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- EMDB-6847: Structure of pancreatic ATP-sensitive potassium channel bound wit... -

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Basic information

Entry
Database: EMDB / ID: EMD-6847
TitleStructure of pancreatic ATP-sensitive potassium channel bound with glibenclamide and ATPgammaS (focused refinement on SUR1 ABC transporter module at 4.4A)
Map datamain map after postprocessing
Sample
  • Complex: KATP
    • Protein or peptide: ATP-binding cassette sub-family C member 8 isoform X2
  • Ligand: 5-chloro-N-(2-{4-[(cyclohexylcarbamoyl)sulfamoyl]phenyl}ethyl)-2-methoxybenzamide
  • Ligand: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
KeywordsKATP / channel / glibenclamide / sulfonylurea / MEMBRANE PROTEIN
Function / homology
Function and homology information


glutamate secretion, neurotransmission / inward rectifying potassium channel / sulfonylurea receptor activity / ATPase-coupled monoatomic cation transmembrane transporter activity / inorganic cation transmembrane transport / neuromuscular process / action potential / potassium channel activity / ABC-type transporter activity / positive regulation of insulin secretion involved in cellular response to glucose stimulus ...glutamate secretion, neurotransmission / inward rectifying potassium channel / sulfonylurea receptor activity / ATPase-coupled monoatomic cation transmembrane transporter activity / inorganic cation transmembrane transport / neuromuscular process / action potential / potassium channel activity / ABC-type transporter activity / positive regulation of insulin secretion involved in cellular response to glucose stimulus / cellular response to nutrient levels / negative regulation of insulin secretion / ADP binding / presynapse / transmembrane transporter binding / ATP hydrolysis activity / ATP binding
Similarity search - Function
ATP-binding cassette subfamily C member 8 / Sulphonylurea receptor / : / ABC transporter transmembrane region / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter ...ATP-binding cassette subfamily C member 8 / Sulphonylurea receptor / : / ABC transporter transmembrane region / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter / ABC transporter-like, ATP-binding domain / ATP-binding cassette, ABC transporter-type domain profile. / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
ATP-binding cassette sub-family C member 8
Similarity search - Component
Biological speciesMesocricetus auratus (golden hamster)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.4 Å
AuthorsChen L / Wu JX
Funding support China, 5 items
OrganizationGrant numberCountry
Ministry of Science and Technology of China2016YFA0502004 China
National Natural Science Foundation of China31622021 China
National Natural Science Foundation of China31521062 China
China Postdoctoral Science Foundation2016M600856 China
China Postdoctoral Science Foundation2017T100014 China
CitationJournal: Protein Cell / Year: 2018
Title: Ligand binding and conformational changes of SUR1 subunit in pancreatic ATP-sensitive potassium channels.
Authors: Wu JX / Ding D / Wang M / Kang Y / Zeng X / Chen L
History
DepositionNov 29, 2017-
Header (metadata) releaseMay 2, 2018-
Map releaseMay 2, 2018-
UpdateMar 27, 2024-
Current statusMar 27, 2024Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.035
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.035
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-5yw7
  • Surface level: 0.035
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol

Downloads & links

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Map

FileDownload / File: emd_6847.map.gz / Format: CCP4 / Size: 115.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationmain map after postprocessing
Voxel sizeX=Y=Z: 1.055 Å
Density
Contour LevelBy AUTHOR: 0.035 / Movie #1: 0.035
Minimum - Maximum-0.07437969 - 0.14101976
Average (Standard dev.)0.00019300765 (±0.0028246539)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions312312312
Spacing312312312
CellA=B=C: 329.15997 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0551.0551.055
M x/y/z312312312
origin x/y/z0.0000.0000.000
length x/y/z329.160329.160329.160
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS312312312
D min/max/mean-0.0740.1410.000

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Supplemental data

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Sample components

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Entire : KATP

EntireName: KATP
Components
  • Complex: KATP
    • Protein or peptide: ATP-binding cassette sub-family C member 8 isoform X2
  • Ligand: 5-chloro-N-(2-{4-[(cyclohexylcarbamoyl)sulfamoyl]phenyl}ethyl)-2-methoxybenzamide
  • Ligand: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER

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Supramolecule #1: KATP

SupramoleculeName: KATP / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Source (natural)Organism: Mesocricetus auratus (golden hamster)

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Macromolecule #1: ATP-binding cassette sub-family C member 8 isoform X2

MacromoleculeName: ATP-binding cassette sub-family C member 8 isoform X2 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mesocricetus auratus (golden hamster)
Molecular weightTheoretical: 177.295516 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MPLAFCGTEN HSAAYRVDQG VLNNGCFVDA LNVVPHVFLL FITFPILFIG WGSQSSKVHI HHSTWLHFPG HNLRWILTFI LLFVLVCEI AEGILSDGVT ESRHLHLYMP AGMAFMAAIT SVVYYHNIET SNFPKLLIAL LIYWTLAFIT KTIKFVKFYD H AIGFSQLR ...String:
MPLAFCGTEN HSAAYRVDQG VLNNGCFVDA LNVVPHVFLL FITFPILFIG WGSQSSKVHI HHSTWLHFPG HNLRWILTFI LLFVLVCEI AEGILSDGVT ESRHLHLYMP AGMAFMAAIT SVVYYHNIET SNFPKLLIAL LIYWTLAFIT KTIKFVKFYD H AIGFSQLR FCLTGLLVIL YGMLLLVEVN VIRVRRYIFF KTPREVKPPE DLQDLGVRFL QPFVNLLSKG TYWWMNAFIK TA HKKPIDL RAIGKLPIAM RALTNYQRLC VAFDAQARKD TQSPQGARAI WRALCHAFGR RLILSSTFRI LADLLGFAGP LCI FGIVDH LGKENHVFQP KTQFLGVYFV SSQEFLGNAY VLAVLLFLAL LLQRTFLQAS YYVAIETGIN LRGAIQTKIY NKIM HLSTS NLSMGEMTAG QICNLVAIDT NQLMWFFFLC PNLWAMPVQI IVGVILLYYI LGVSALIGAA VIILLAPVQY FVATK LSQA QRSTLEHSNE RLKQTNEMLR GMKLLKLYAW ESIFCSRVEV TRRKEMTSLR AFAVYTSISI FMNTAIPIAA VLITFV GHV SFFKESDLSP SVAFASLSLF HILVTPLFLL SSVVRSTVKA LVSVQKLSEF LSSAEIREEQ CAPREPAPQG QAGKYQA VP LKVVNRKRPA REEVRDLLGP LQRLAPSMDG DADNFCVQII GGFFTWTPDG IPTLSNITIR IPRGQLTMIV GQVGCGKS S LLLATLGEMQ KVSGAVFWNS NLPDSEGEDP SSPERETAAG SDIRSRGPVA YASQKPWLLN ATVEENITFE SPFNKQRYK MVIEACSLQP DIDILPHGDQ TQIGERGINL SGGQRQRISV ARALYQQTNV VFLDDPFSAL DVHLSDHLMQ AGILELLRDD KRTVVLVTH KLQYLPHADW IIAMKDGTIQ REGTLKDFQR SECQLFEHWK TLMNRQDQEL EKETVMERKA SEPSQGLPRA M SSRDGLLL DEEEEEEEAA ESEEDDNLSS VLHQRAKIPW RACTKYLSSA GILLLSLLVF SQLLKHMVLV AIDYWLAKWT DS ALVLSPA ARNCSLSQEC DLDQSVYAMV FTLLCSLGIV LCLVTSVTVE WTGLKVAKRL HRSLLNRIIL APMRFFETTP LGS ILNRFS SDCNTIDQHI PSTLECLSRS TLLCVSALTV ISYVTPVFLV ALLPLAVVCY FIQKYFRVAS RDLQQLDDTT QLPL LSHFA ETVEGLTTIR AFRYEARFQQ KLLEYTDSNN IASLFLTAAN RWLEVRMEYI GACVVLIAAA TSISNSLHRE LSAGL VGLG LTYALMVSNY LNWMVRNLAD MEIQLGAVKR IHALLKTEAE SYEGLLAPSL IPKNWPDQGK IQIQNLSVRY DSSLKP VLK HVNALISPGQ KIGICGRTGS GKSSFSLAFF RMVDMFEGRI IIDGIDIAKL PLHTLRSRLS IILQDPVLFS GTIRFNL DP EKKCSDSTLW EALEIAQLKL VVKALPGGLD AIITEGGENF SQGQRQLFCL ARAFVRKTSI FIMDEATASI DMATENIL Q KVVMTAFADR TVVTIAHRVH TILSADLVMV LKRGAILEFD KPETLLSQKD SVFASFVRAD K

UniProtKB: ATP-binding cassette sub-family C member 8

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Macromolecule #2: 5-chloro-N-(2-{4-[(cyclohexylcarbamoyl)sulfamoyl]phenyl}ethyl)-2-...

MacromoleculeName: 5-chloro-N-(2-{4-[(cyclohexylcarbamoyl)sulfamoyl]phenyl}ethyl)-2-methoxybenzamide
type: ligand / ID: 2 / Number of copies: 1 / Formula: GBM
Molecular weightTheoretical: 494.004 Da
Chemical component information

ChemComp-GBM:
5-chloro-N-(2-{4-[(cyclohexylcarbamoyl)sulfamoyl]phenyl}ethyl)-2-methoxybenzamide / medication*YM

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Macromolecule #3: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER

MacromoleculeName: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / type: ligand / ID: 3 / Number of copies: 1 / Formula: AGS
Molecular weightTheoretical: 523.247 Da
Chemical component information

ChemComp-AGS:
PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / ATP-gamma-S, energy-carrying molecule analogue*YM

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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: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 QUANTUM (4k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: EMDB MAP
EMDB ID:

6689

Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 4.4 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 2.0) / Number images used: 348180
Initial angle assignmentType: OTHER
Final angle assignmentType: OTHER

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