRYALKDTDEEVREFLQNNLHLQGKVEGSPSLRWQMALYRGLPGREEDADDPEKIVRRVQEVS AVLYHLEQTEHPYKSKKAVWHKLLSKQRRRAVVACFRMTPLYNLPTHRACNMFLESYKAAWILTEDHSFEDRMIDDLSKA GEQEEEEEEVEEKKPDPLHQLVLHFSRTALTEKSKLDEDYLYMAYADIMAKSCHLEEGGENGEAEEEEVEVSFEEKEMEK QRLLYQQSRLHTRGAAEMVLQMISACKGETGAMVSSTLKLGISILNGGNAEVQQKMLDYLKDKKEVGFFQSIQALMQTCS VLDLNAFERQNKAEGLGMVNEDGTVINRQNGEKVMADDEFTQDLFRFLQLLCEGHNNDFQNYLRTQTGNTTTINIIICTV DYLLRLQESISDFYWYYSGKDVIEEQGKRNFSKAMSVAKQVFNSLTEYIQGPCTGNQQSLAHSRLWDAVVGFLHVFAHMM MKLAQDSSQIELLKELLDLQKDMVVMLLSLLEGNVVNGMIARQMVDMLVESSSNVEMILKFFDMFLKLKDIVGSEAFQDY VTDPRGLISKKDFQKAMDSQKQFTGPEIQFLLSCSEADENEMINFEEFANRFQEPARDIGFNVAVLLTNLSEHVPHDPRL RNFLELAESILEYFRPYLGRIEIMGASRRIERIYFEISETNRAQWEMPQVKESKRQFIFDVVNEGGEAEKMELFVSFCED TIFEMQIAAQISEPEGEPEADEDEGMGEAAAEGAEEGAAGAEGAAGTVAAGATARLAAAAARALRGLSYRSLRRRVRRLR RLTAREAATALAALLWAVVARAGAAGAGAAAGALRLLWGSLFGGGLVEGAKKVTVTELLAGMPDPTSDEVHGEQPAGPGG DADGAGEGEGEGDAAEGDGDEEVAGHEAGPGGAEGVVAVADGGPFRPEGAGGLGDMGDTTPAEPPTPEGSPILKRKLGVD GEEEELVPEPEPEPEPEPEKADEENGEKEEVPEAPPEPPKKAPPSPPAKKEEAGGAGMEFWGELEVQRVKFLNYLSRNFY TLRFLALFLAFAINFILLFYKVSDSPPGEDDMEGSAAGDLAGAGSGGGSGWGSGAGEEAEGDEDENMVYYFLEESTGYME PALWCLSLLHTLVAFLCIIGYNCLKVPLVIFKREKELARKLEFDGLYITEQPGDDDVKGQWDRLVLNTPSFPSNYWDKFV KRKVLDKHGDIFGRERIAELLGMDLASLEITAHNERKPDPPPGLLTWLMSIDVKYQIWKFGVIFTDNSFLYLGWYMVMSL LGHYNNFFFAAHLLDIAMGVKTLRTILSSVTHNGKQLVMTVGLLAVVVYLYTVVAFNFFRKFYNKSEDEDEPDMKCDDMM TCYLFHMYVGVRAGGGIGDEIEDPAGDEYELYRVVFDITFFFFVIVILLAIIQGLIIDAFGELRDQQEQVKEDMETKCFI CGIGSDYFDTTPHGFETHTLEEHNLANYMFFLMYLINKDETEHTGQESYVWKMYQERCWDFFPAGDCFRKQYEDQLS P11716 Peptidyl-prolyl cis-trans isomerase FKBP1B Homo sapiens 0.011667305 4 Escherichia coli LEVO GVEIETISPGDGRTFPKKGQTCVVHYTGMLQNGKKFDSSRDRNKPFKFRIGKQEVIKGFEEGAAQMSLGQRAKLTCTPDV AYGATGHPGVIPPNATLIFDVELLNLE P68106 5.2.1.8 ADENOSINE-5'-TRIPHOSPHATE 0.000507181 4 ATP CAFFEINE 0.000194191 4 CFF CALCIUM ION 4.0078e-05 4 CA ZINC ION 6.5409e-05 4 ZN (1P)-2,2',3,5',6-pentachloro-1,1'-biphenyl 0.000326433 4 A1CXI singleParticle particle 12 7.5 Quantifoil R2/2 ETHANE 100 277.15 FEI VITROBOT MARK IV

50 mM HEPES pH 7.5 + 500 mM NaCl + 2 mM EGTA + 2 mM TCEP + 0.1 mM PMSF + 0.5% CHAPS + 0.2% soybean phosphatidylcholine + 1:1000 protease inhibitor cocktail

TFS KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 0.5 2.0 FEI FALCON IV (4k x 4k) 1 8121 50.0 1 343385 cryoSPARC 4.6.2 PHASE FLIPPING AND AMPLITUDE CORRECTION 6M2W C4 2.87 FSC 0.143 CUT-OFF cryoSPARC 4.6.2 185628 MAXIMUM LIKELIHOOD MAXIMUM LIKELIHOOD cryoSPARC 4.6.2