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- EMDB-37472: Human L-type voltage-gated calcium channel Cav1.2 at 2.9 Angstrom... -

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Basic information

Entry
Database: EMDB / ID: EMD-37472
TitleHuman L-type voltage-gated calcium channel Cav1.2 at 2.9 Angstrom resolution
Map data
Sample
  • Complex: Cav1.2
    • Protein or peptide: Voltage-dependent L-type calcium channel subunit alpha-1C
    • Protein or peptide: Voltage-dependent calcium channel subunit alpha-2/delta-1Voltage-gated calcium channel
    • Protein or peptide: Voltage-dependent L-type calcium channel subunit beta-3
  • Ligand: CALCIUM IONCalcium
  • Ligand: 1,2-Distearoyl-sn-glycerophosphoethanolamine
  • Ligand: CHOLESTEROL
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
  • Ligand: [(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
KeywordsCav1.2 / Channels / Calcium Ion-Selective / TRANSPORT PROTEIN / MEMBRANE PROTEIN
Function / homology
Function and homology information


: / voltage-gated calcium channel activity involved in AV node cell action potential / voltage-gated calcium channel activity involved in cardiac muscle cell action potential / immune system development / regulation of membrane repolarization during action potential / Presynaptic depolarization and calcium channel opening / positive regulation of high voltage-gated calcium channel activity / membrane depolarization during atrial cardiac muscle cell action potential / Phase 2 - plateau phase / calcium ion transmembrane transport via high voltage-gated calcium channel ...: / voltage-gated calcium channel activity involved in AV node cell action potential / voltage-gated calcium channel activity involved in cardiac muscle cell action potential / immune system development / regulation of membrane repolarization during action potential / Presynaptic depolarization and calcium channel opening / positive regulation of high voltage-gated calcium channel activity / membrane depolarization during atrial cardiac muscle cell action potential / Phase 2 - plateau phase / calcium ion transmembrane transport via high voltage-gated calcium channel / membrane depolarization during AV node cell action potential / membrane depolarization during bundle of His cell action potential / positive regulation of adenylate cyclase activity / cardiac conduction / L-type voltage-gated calcium channel complex / membrane depolarization during cardiac muscle cell action potential / cardiac muscle cell action potential involved in contraction / regulation of ventricular cardiac muscle cell action potential / high voltage-gated calcium channel activity / camera-type eye development / NCAM1 interactions / regulation of ventricular cardiac muscle cell membrane repolarization / embryonic forelimb morphogenesis / calcium ion transport into cytosol / cell communication by electrical coupling involved in cardiac conduction / regulation of calcium ion transmembrane transport via high voltage-gated calcium channel / neuromuscular junction development / voltage-gated calcium channel complex / neuronal dense core vesicle / Phase 0 - rapid depolarisation / regulation of heart rate by cardiac conduction / alpha-actinin binding / calcium channel regulator activity / calcium ion import across plasma membrane / regulation of calcium ion transport / voltage-gated calcium channel activity / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / sarcoplasmic reticulum / Regulation of insulin secretion / protein localization to plasma membrane / postsynaptic density membrane / calcium ion transmembrane transport / Adrenaline,noradrenaline inhibits insulin secretion / Z disc / cellular response to amyloid-beta / calcium ion transport / heart development / positive regulation of cytosolic calcium ion concentration / T cell receptor signaling pathway / perikaryon / chemical synaptic transmission / postsynaptic density / calmodulin binding / dendrite / synapse / extracellular exosome / membrane / metal ion binding / plasma membrane / cytosol / cytoplasm
Similarity search - Function
Voltage-dependent calcium channel, L-type, beta-3 subunit / Voltage-dependent L-type calcium channel subunit beta-3, SH3 domain / Voltage-dependent calcium channel, L-type, alpha-1C subunit / Voltage-dependent L-type calcium channel subunit beta-1-4, N-terminal A domain / Voltage-dependent calcium channel, L-type, beta subunit / Voltage gated calcium channel subunit beta domain 4Aa N terminal / Voltage-gated calcium channel subunit alpha, C-terminal / Voltage-gated calcium channel subunit alpha, C-term / Voltage-dependent calcium channel, L-type, alpha-1 subunit / VWA N-terminal ...Voltage-dependent calcium channel, L-type, beta-3 subunit / Voltage-dependent L-type calcium channel subunit beta-3, SH3 domain / Voltage-dependent calcium channel, L-type, alpha-1C subunit / Voltage-dependent L-type calcium channel subunit beta-1-4, N-terminal A domain / Voltage-dependent calcium channel, L-type, beta subunit / Voltage gated calcium channel subunit beta domain 4Aa N terminal / Voltage-gated calcium channel subunit alpha, C-terminal / Voltage-gated calcium channel subunit alpha, C-term / Voltage-dependent calcium channel, L-type, alpha-1 subunit / VWA N-terminal / Voltage-dependent calcium channel, alpha-2/delta subunit, conserved region / VWA N-terminal / Neuronal voltage-dependent calcium channel alpha 2acd / Voltage-dependent calcium channel, alpha-1 subunit, IQ domain / Voltage gated calcium channel IQ domain / Voltage gated calcium channel IQ domain / Voltage-dependent calcium channel, alpha-1 subunit / Voltage-dependent L-type calcium channel, IQ-associated domain / Voltage-dependent L-type calcium channel, IQ-associated / Guanylate kinase/L-type calcium channel beta subunit / Guanylate kinase / Guanylate kinase homologues. / von Willebrand factor type A domain / von Willebrand factor (vWF) type A domain / VWFA domain profile. / Voltage-dependent channel domain superfamily / von Willebrand factor, type A / von Willebrand factor A-like domain superfamily / SH3-like domain superfamily / Src homology 3 (SH3) domain profile. / SH3 domain / Ion transport domain / Ion transport protein / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Voltage-dependent L-type calcium channel subunit beta-3 / Voltage-dependent calcium channel subunit alpha-2/delta-1 / Voltage-dependent L-type calcium channel subunit alpha-1C
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.9 Å
AuthorsGao S / Yao X / Yan N
Funding support China, 1 items
OrganizationGrant numberCountry
Beijing Nova ProgramZ191100001119127 China
CitationJournal: Cell / Year: 2023
Title: Structural basis for human Ca1.2 inhibition by multiple drugs and the neurotoxin calciseptine.
Authors: Shuai Gao / Xia Yao / Jiaofeng Chen / Gaoxingyu Huang / Xiao Fan / Lingfeng Xue / Zhangqiang Li / Tong Wu / Yupeng Zheng / Jian Huang / Xueqin Jin / Yan Wang / Zhifei Wang / Yong Yu / Lei ...Authors: Shuai Gao / Xia Yao / Jiaofeng Chen / Gaoxingyu Huang / Xiao Fan / Lingfeng Xue / Zhangqiang Li / Tong Wu / Yupeng Zheng / Jian Huang / Xueqin Jin / Yan Wang / Zhifei Wang / Yong Yu / Lei Liu / Xiaojing Pan / Chen Song / Nieng Yan /
Abstract: Ca1.2 channels play crucial roles in various neuronal and physiological processes. Here, we present cryo-EM structures of human Ca1.2, both in its apo form and in complex with several drugs, as well ...Ca1.2 channels play crucial roles in various neuronal and physiological processes. Here, we present cryo-EM structures of human Ca1.2, both in its apo form and in complex with several drugs, as well as the peptide neurotoxin calciseptine. Most structures, apo or bound to calciseptine, amlodipine, or a combination of amiodarone and sofosbuvir, exhibit a consistent inactivated conformation with a sealed gate, three up voltage-sensing domains (VSDs), and a down VSD. Calciseptine sits on the shoulder of the pore domain, away from the permeation path. In contrast, when pinaverium bromide, an antispasmodic drug, is inserted into a cavity reminiscent of the IFM-binding site in Na channels, a series of structural changes occur, including upward movement of VSD coupled with dilation of the selectivity filter and its surrounding segments in repeat III. Meanwhile, S4-5 merges with S5 to become a single helix, resulting in a widened but still non-conductive intracellular gate.
History
DepositionSep 17, 2023-
Header (metadata) releaseDec 6, 2023-
Map releaseDec 6, 2023-
UpdateDec 6, 2023-
Current statusDec 6, 2023Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_37472.png

Downloads & links

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Map

FileDownload / File: emd_37472.map.gz / Format: CCP4 / Size: 83.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.114 Å
Density
Contour LevelBy AUTHOR: 0.4
Minimum - Maximum-3.1339312 - 4.1691284
Average (Standard dev.)-0.001948916 (±0.1223725)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions280280280
Spacing280280280
CellA=B=C: 311.91998 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_37472_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_37472_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Cav1.2

EntireName: Cav1.2
Components
  • Complex: Cav1.2
    • Protein or peptide: Voltage-dependent L-type calcium channel subunit alpha-1C
    • Protein or peptide: Voltage-dependent calcium channel subunit alpha-2/delta-1Voltage-gated calcium channel
    • Protein or peptide: Voltage-dependent L-type calcium channel subunit beta-3
  • Ligand: CALCIUM IONCalcium
  • Ligand: 1,2-Distearoyl-sn-glycerophosphoethanolamine
  • Ligand: CHOLESTEROL
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
  • Ligand: [(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

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Supramolecule #1: Cav1.2

SupramoleculeName: Cav1.2 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Voltage-dependent L-type calcium channel subunit alpha-1C

MacromoleculeName: Voltage-dependent L-type calcium channel subunit alpha-1C
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 246.85125 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MVNENTRMYI PEENHQGSNY GSPRPAHANM NANAAAGLAP EHIPTPGAAL SWQAAIDAAR QAKLMGSAGN ATISTVSSTQ RKRQQYGKP KKQGSTTATR PPRALLCLTL KNPIRRACIS IVEWKPFEII ILLTIFANCV ALAIYIPFPE DDSNATNSNL E RVEYLFLI ...String:
MVNENTRMYI PEENHQGSNY GSPRPAHANM NANAAAGLAP EHIPTPGAAL SWQAAIDAAR QAKLMGSAGN ATISTVSSTQ RKRQQYGKP KKQGSTTATR PPRALLCLTL KNPIRRACIS IVEWKPFEII ILLTIFANCV ALAIYIPFPE DDSNATNSNL E RVEYLFLI IFTVEAFLKV IAYGLLFHPN AYLRNGWNLL DFIIVVVGLF SAILEQATKA DGANALGGKG AGFDVKALRA FR VLRPLRL VSGVPSLQVV LNSIIKAMVP LLHIALLVLF VIIIYAIIGL ELFMGKMHKT CYNQEGIADV PAEDDPSPCA LET GHGRQC QNGTVCKPGW DGPKHGITNF DNFAFAMLTV FQCITMEGWT DVLYWVNDAV GRDWPWIYFV TLIIIGSFFV LNLV LGVLS GEFSKEREKA KARGDFQKLR EKQQLEEDLK GYLDWITQAE DIDPENEDEG MDEEKPRNMS MPTSETESVN TENVA GGDI EGENCGARLA HRISKSKFSR YWRRWNRFCR RKCRAAVKSN VFYWLVIFLV FLNTLTIASE HYNQPNWLTE VQDTAN KAL LALFTAEMLL KMYSLGLQAY FVSLFNRFDC FVVCGGILET ILVETKIMSP LGISVLRCVR LLRIFKITRY WNSLSNL VA SLLNSVRSIA SLLLLLFLFI IIFSLLGMQL FGGKFNFDEM QTRRSTFDNF PQSLLTVFQI LTGEDWNSVM YDGIMAYG G PSFPGMLVCI YFIILFICGN YILLNVFLAI AVDNLADAES LTSAQKEEEE EKERKKLART ASPEKKQELV EKPAVGESK EEKIELKSIT ADGESPPATK INMDDLQPNE NEDKSPYPNP ETTGEEDEEE PEMPVGPRPR PLSELHLKEK AVPMPEASAF FIFSSNNRF RLQCHRIVND TIFTNLILFF ILLSSISLAA EDPVQHTSFR NHILGNADYV FTSIFTLEII LKMTAYGAFL H KGSFCRNY FNILDLLVVS VSLISFGIQS SAINVVKILR VLRVLRPLRA INRAKGLKHV VQCVFVAIRT IGNIVIVTTL LQ FMFACIG VQLFKGKLYT CSDSSKQTEA ECKGNYITYK DGEVDHPIIQ PRSWENSKFD FDNVLAAMMA LFTVSTFEGW PEL LYRSID SHTEDKGPIY NYRVEISIFF IIYIIIIAFF MMNIFVGFVI VTFQEQGEQE YKNCELDKNQ RQCVEYALKA RPLR RYIPK NQHQYKVWYV VNSTYFEYLM FVLILLNTIC LAMQHYGQSC LFKIAMNILN MLFTGLFTVE MILKLIAFKP KGYFS DPWN VFDFLIVIGS IIDVILSETN HYFCDAWNTF DALIVVGSIV DIAITEVNPA EHTQCSPSMN AEENSRISIT FFRLFR VMR LVKLLSRGEG IRTLLWTFIK SFQALPYVAL LIVMLFFIYA VIGMQVFGKI ALNDTTEINR NNNFQTFPQA VLLLFRC AT GEAWQDIMLA CMPGKKCAPE SEPSNSTEGE TPCGSSFAVF YFISFYMLCA FLIINLFVAV IMDNFDYLTR DWSILGPH H LDEFKRIWAE YDPEAKGRIK HLDVVTLLRR IQPPLGFGKL CPHRVACKRL VSMNMPLNSD GTVMFNATLF ALVRTALRI KTEGNLEQAN EELRAIIKKI WKRTSMKLLD QVVPPAGDDE VTVGKFYATF LIQEYFRKFK KRKEQGLVGK PSQRNALSLQ AGLRTLHDI GPEIRRAISG DLTAEEELDK AMKEAVSAAS EDDIFRRAGG LFGNHVSYYQ SDGRSAFPQT FTTQRPLHIN K AGSSQGDT ESPSHEKLVD STFTPSSYSS TGSNANINNA NNTALGRLPR PAGYPSTVST VEGHGPPLSP AIRVQEVAWK LS SNRERHV PMCEDLELRR DSGSAGTQAH CLLLRKANPS RCHSRESQAA MAGQEETSQD ETYEVKMNHD TEACSEPSLL STE MLSYQD DENRQLTLPE EDKRDIRQSP KRGFLRSASL GRRASFHLEC LKRQKDRGGD ISQKTVLPLH LVHHQALAVA GLSP LLQRS HSPASFPRPF ATPPATPGSR GWPPQPVPTL RLEGVESSEK LNSSFPSIHC GSWAETTPGG GGSSAARRVR PVSLM VPSQ AGAPGRQFHG SASSLVEAVL ISEGLGQFAQ DPKFIEVTTQ ELADACDMTI EEMESAADNI LSGGAPQSPN GALLPF VNC RDAGQDRAGG EEDAGCVRAR GRPSEEELQD SRVYVSSL

UniProtKB: Voltage-dependent L-type calcium channel subunit alpha-1C

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Macromolecule #2: Voltage-dependent calcium channel subunit alpha-2/delta-1

MacromoleculeName: Voltage-dependent calcium channel subunit alpha-2/delta-1
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 124.692469 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MAAGCLLALT LTLFQSLLIG PSSEEPFPSA VTIKSWVDKM QEDLVTLAKT ASGVNQLVDI YEKYQDLYTV EPNNARQLVE IAARDIEKL LSNRSKALVR LALEAEKVQA AHQWREDFAS NEVVYYNAKD DLDPEKNDSE PGSQRIKPVF IEDANFGRQI S YQHAAVHI ...String:
MAAGCLLALT LTLFQSLLIG PSSEEPFPSA VTIKSWVDKM QEDLVTLAKT ASGVNQLVDI YEKYQDLYTV EPNNARQLVE IAARDIEKL LSNRSKALVR LALEAEKVQA AHQWREDFAS NEVVYYNAKD DLDPEKNDSE PGSQRIKPVF IEDANFGRQI S YQHAAVHI PTDIYEGSTI VLNELNWTSA LDEVFKKNRE EDPSLLWQVF GSATGLARYY PASPWVDNSR TPNKIDLYDV RR RPWYIQG AASPKDMLIL VDVSGSVSGL TLKLIRTSVS EMLETLSDDD FVNVASFNSN AQDVSCFQHL VQANVRNKKV LKD AVNNIT AKGITDYKKG FSFAFEQLLN YNVSRANCNK IIMLFTDGGE ERAQEIFNKY NKDKKVRVFT FSVGQHNYDR GPIQ WMACE NKGYYYEIPS IGAIRINTQE YLDVLGRPMV LAGDKAKQVQ WTNVYLDALE LGLVITGTLP VFNITGQFEN KTNLK NQLI LGVMGVDVSL EDIKRLTPRF TLCPNGYYFA IDPNGYVLLH PNLQPKPIGV GIPTINLRKR RPNIQNPKSQ EPVTLD FLD AELENDIKVE IRNKMIDGES GEKTFRTLVK SQDERYIDKG NRTYTWTPVN GTDYSLALVL PTYSFYYIKA KLEETIT QA RYSETLKPDN FEESGYTFIA PRDYCNDLKI SDNNTEFLLN FNEFIDRKTP NNPSCNADLI NRVLLDAGFT NELVQNYW S KQKNIKGVKA RFVVTDGGIT RVYPKEAGEN WQENPETYED SFYKRSLDND NYVFTAPYFN KSGPGAYESG IMVSKAVEI YIQGKLLKPA VVGIKIDVNS WIENFTKTSI RDPCAGPVCD CKRNSDVMDC VILDDGGFLL MANHDDYTNQ IGRFFGEIDP SLMRHLVNI SVYAFNKSYD YQSVCEPGAA PKQGAGHRSA YVPSVADILQ IGWWATAAAW SILQQFLLSL TFPRLLEAVE M EDDDFTAS LSKQSCITEQ TQYFFDNDSK SFSGVLDCGN CSRIFHGEKL MNTNLIFIMV ESKGTCPCDT RLLIQAEQTS DG PNPCDMV KQPRYRKGPD VCFDNNVLED YTDCGGVSGL NPSLWYIIGI QFLLLWLVSG STHRLL

UniProtKB: Voltage-dependent calcium channel subunit alpha-2/delta-1

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Macromolecule #3: Voltage-dependent L-type calcium channel subunit beta-3

MacromoleculeName: Voltage-dependent L-type calcium channel subunit beta-3
type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 54.607852 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MYDDSYVPGF EDSEAGSADS YTSRPSLDSD VSLEEDRESA RREVESQAQQ QLERAKHKPV AFAVRTNVSY CGVLDEECPV QGSGVNFEA KDFLHIKEKY SNDWWIGRLV KEGGDIAFIP SPQRLESIRL KQEQKARRSG NPSSLSDIGN RRSPPPSLAK Q KQKQAEHV ...String:
MYDDSYVPGF EDSEAGSADS YTSRPSLDSD VSLEEDRESA RREVESQAQQ QLERAKHKPV AFAVRTNVSY CGVLDEECPV QGSGVNFEA KDFLHIKEKY SNDWWIGRLV KEGGDIAFIP SPQRLESIRL KQEQKARRSG NPSSLSDIGN RRSPPPSLAK Q KQKQAEHV PPYDVVPSMR PVVLVGPSLK GYEVTDMMQK ALFDFLKHRF DGRISITRVT ADLSLAKRSV LNNPGKRTII ER SSARSSI AEVQSEIERI FELAKSLQLV VLDADTINHP AQLAKTSLAP IIVFVKVSSP KVLQRLIRSR GKSQMKHLTV QMM AYDKLV QCPPESFDVI LDENQLEDAC EHLAEYLEVY WRATHHPAPG PGLLGPPSAI PGLQNQQLLG ERGEEHSPLE RDSL MPSDE ASESSRQAWT GSSQRSSRHL EEDYADAYQD LYQPHRQHTS GLPSANGHDP QDRLLAQDSE HNHSDRNWQR NRPWP KDSY

UniProtKB: Voltage-dependent L-type calcium channel subunit beta-3

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Macromolecule #7: CALCIUM ION

MacromoleculeName: CALCIUM ION / type: ligand / ID: 7 / Number of copies: 2 / Formula: CA
Molecular weightTheoretical: 40.078 Da

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Macromolecule #8: 1,2-Distearoyl-sn-glycerophosphoethanolamine

MacromoleculeName: 1,2-Distearoyl-sn-glycerophosphoethanolamine / type: ligand / ID: 8 / Number of copies: 1 / Formula: 3PE
Molecular weightTheoretical: 748.065 Da
Chemical component information

ChemComp-3PE:
1,2-Distearoyl-sn-glycerophosphoethanolamine / phospholipid*YM / Phosphatidylethanolamine

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Macromolecule #9: CHOLESTEROL

MacromoleculeName: CHOLESTEROL / type: ligand / ID: 9 / Number of copies: 4 / Formula: CLR
Molecular weightTheoretical: 386.654 Da
Chemical component information

ChemComp-CLR:
CHOLESTEROL / Cholesterol

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Macromolecule #10: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 10 / Number of copies: 3 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose / N-Acetylglucosamine

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Macromolecule #11: [(2R)-1-octadecanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tr...

MacromoleculeName: [(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
type: ligand / ID: 11 / Number of copies: 1 / Formula: PT5
Molecular weightTheoretical: 1.047088 KDa

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.4
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 281 K

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2.1 µm / Nominal defocus min: 1.9000000000000001 µm
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 50.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: OTHER
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 74130

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