2026-05-13 REL RCSB INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY DATABASE_REFERENCES citation citation_author em_admin _citation.pdbx_database_id_PubMed _citation.title _em_admin.last_update EXPERIMENTAL_SUMMARY citation citation_author em_admin _citation.pdbx_database_id_PubMed _citation.title _em_admin.last_update DATABASE_REFERENCES citation em_admin _citation.journal_volume _citation.page_first _citation.page_last _em_admin.last_update EXPERIMENTAL_SUMMARY citation em_admin _citation.journal_volume _citation.page_first _citation.page_last _em_admin.last_update RCSB RCSB 2025-04-05 2026-04-01 2026-04-01 2026-05-13 Not funded CryoEM structure of mu-opioid receptor - Gi protein complex bound to fluornitrazene (FNZ) Robertson MJ Skiniotis G Complex, Receptor, Agonist, MOR, MEMBRANE PROTEIN Gomez JL Ventriglia EN Frangos ZJ Sulima A Robertson MJ Sacco MD Budinich RC Giosan IM Xie T Solis O Tischer AE Bossert JM Caldwell KE Bonbrest H Essmann A Garcon-Poca ZM Choi S Noya MR Limiac F Arce A Glatfelter GC Robinson M Chen L Mullarkey AA Brademan DR Enten G Dunne W Quiroz C Schoenborn I Lee CB Rais R Holt DP Dannals RF Shi L Huttenhain R Ferre S Kiyatkin E Bonaventura J Shaham Y Zachariou V Baumann MH Skiniotis G Rice KC Michaelides M A μ-opioid receptor superagonist analgesic with minimal adverse effects. Nature UK 652 1393 1404 2026 41922775 doi:10.1038/s41586-026-10299-9 1476-4687 0006 NATUAS EMD-70069 consensus EM volume
Raw consensus map
 EMD-70070 focused EM volume
Focused refinement map MOR/Gi ras domain
 9o36 FULLOVERLAP EMDB EMD-70069 consensus EM volume
Raw consensus map
 EMDB EMD-70070 focused EM volume
Focused refinement map MOR/Gi ras domain
 EMDB EMD-70071 associated EM volume
CryoEM structure of mu-opioid receptor - Gi protein complex bound to fluornitrazene (FNZ)
 MOR-Gi heterotrimer complex MOR-Gi heterotrimer complex 0 1 2 3 4 5 Homo sapiens Guanine nucleotide-binding protein G(i) subunit alpha-1 Homo sapiens 0.040415031000000004 1 Trichoplusia ni LEVO MGCTLSAEDKAAVERSKMIDRNLREDGEKAAREVKLLLLGAGESGKSTIVKQMKIIHEAGYSEEECKQYKAVVYSNTIQS IIAIIRAMGRLKIDFGDSARADDARQLFVLAGAAEEGFMTAELAGVIKRLWKDSGVQACFNRSREYQLNDSAAYYLNDLD RIAQPNYIPTQQDVLRTRVKTTGIVETHFTFKDLHFKMFDVGGQRSERKKWIHCFEGVTAIIFCVALSDYDLVLAEDEEM NRMHESMKLFDSICNNKWFTDTSIILFLNKKDLFEEKIKKSPLTICYPEYAGSNTYEEAAAYIQCQFEDLNKRKDTKEIY THFTCATDTKNVQFVFDAVTDVIIKNNLKDCGLF P63096 Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 Homo sapiens 0.037671102 1 Trichoplusia ni LEVO PGSSGSELDQLRQEAEQLKNQIRDARKACADATLSQITNNIDPVGRIQMRTRRTLRGHLAKIYAMHWGTDSRLLVSASQD GKLIIWDSYTTNKVHAIPLRSSWVMTCAYAPSGNYVACGGLDNICSIYNLKTREGNVRVSRELAGHTGYLSCCRFLDDNQ IVTSSGDTTCALWDIETGQQTTTFTGHTGDVMSLSLAPDTRLFVSGACDASAKLWDVREGMCRQTFTGHESDINAICFFP NGNAFATGSDDATCRLFDLRADQELMTYSHDNIICGITSVSFSKSGRLLLAGYDDFNCNVWDALKADRAGVLAGHDNRVS CLGVTDDGMAVATGSWDSFLKIWN P62873 Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 Homo sapiens 0.007861143 1 Trichoplusia ni LEVO MASNNTASIAQARKLVEQLKMEANIDRIKVSKAAADLMAYCEAHAKEDPLLTPVPASENPFREKKFFCAIL P59768 scFv16 Mus musculus 0.027784896 1 Trichoplusia ni LEVO DVQLVESGGGLVQPGGSRKLSCSASGFAFSSFGMHWVRQAPEKGLEWVAYISSGSGTIYYADTVKGRFTISRDDPKNTLF LQMTSLRSEDTAMYYCVRSIYYYGSSPFDFWGQGTTLTVSSGGGGSGGGGSGGGGSDIVMTQATSSVPVTPGESVSISCR SSKSLLHSNGNTYLYWFLQRPGQSPQLLIYRMSNLASGVPDRFSGSGSGTAFTLTISRLEAEDVGVYYCMQHLEYPLTFG AGTKLELKAAAHHHHHHHH Mu-type opioid receptor Mus musculus 0.047910758 1 Spodoptera frugiperda LEVO MKTIIALSYIFCLVFADYKDDDDAMGPGNISDCSDPLAPASCSPAPGSWLNLSHVDGNQSDPCGPNRTGLGGSHSLCPQT GSPSMVTAITIMALYSIVCVVGLFGNFLVMYVIVRYTKMKTATNIYIFNLALADALATSTLPFQSVNYLMGTWPFGNILC KIVISIDYYNMFTSIFTLCTMSVDRYIAVCHPVKALDFRTPRNAKIVNVCNWILSSAIGLPVMFMATTKYRQGSIDCTLT FSHPTWYWENLLKICVFIFAFIMPVLIITVCYGLMILRLKSVRMLSGSKEKDRNLRRITRMVLVVVAVFIVCWTPIHIYV IIKALITIPETTFQTVSWHFCIALGYTNSCLNPVLYAFLDENFKRCFREFCIPTSSTIEQQNSARIRQNTREHPSTANTV DRTNHQLENLEAETAPLPDIHHHHHH P42866 N,N-diethyl-2-(2-{[4-(2-fluoroethoxy)phenyl]methyl}-5-nitro-1H-1,3-benzimidazol-1-yl)ethan-1-amine 0.000414473 1 A1B79 singleParticle particle 7.5 ETHANE TFS KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 0.6 1.5 GATAN K3 BIOQUANTUM (6k x 4k) 56.0 1 PHASE FLIPPING AND AMPLITUDE CORRECTION 2.3 FSC 0.143 CUT-OFF 667110 ANGULAR RECONSTITUTION ANGULAR RECONSTITUTION emd_70071.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 380 380 380 0 0 0 380 380 380 326.80002 326.80002 326.80002 90.0 90.0 90.0 Z Y X -46.000903999999998 73.723249999999993 0.0021159062 1.0933447 0.8600001 0.8600001 0.8600001 9.890000000000001 AUTHOR