2024-11-20 REL RCSB RCSB RCSB 2023-07-18 2024-04-03 2024-04-03 2024-11-20 National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK) DK066485 United States National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) GM129547 United States Cryo-EM structure of a SUR1/Kir6.2-Q52R ATP-sensitive potassium channel in the presence of PIP2 in the open conformation Driggers CM Shyng S-L ATP-sensitive potassium channel, KATP channel, SUR1, Kir6.2-Q52R, potassium transport, metabolic sensor, diabetes, phospholipid binding, PIP2, TRANSPORT PROTEIN Driggers CM Kuo YY Zhu P ElSheikh A Shyng SL Structure of an open K ATP channel reveals tandem PIP 2 binding sites mediating the Kir6.2 and SUR1 regulatory interface. Nat Commun UK 15 2502 2502 2024 38509107 doi:10.1038/s41467-024-46751-5 2041-1723 EMD-41277 other EM volume 8ti2 FULLOVERLAP Kir6.2-Q52R/SUR1 open channel Kir6.2-Q52R/SUR1 open channel 0 1 2
Kir6.2-Q52R/SUR1 open KATP channel in the open conformation in complex with PIP2 and other phospholipids
Rattus norvegicus 0.880 ATP-sensitive inward rectifier potassium channel 11 Rattus norvegicus Pancreas Beta cell 0.043690828 4 Chlorocebus aethiops LEVO MLSRKGIIPEEYVLTRLAEDPTEPRYRTRERRARFVSKKGNCNVAHKNIRERGRFLQDVFTTLVDLKWPHTLLIFTMSFL CSWLLFAMVWWLIAFAHGDLAPGEGTNVPCVTSIHSFSSAFLFSIEVQVTIGFGGRMVTEECPLAILILIVQNIVGLMIN AIMLGCIFMKTAQAHRRAETLIFSKHAVITLRHGRLCFMLRVGDLRKSMIISATIHMQVVRKTTSPEGEVVPLHQVDIPM ENGVGGNSIFLVAPLIIYHVIDSNSPLYDLAPSDLHHHQDLEIIVILEGVVETTGITTQARTSYLADEILWGQRFVPIVA EEDGRYSVDYSKFGNTVKVPTPLCTARQLDEDRSLLDALTLASSRGPLRKRSVAVAKAKPKFSISPDSLS P70673 SUR1 Mesocricetus auratus 0.177296578 4 Chlorocebus aethiops LEVO MPLAFCGTENHSAAYRVDQGVLNNGCFVDALNVVPHVFLLFITFPILFIGWGSQSSKVHIHHSTWLHFPGHNLRWILTFI LLFVLVCEIAEGILSDGVTESRHLHLYMPAGMAFMAAITSVVYYHNIETSNFPKLLIALLIYWTLAFITKTIKFVKFYDH AIGFSQLRFCLTGLLVILYGMLLLVEVNVIRVRRYIFFKTPREVKPPEDLQDLGVRFLQPFVNLLSKGTYWWMNAFIKTA HKKPIDLRAIGKLPIAMRALTNYQRLCVAFDAQARKDTQSPQGARAIWRALCHAFGRRLILSSTFRILADLLGFAGPLCI FGIVDHLGKENHVFQPKTQFLGVYFVSSQEFLGNAYVLAVLLFLALLLQRTFLQASYYVAIETGINLRGAIQTKIYNKIM HLSTSNLSMGEMTAGQICNLVAIDTNQLMWFFFLCPNLWAMPVQIIVGVILLYYILGVSALIGAAVIILLAPVQYFVATK LSQAQRSTLEHSNERLKQTNEMLRGMKLLKLYAWESIFCSRVEVTRRKEMTSLRAFAVYTSISIFMNTAIPIAAVLITFV GHVSFFKESDLSPSVAFASLSLFHILVTPLFLLSSVVRSTVKALVSVKKLSEFLSSAEIREEQCAPREPAPQGQAGKYQA VPLKVVNRKRPAREEVRDLLGPLQRLAPSMDGDADNFCVQIIGGFFTWTPDGIPTLSNITIRIPRGQLTMIVGQVGCGKS SLLLATLGEMQKVSGAVFWNSNLPDSEGEDPSSPERETAAGSDIRSRGPVAYASQKPWLLNATVEENITFESPFNKQRYK MVIEACSLQPDIDILPHGDQTQIGERGINLSGGQRQRISVARALYQQTNVVFLDDPFSALDVHLSDHLMQAGILELLRDD KRTVVLVTHKLQYLPHADWIIAMKDGTIQREGTLKDFQRSECQLFEHWKTLMNRQDQELEKETVMERKASEPSQGLPRAM SSRDGLLLDEEEEEEEAAESEEDDNLSSVLHQRAKIPWRACTKYLSSAGILLLSLLVFSQLLKHMVLVAIDYWLAKWTDS ALVLSPAARNCSLSQECDLDQSVYAMVFTLLCSLGIVLCLVTSVTVEWTGLKVAKRLHRSLLNRIILAPMRFFETTPLGS ILNRFSSDCNTIDQHIPSTLECLSRSTLLCVSALTVISYVTPVFLVALLPLAVVCYFIQKYFRVASRDLQQLDDTTQLPL LSHFAETVEGLTTIRAFRYEARFQQKLLEYTDSNNIASLFLTAANRWLEVRMEYIGACVVLIAAATSISNSLHRELSAGL VGLGLTYALMVSNYLNWMVRNLADMEIQLGAVKRIHALLKTEAESYEGLLAPSLIPKNWPDQGKIQIQNLSVRYDSSLKP VLKHVNALISPGQKIGICGRTGSGKSSFSLAFFRMVDMFEGRIIIDGIDIAKLPLHTLRSRLSIILQDPVLFSGTIRFNL DPEKKCSDSTLWEALEIAQLKLVVKALPGGLDAIITEGGENFSQGQRQLFCLARAFVRKTSIFIMDEATASIDMATENIL QKVVMTAFADRTVVTIAHRVHTILSADLVMVLKRGAILEFDKPETLLSQKDSVFASFVRADK A0A1S4NYG1 [(2R)-1-octadecanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phospho ryl]oxy-propan-2-yl] (8Z)-icosa-5,8,11,14-tetraenoate 0.0010470879999999998 8 PT5 POTASSIUM ION 3.9098e-05 4 K DI-PALMITOYL-3-SN-PHOSPHATIDYLETHANOLAMINE 0.0006919589999999999 4 PEF O-[(R)-{[(2R)-2,3-bis(octadecanoyloxy)propyl]oxy}(hydroxy)phosphoryl]-L-serine 0.000792075 8 P5S 2-acetamido-2-deoxy-beta-D-glucopyranose 0.000221208 4 NAG water 1.8015e-05 14 HOH singleParticle particle 0.15 7.4 200.0 NaCl sodium chloride 100.0 KCl potassium chloride 50.0 HEPES pH 7.5 1.0 brain Phosphatidylinositol 4,5-bisphosphate 0.05 digitonin
MSB with digitonin and PIP2
 Quantifoil R1.2/1.3 GOLD 300 GRAPHENE OXIDE CONTINUOUS GLOW DISCHARGE
The grid was prepared with a Graphene Oxide coating before use.
 ETHANE 100 279 FEI VITROBOT MARK III
3 microliters of purified Kir6.2-Q52R/FLAG-SUR1 was loaded onto Quantifoil R 1.2/1.3 Au 300 grids prepared with a fresh Graphene Oxide surface
 FEI TITAN KRIOS SPOT SCAN BRIGHT FIELD FIELD EMISSION GUN 300 70.0 2.7 1.0 2.5 105000.0 FEI TITAN KRIOS AUTOGRID HOLDER NITROGEN
Titan Krios #3 at the Pacific Northwest National Lab
GATAN K3 (6k x 4k) 3 5241 2.2 55.0 1 14115 6BAA 1 C4 FOURIER SPACE 3.28 FSC 0.143 CUT-OFF cryoSPARC 4.2.1 14115 MAXIMUM LIKELIHOOD cryoSPARC 4.2.1 MAXIMUM LIKELIHOOD cryoSPARC 4.2.1 1 cryoSPARC 4.2.1 emd_41278.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 600 600 600 0 0 0 600 600 600 495.59998 495.59998 495.59998 90.0 90.0 90.0 X Y Z -0.2690726 0.6441323 0.0001296302 0.014180839 0.826 0.826 0.826 0.08 AUTHOR full unsharpened, unmodified, original map from cryoSPARC C4 non-uniform refinement 6BAA PDB experimental model FLEXIBLE FIT emd_41278_msk_1.map emd_41278_half_map_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 600 600 600 0 0 0 600 600 600 495.59998 495.59998 495.59998 90.0 90.0 90.0 X Y Z -1.067666 1.4718581 0.00051342207 0.08471904 0.826 0.826 0.826 AUTHOR half map B from cryoSPARC C4 non-uniform refinement emd_41278_half_map_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 600 600 600 0 0 0 600 600 600 495.59998 495.59998 495.59998 90.0 90.0 90.0 X Y Z -1.0133806 1.2029027 0.00053966703 0.084306315 0.826 0.826 0.826 AUTHOR half map A from cryoSPARC C4 non-uniform refinement