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- EMDB-0140: Single Particle Cryo-EM map of human Transferrin receptor 1 - H-F... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-0140 | |||||||||
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Title | Single Particle Cryo-EM map of human Transferrin receptor 1 - H-Ferritin complex. | |||||||||
![]() | Map at 3.9 A of the human CD71 receptor and human H-Ferritin | |||||||||
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Function / homology | ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | ![]() ![]() | |||||||||
![]() | Testi C / Montemiglio LC / Vallone B / Des Georges A / Boffi A / Mancia F / Baiocco P / Savino C | |||||||||
![]() | ![]() Title: Cryo-EM structure of the human ferritin-transferrin receptor 1 complex. Authors: Linda Celeste Montemiglio / Claudia Testi / Pierpaolo Ceci / Elisabetta Falvo / Martina Pitea / Carmelinda Savino / Alessandro Arcovito / Giovanna Peruzzi / Paola Baiocco / Filippo Mancia / ...Authors: Linda Celeste Montemiglio / Claudia Testi / Pierpaolo Ceci / Elisabetta Falvo / Martina Pitea / Carmelinda Savino / Alessandro Arcovito / Giovanna Peruzzi / Paola Baiocco / Filippo Mancia / Alberto Boffi / Amédée des Georges / Beatrice Vallone / ![]() ![]() Abstract: Human transferrin receptor 1 (CD71) guarantees iron supply by endocytosis upon binding of iron-loaded transferrin and ferritin. Arenaviruses and the malaria parasite exploit CD71 for cell invasion ...Human transferrin receptor 1 (CD71) guarantees iron supply by endocytosis upon binding of iron-loaded transferrin and ferritin. Arenaviruses and the malaria parasite exploit CD71 for cell invasion and epitopes on CD71 for interaction with transferrin and pathogenic hosts were identified. Here, we provide the molecular basis of the CD71 ectodomain-human ferritin interaction by determining the 3.9 Å resolution single-particle cryo-electron microscopy structure of their complex and by validating our structural findings in a cellular context. The contact surfaces between the heavy-chain ferritin and CD71 largely overlap with arenaviruses and Plasmodium vivax binding regions in the apical part of the receptor ectodomain. Our data account for transferrin-independent binding of ferritin to CD71 and suggest that select pathogens may have adapted to enter cells by mimicking the ferritin access gate. | |||||||||
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 | ![]() | 59.4 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 14.1 KB 14.1 KB | Display Display | ![]() |
Images | ![]() | 88.1 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6h5iMC ![]() 0046C ![]() 6gsrC 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
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Map at 3.9 A of the human CD71 receptor and human H-Ferritin | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.33 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 the ectodomain of human Transferrin Receptor 1 and H-c...
Entire | Name: Complex of the ectodomain of human Transferrin Receptor 1 and H-chain Ferritin |
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Components |
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-Supramolecule #1: Complex of the ectodomain of human Transferrin Receptor 1 and H-c...
Supramolecule | Name: Complex of the ectodomain of human Transferrin Receptor 1 and H-chain Ferritin type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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-Supramolecule #2: C H-chain Ferritin
Supramolecule | Name: C H-chain Ferritin / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() ![]() |
Recombinant expression | Organism: ![]() ![]() ![]() |
-Supramolecule #3: Ectodomain of human Transferrin Receptor 1
Supramolecule | Name: Ectodomain of human Transferrin Receptor 1 / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2 |
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Source (natural) | Organism: ![]() ![]() |
Recombinant expression | Organism: ![]() ![]() |
-Macromolecule #1: Ferritin heavy chain
Macromolecule | Name: Ferritin heavy chain / type: protein_or_peptide / ID: 1 / Number of copies: 24 / Enantiomer: LEVO / EC number: ![]() |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 20.116547 KDa |
Recombinant expression | Organism: ![]() ![]() ![]() |
Sequence | String: TSQVRQNYHQ DSEAAINRQI NLELYASYVY LSMSYYFDRD DVALKNFAKY FLHQSHEERE HAEKLMKLQN QRGGRIFLQD IKKPDCDDW ESGLNAMECA LHLEKNVNQS LLELHKLATD KNDPHLCDFI ETHYLNEQVK AIKELGDHVT NLRKMGAPES G LAEYLFDK HTLG |
-Macromolecule #2: Transferrin receptor protein 1
Macromolecule | Name: Transferrin receptor protein 1 / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 71.807258 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: RLYWDDLKRK LSEKLDSTDF TSTIKLLNEN SYVPREAGSQ KDENLALYVE NQFREFKLSK VWRDQHFVKI QVKDSAQNSV IIVDKNGRL VYLVENPGGY VAYSKAATVT GKLVHANFGT KKDFEDLYTP VNGSIVIVRA GKITFAEKVA NAESLNAIGV L IYMDQTKF ...String: RLYWDDLKRK LSEKLDSTDF TSTIKLLNEN SYVPREAGSQ KDENLALYVE NQFREFKLSK VWRDQHFVKI QVKDSAQNSV IIVDKNGRL VYLVENPGGY VAYSKAATVT GKLVHANFGT KKDFEDLYTP VNGSIVIVRA GKITFAEKVA NAESLNAIGV L IYMDQTKF PIVNAELSFF GHAHLGTGDP YTPGFPSFNH TQFPPSRSSG LPNIPVQTIS RAAAEKLFGN MEGDCPSDWK TD STCRMVT SESKNVKLTV SNVLKEIKIL NIFGVIKGFV EPDHYVVVGA QRDAWGPGAA KSGVGTALLL KLAQMFSDMV LKD GFQPSR SIIFASWSAG DFGSVGATEW LEGYLSSLHL KAFTYINLDK AVLGTSNFKV SASPLLYTLI EKTMQNVKHP VTGQ FLYQD SNWASKVEKL TLDNAAFPFL AYSGIPAVSF CFCEDTDYPY LGTTMDTYKE LIERIPELNK VARAAAEVAG QFVIK LTHD VELNLDYERY NSQLLSFVRD LNQYRADIKE MGLSLQWLYS ARGDFFRATS RLTTDFGNAE KTDRFVMKKL NDRVMR VEY HFLSPYVSPK ESPFRHVFWG SGSHTLPALL ENLKLRKQNN GAFNETLFRN QLALATWTIQ GAANALSGDV WDIDNEF |
-Experimental details
-Structure determination
Method | ![]() |
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Aggregation state | particle |
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Sample preparation
Concentration | 0.2 mg/mL |
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Buffer | pH: 7.2 |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: OTHER / Imaging mode: OTHER |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 40.0 e/Å2 |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Particle selection | Number selected: 73700 |
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CTF correction | Software - Name: Gctf |
Startup model | Type of model: EMDB MAP EMDB ID: |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final 3D classification | Number classes: 8 / Software - Name: RELION |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |
Final reconstruction | Number classes used: 3 / Applied symmetry - Point group: O (octahedral![]() |