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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-30666 | |||||||||
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Title | Cryo_EM structure of delta N-NPC1L1-CLR | |||||||||
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Function / homology | ![]() vitamin transport / cholesterol import / lipid transporter activity / response to muscle activity / heterocyclic compound binding / brush border membrane / response to xenobiotic stimulus / apical plasma membrane Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.69 Å | |||||||||
![]() | Hu M / Sun S | |||||||||
![]() | ![]() Title: Structural insights into the mechanism of human NPC1L1-mediated cholesterol uptake. Authors: Miaoqing Hu / Fan Yang / Yawen Huang / Xin You / Desheng Liu / Shan Sun / Sen-Fang Sui / ![]() Abstract: Niemann-Pick C1-like 1 (NPC1L1) protein plays a central role in the intestinal cholesterol absorption and is the target of a drug, ezetimibe, which inhibits NPC1L1 to reduce cholesterol absorption. ...Niemann-Pick C1-like 1 (NPC1L1) protein plays a central role in the intestinal cholesterol absorption and is the target of a drug, ezetimibe, which inhibits NPC1L1 to reduce cholesterol absorption. Here, we present cryo-electron microscopy structures of human NPC1L1 in apo state, cholesterol-enriched state, and ezetimibe-bound state to reveal molecular details of NPC1L1-mediated cholesterol uptake and ezetimibe inhibition. Comparison of these structures reveals that the sterol-sensing domain (SSD) could respond to the cholesterol level alteration by binding different number of cholesterol molecules. Upon increasing cholesterol level, SSD binds more cholesterol molecules, which, in turn, triggers the formation of a stable structural cluster in SSD, while binding of ezetimibe causes the deformation of the SSD and destroys the structural cluster, leading to the inhibition of NPC1L1 function. These results provide insights into mechanisms of NPC1L1 function and ezetimibe action and are of great significance for the development of new cholesterol absorption inhibitors. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 116.9 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 11.1 KB 11.1 KB | Display Display | ![]() |
Images | ![]() | 112.6 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7dfwMC ![]() 7df8C ![]() 7dfzC M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Voxel size | X=Y=Z: 1.091 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : complex of delta N-NPC1L1 with CLR
Entire | Name: complex of delta N-NPC1L1 with CLR |
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Components |
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-Supramolecule #1: complex of delta N-NPC1L1 with CLR
Supramolecule | Name: complex of delta N-NPC1L1 with CLR / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() |
Recombinant expression | Organism: ![]() |
-Macromolecule #1: NPC1-like intracellular cholesterol transporter 1
Macromolecule | Name: NPC1-like intracellular cholesterol transporter 1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 141.211938 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MAEAGLRGWL LWALLLRLAQ SEPYTTIHQP GYCAFYDECG KNPELSGSLM TLSNVSCLSN TPARKITGDH LILLQKICPR LYTGPNTQA CCSAKQLVSL EASLSITKAL LTRCPACSDN FVNLHCHNTC SPNQSLFINV TRVAQLGAGQ LPAVVAYEAF Y QHSFAEQS ...String: MAEAGLRGWL LWALLLRLAQ SEPYTTIHQP GYCAFYDECG KNPELSGSLM TLSNVSCLSN TPARKITGDH LILLQKICPR LYTGPNTQA CCSAKQLVSL EASLSITKAL LTRCPACSDN FVNLHCHNTC SPNQSLFINV TRVAQLGAGQ LPAVVAYEAF Y QHSFAEQS YDSCSRVRVP AAATLAVGTM CGVYGSALCN AQRWLNFQGD TGNGLAPLDI TFHLLEPGQA VGSGIQPLNE GV ARCNESQ GDDVATCSCQ DCAASCPAIA RPQALDSTFY LGQMPGSLVL IIILCSVFAV VTILLVGFRV APARDKSKMV DPK KGTSLS DKLSFSTHTL LGQFFQGWGT WVASWPLTIL VLSVIPVVAL AAGLVFTELT TDPVELWSAP NSQARSEKAF HDQH FGPFF RTNQVILTAP NRSSYRYDSL LLGPKNFSGI LDLDLLLELL ELQERLRHLQ VWSPEAQRNI SLQDICYAPL NPDNT SLYD CCINSLLQYF QNNRTLLLLT ANQTLMGQTS QVDWKDHFLY CANAPLTFKD GTALALSCMA DYGAPVFPFL AIGGYK GKD YSEAEALIMT FSLNNYPAGD PRLAQAKLWE EAFLEEMRAF QRRMAGMFQV TFMAERSLED EINRTTAEDL PIFATSY IV IFLYISLALG SYSSWSRVMV DSKATLGLGG VAVVLGAVMA AMGFFSYLGI RSSLVILQVV PFLVLSVGAD NIFIFVLE Y QRLPRRPGEP REVHIGRALG RVAPSMLLCS LSEAICFFLG ALTPMPAVRT FALTSGLAVI LDFLLQMSAF VALLSLDSK RQEASRLDVC CCVKPQELPP PGQGEGLLLG FFQKAYAPFL LHWITRGVVL LLFLALFGVS LYSMCHISVG LDQELALPKD SYLLDYFLF LNRYFEVGAP VYFVTTLGYN FSSEAGMNAI CSSAGCNNFS FTQKIQYATE FPEQSYLAIP ASSWVDDFID W LTPSSCCR LYISGPNKDK FCPSTVNSLN CLKNCMSITM GSVRPSVEQF HKYLPWFLND RPNIKCPKGG LAAYSTSVNL TS DGQVLAS RFMAYHKPLK NSQDYTEALR AARELAANIT ADLRKVPGTD PAFEVFPYTI TNVFYEQYLT ILPEGLFMLS LCL VPTFAV SCLLLGLDLR SGLLNLLSIV MILVDTVGFM ALWGISYNAV SLINLVSAVG MSVEFVSHIT RSFAISTKPT WLER AKEAT ISMGSAVFAG VAMTNLPGIL VLGLAKAQLI QIFFFRLNLL ITLLGLLHGL VFLPVILSYV GPDVNPALAL EQKRA EEAV AAVM |
-Macromolecule #5: 2-acetamido-2-deoxy-beta-D-glucopyranose
Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 5 / Number of copies: 7 / Formula: NAG |
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Molecular weight | Theoretical: 221.208 Da |
Chemical component information | ![]() ChemComp-NAG: |
-Macromolecule #6: O-[(R)-{[(2R)-2,3-bis(octadecanoyloxy)propyl]oxy}(hydroxy)phospho...
Macromolecule | Name: O-[(R)-{[(2R)-2,3-bis(octadecanoyloxy)propyl]oxy}(hydroxy)phosphoryl]-L-serine type: ligand / ID: 6 / Number of copies: 1 / Formula: P5S |
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Molecular weight | Theoretical: 792.075 Da |
Chemical component information | ![]() ChemComp-P5S: |
-Macromolecule #7: DODECYL-BETA-D-MALTOSIDE
Macromolecule | Name: DODECYL-BETA-D-MALTOSIDE / type: ligand / ID: 7 / Number of copies: 1 / Formula: LMT |
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Molecular weight | Theoretical: 510.615 Da |
Chemical component information | ![]() ChemComp-LMT: |
-Macromolecule #8: CHOLESTEROL
Macromolecule | Name: CHOLESTEROL / type: ligand / ID: 8 / Number of copies: 6 / Formula: CLR |
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Molecular weight | Theoretical: 386.654 Da |
Chemical component information | ![]() ChemComp-CLR: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.4 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: OTHER / Imaging mode: OTHER |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 2.69 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 1915958 |
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Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |