+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-20815 | |||||||||
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Title | Structure of M-6-P/IGFII Receptor at pH 4.5 | |||||||||
Map data | ||||||||||
Sample |
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Function / homology | Function and homology information kringle domain binding / insulin-like growth factor binding / lysosomal transport / D-mannose binding / endocytic vesicle / phosphoprotein binding / trans-Golgi network / late endosome / signaling receptor activity / endosome membrane ...kringle domain binding / insulin-like growth factor binding / lysosomal transport / D-mannose binding / endocytic vesicle / phosphoprotein binding / trans-Golgi network / late endosome / signaling receptor activity / endosome membrane / Golgi membrane / Golgi apparatus / cell surface / plasma membrane Similarity search - Function | |||||||||
Biological species | Bos taurus (cattle) / Bovine (cattle) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.46 Å | |||||||||
Authors | Wang R / Qi X / Li X | |||||||||
Citation | Journal: Sci Adv / Year: 2020 Title: Marked structural rearrangement of mannose 6-phosphate/IGF2 receptor at different pH environments. Authors: Rong Wang / Xiaofeng Qi / Philip Schmiege / Elias Coutavas / Xiaochun Li / Abstract: Many cell surface receptors internalize their ligands and deliver them to endosomes, where the acidic pH causes the ligand to dissociate. The liberated receptor returns to the cell surface in a ...Many cell surface receptors internalize their ligands and deliver them to endosomes, where the acidic pH causes the ligand to dissociate. The liberated receptor returns to the cell surface in a process called receptor cycling. The structural basis for pH-dependent ligand dissociation is not well understood. In some receptors, the ligand binding domain is composed of multiple repeated sequences. The insulin-like growth factor 2 receptor (IGF2R) contains 15 β strand-rich repeat domains. The overall structure and the mechanism by which IGF2R binds IGF2 and releases it are unknown. We used cryo-EM to determine the structures of the IGF2R at pH 7.4 with IGF2 bound and at pH 4.5 in the ligand-dissociated state. The results reveal different arrangements of the receptor in different pH environments mediated by changes in the interactions between the repeated sequences. These results have implications for our understanding of ligand release from receptors in endocytic compartments. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_20815.map.gz | 78.4 MB | EMDB map data format | |
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Header (meta data) | emd-20815-v30.xml emd-20815.xml | 10.7 KB 10.7 KB | Display Display | EMDB header |
Images | emd_20815.png | 47.7 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-20815 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-20815 | HTTPS FTP |
-Validation report
Summary document | emd_20815_validation.pdf.gz | 455.6 KB | Display | EMDB validaton report |
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Full document | emd_20815_full_validation.pdf.gz | 455.2 KB | Display | |
Data in XML | emd_20815_validation.xml.gz | 5.3 KB | Display | |
Data in CIF | emd_20815_validation.cif.gz | 6.1 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-20815 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-20815 | HTTPS FTP |
-Related structure data
Related structure data | 6um1MC 6um2C M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_20815.map.gz / Format: CCP4 / Size: 83.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
-Entire : IGFIIR
Entire | Name: IGFIIR |
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Components |
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-Supramolecule #1: IGFIIR
Supramolecule | Name: IGFIIR / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1 |
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Source (natural) | Organism: Bos taurus (cattle) |
-Macromolecule #1: Cation-independent mannose-6-phosphate receptor
Macromolecule | Name: Cation-independent mannose-6-phosphate receptor / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Bovine (cattle) |
Molecular weight | Theoretical: 274.830125 KDa |
Sequence | String: MEAAAGRSSH LGPAPAGRPP RCPLLLQLQL LLLLLLLPPG WVPGAAGTQG AEFPELCSYT WEAVDTKNNM LYKINICGNM GVAQCGPSS AVCMHDLKTD SFHSVGDSLL KTASRSLLEF NTTVNCKQQN HKIQSSITFL CGKTLGTPEF VTATDCVHYF E WRTTAACK ...String: MEAAAGRSSH LGPAPAGRPP RCPLLLQLQL LLLLLLLPPG WVPGAAGTQG AEFPELCSYT WEAVDTKNNM LYKINICGNM GVAQCGPSS AVCMHDLKTD SFHSVGDSLL KTASRSLLEF NTTVNCKQQN HKIQSSITFL CGKTLGTPEF VTATDCVHYF E WRTTAACK KNIFKANKEV PCYAFDRELK KHDLNPLIKT SGAYLVDDSD PDTSLFINVC RDIEVLRASS PQVRVCPTGA AA CLVRGDR AFDVGRPQEG LKLVSNDRLV LSYVKEGAGQ PDFCDGHSPA VTITFVCPSE RREGTIPKLT AKSNCRFEIE WVT EYACHR DYLESRSCSL SSAQHDVAVD LQPLSRVEAS DSLFYTSEAD EYTYYLSICG GSQAPICNKK DAAVCQVKKA DSTQ VKVAG RPQNLTLRYS DGDLTLIYFG GEECSSGFQR MSVINFECNQ TAGNNGRGAP VFTGEVDCTY FFTWDTKYAC VHEKE ALLC GVSDGKQRFD LSALARHSEL EQNWEAVDGS QREAEKKHFF INICHRVLQT GQARGCPEDA AVCAVDKNGS KNLGRF ISS PTREKGNIQL SYSDGDECGG GQKIITNITL MCKPGDLESA PVLTTSRADG CFYEFEWRTA AACVLSRTEG DNCTVFD SQ AGFSFDLTPL TKKDAYKVET DKYEFHINVC GPVSVGACPP DSGACQVSRS DRKSWNLGRS NAKLSYYDGM IQLTYRDG T PYNNEKRTPR ATLITFLCDR DAGVGFPEYQ EEDNSTYNFR WYTSYACPEE PLECIVTDPV TLDQYDLSRL AKSEGGPGG NWYSLDNGGA RSTWRKYYIN VCRPLNPVPG CDRYASACQM KYQGEQGSYS ETVSISNLGV AKTGPMVEDS GSLLLEYVNG SACTTSDQR RTTYTTRIHL VCSTGSLYTH PIFSLNWECV VSFLWNTAAA CPIRITTDID QVCSIKDPNS GYVFDLNPLN N SRGYVVLG IGKTFLFNVC GDMPACGTLD GKPASGCEAE VQMDDMKTLK PGRLVGLEKS LQLSTEGFIT LNYTGLPSHP NG RADAFII RFVCNDDVYP GTPKFLHQDI DSSLGIRDTF FEFETALACV PSPVDCQVTD PAGNEYDLSG LSKARKPWTA VDT FDEGKK RTFYLSVCTP LPYIPGCHGT AVGCCLVTED SKLNLGVVQI SPQVGANGSL SLVYVNGDKC KNQRFSTRIN LECA HTTGS PTFQLQNDCE YVFLWRTVEA CPVVRAEGDY CEVRDPRHGN LYNLIPLGLN DTVVRAGEYT YYFRVCGELT SGVCP TSDK SKVISSCQEK RGPQGFQKVA GLFNQKLTYE NGVLKMNYTG GDTCHKVYQR STTIFFYCDR STQAPVFLQE TSDCSY LFE WRTQYACPPY DLTECSFKNE AGETYDLSSL SRYSDNWEAV TGTGSTEHYL INVCKSLSPQ AGSDPCPPEA AVCLLGG PK PVNLGRVRDS PQWSQGLTLL KYVDGDLCPD QIRKKSTTIR FTCSESHVNS RPMFISAVED CEYTFSWPTA AACAVKSN V HDDCQVTNPA TGHLFDLSSL SGRAGFTAAY SEKGLVYLSV CGDNENCANG VGACFGQTRI SVGKASKRLT YVDQVLQLV YEGGSPCPSK TGLSYKSVIS FVCRPEVGPT NRPMLISLDK RTCTLFFSWH TPLACEQTTE CSVRNGSSLI DLSPLIHRTG GYEAYDESE DDGSDTSPDF YINICQPLNP MHGLACPAGT AVCKVPVDGP PIDIGRVAGP PILNPIANEV YLNFESSTPC L ADRHFNYT SLITFHCKRG VSMGTPKLLR TSVCDFVFEW ETPLVCPDEV KTDGCSLTDE QLYYSFNLSS LSKSTFKVTR GP HTYSVGV CTAAAGLDEG GCKDGAVCLL SGSKGASFGR LASMKLDYRH QDEAVILSYA NGDTCPPETE DGEPCVFPFV FNG KSYEEC VVESRARLWC ATTANYDRDH EWGFCKHSTS HRTSVIIFKC DEDADVGRPQ VFSEVRGCEV TFEWKTKVVC PPKK MECKF VQKHRTYDLR LLSSLTGSWS FVHNGASYYI NLCQKIYKGP QDCSERASVC KKSTSGEVQV LGLVHTQKLD VVDDR VIVT YSKGHYCGDN KTASAVIELT CAKTVGRPSF TRFDVDSCTY HFSWDSRAAC AVKPQEVQMV NGTITNPANG RSFSLG DIY FKRFSASGDV RTNGDRYIYE IQLSSITGSS SPACSGASIC QRKANDQHFS RKVGTSNQTR YYVQDGDLDV VFTSSSK CG KDKTKSVSST IFFHCDPLVK DGIPEFSHET ADCQYLFSWH TSAVCPLGAG FDEEIAGDDA QEHKGLSERS QAVGAVLS L LLVALTACLL TLLLYKKERR EMVMSRLTNC CRRSANVSYK YSKVNKEEEA DENETEWLME EIQPPAPRPG KEGQENGHV AAKSVRAADT LSALHGDEQD SEDEVLTLPE VKVRPPGRAP GAEGGPPLRP LPRKAPPPLR ADDRVGLVRG EPARRGRPRA AATPISTFH DDSDEDLLHV |
-Macromolecule #4: 2-acetamido-2-deoxy-beta-D-glucopyranose
Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 4 / Number of copies: 3 / Formula: NAG |
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Molecular weight | Theoretical: 221.208 Da |
Chemical component information | ChemComp-NAG: |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 4.5 |
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Vitrification | Cryogen name: ETHANE |
-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: 80.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: DARK FIELD |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.46 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 128789 |
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Initial angle assignment | Type: ANGULAR RECONSTITUTION |
Final angle assignment | Type: ANGULAR RECONSTITUTION |