2026-09-09 REL RCSB INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY RCSB RCSB 2026-03-22 2026-07-29 2026-07-29 2026-09-09 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) GM153178 United States National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) R35GM153178-01S1 United States National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) R01GM072804 United States American Heart Association 23CDA1048883 United States Welch Foundation AU-2014-20220331 United States Welch Foundation AU-2014-20250403 United States Structure of mammalian Type 2 Inositol 1,4,5-trisphosphate receptors (IP3R2) in the Apo-state (composite map) Serysheva II Baker MR Fan G ion channel, MEMBRANE PROTEIN Baker MR Lin X Fan G Martinez-Chavez A Wagner LE Malik S Allison T Bell B Seryshev AB Cordero-Morales J Baker ML Yule DI Serysheva II Cryo-EM insights into isoform-specific properties of the IP 3 R2 channel. Nat Commun UK 17 2026 42637755 doi:10.1038/s41467-026-75806-y 2041-1723 EMDB EMD-76259 associated EM volume Inositol 1,4,5-trisphosphate receptor type 2 Inositol 1,4,5-trisphosphate receptor type 2 0 1 Mus musculus 1.2 singleParticle particle 3 7.4
50mM Tris-HCl, 150 mM NaCl, 1mM DTT, 1mM EDTA
 Quantifoil COPPER CARBON CONTINUOUS GLOW DISCHARGE ETHANE 90 277.15 FEI VITROBOT MARK IV
immuoaffinity purified, LMNG and lipid solubilized tetrameric ion channel protein
 TFS KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 2.7 1.0 3.0 130000.0 46100.0 FEI TITAN KRIOS AUTOGRID HOLDER NITROGEN GIF Bioquantum 20 GATAN K2 SUMMIT (4k x 4k) SUPER-RESOLUTION 1-35 1 8112 1.43 1 413650 cryoSPARC 4.7 PHASE FLIPPING AND AMPLITUDE CORRECTION C4 3.2 FSC 0.143 CUT-OFF cryoSPARC 4.7 73731 MAXIMUM LIKELIHOOD cryoSPARC 4.7 MAXIMUM LIKELIHOOD cryoSPARC 4.7 emd_76259.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 440 440 440 0 0 0 440 440 440 475.2 475.2 475.2 90.0 90.0 90.0 X Y Z 0.0 8.487591 0.018293504 0.12642425 1.08 1.08 1.08 0.471 AUTHOR IP3R2-APO composite map AlphaFold in silico model FLEXIBLE FIT fit to density REAL 153.409999999999997