[English] 日本語
![](img/lk-miru.gif)
- EMDB-0046: Single Particle Cryo-EM map of human Transferrin receptor 1 - H-F... -
+
Open data
-
Basic information
Entry | Database: EMDB / ID: EMD-0046 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Single Particle Cryo-EM map of human Transferrin receptor 1 - H-Ferritin complex at 5.5 Angstrom resolution. | |||||||||
![]() | ||||||||||
![]() |
| |||||||||
Function / homology | ![]() transferrin receptor activity / negative regulation of mitochondrial fusion / transferrin transport / Transferrin endocytosis and recycling / positive regulation of isotype switching / iron ion sequestering activity / Differentiation of keratinocytes in interfollicular epidermis in mammalian skin / : / response to copper ion / response to iron ion ...transferrin receptor activity / negative regulation of mitochondrial fusion / transferrin transport / Transferrin endocytosis and recycling / positive regulation of isotype switching / iron ion sequestering activity / Differentiation of keratinocytes in interfollicular epidermis in mammalian skin / : / response to copper ion / response to iron ion / RND1 GTPase cycle / response to manganese ion / RND2 GTPase cycle / negative regulation of ferroptosis / autolysosome / Scavenging by Class A Receptors / RHOB GTPase cycle / Golgi Associated Vesicle Biogenesis / ferroxidase / RHOC GTPase cycle / RHOJ GTPase cycle / RHOQ GTPase cycle / CDC42 GTPase cycle / RHOH GTPase cycle / RHOG GTPase cycle / transport across blood-brain barrier / intracellular sequestering of iron ion / RHOA GTPase cycle / ferroxidase activity / RAC2 GTPase cycle / positive regulation of bone resorption / RAC3 GTPase cycle / response to retinoic acid / negative regulation of fibroblast proliferation / positive regulation of T cell proliferation / clathrin-coated pit / positive regulation of B cell proliferation / Hsp70 protein binding / RAC1 GTPase cycle / ferric iron binding / osteoclast differentiation / response to nutrient / cellular response to leukemia inhibitory factor / acute-phase response / Iron uptake and transport / clathrin-coated endocytic vesicle membrane / ferrous iron binding / positive regulation of protein-containing complex assembly / HFE-transferrin receptor complex / recycling endosome / receptor internalization / positive regulation of protein localization to nucleus / recycling endosome membrane / double-stranded RNA binding / extracellular vesicle / melanosome / cellular response to xenobiotic stimulus / Cargo recognition for clathrin-mediated endocytosis / tertiary granule lumen / positive regulation of peptidyl-serine phosphorylation / Clathrin-mediated endocytosis / virus receptor activity / positive regulation of NF-kappaB transcription factor activity / iron ion transport / cytoplasmic vesicle / basolateral plasma membrane / positive regulation of canonical NF-kappaB signal transduction / intracellular iron ion homeostasis / ficolin-1-rich granule lumen / blood microparticle / early endosome / response to hypoxia / endosome membrane / intracellular signal transduction / endosome / iron ion binding / immune response / positive regulation of protein phosphorylation / negative regulation of cell population proliferation / external side of plasma membrane / intracellular membrane-bounded organelle / Neutrophil degranulation / positive regulation of gene expression / protein-containing complex binding / negative regulation of apoptotic process / protein kinase binding / perinuclear region of cytoplasm / cell surface / protein homodimerization activity / RNA binding / extracellular space / extracellular exosome / extracellular region / identical protein binding / membrane / nucleus / plasma membrane / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 5.5 Å | |||||||||
![]() | Testi C / Montemiglio LC / Vallone B / Des Georges A / Boffi A / Mancia F / Baiocco P | |||||||||
![]() | ![]() 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 |
|
-
Structure visualization
Movie |
![]() |
---|---|
Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
-
Downloads & links
-EMDB archive
Map data | ![]() | 59.5 MB | ![]() | |
---|---|---|---|---|
Header (meta data) | ![]() ![]() | 11.6 KB 11.6 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 10.7 KB | Display | ![]() |
Images | ![]() | 283.9 KB | ||
Masks | ![]() | 64 MB | ![]() | |
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6gsrMUC ![]() 0140C ![]() 6h5iC M: atomic model generated by this map U: unfit; in different coordinate system*YM C: citing same article ( |
---|---|
Similar structure data |
-
Links
EMDB pages | ![]() ![]() |
---|---|
Related items in Molecule of the Month |
-
Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Voxel size | X=Y=Z: 1.33 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
|
-Supplemental data
-Mask #1
File | ![]() | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & Slices |
| ||||||||||||
Density Histograms |
-
Sample components
-Entire : Complex of human Transferrin Receptor 1 and human H-chain Ferritin
Entire | Name: Complex of human Transferrin Receptor 1 and human H-chain Ferritin |
---|---|
Components |
|
-Supramolecule #1: Complex of human Transferrin Receptor 1 and human H-chain Ferritin
Supramolecule | Name: Complex of human Transferrin Receptor 1 and human H-chain Ferritin type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
---|---|
Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 675 KDa |
-Macromolecule #1: Ferritin heavy chain
Macromolecule | Name: Ferritin heavy chain / type: protein_or_peptide / ID: 1 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: ![]() |
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: human Transferrin Receptor 1
Macromolecule | Name: human Transferrin Receptor 1 / type: protein_or_peptide / ID: 2 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: ![]() |
Recombinant expression | Organism: ![]() |
Sequence | String: LYWDDLKRKL SEKLDSTDFT STIKLLNENS YVPREAGSQK DENLALYVEN EFREFKLSKV WRDQHFVKIQ VKDSAQNSVI IVDKNGRLV YLVENPGGYV AYSKAATVTG KLVHANFGTK KDFEDLYTPV NGSIVIVRAG KITFAEKVAN AESLNAIGVL I YMDQTKFP ...String: LYWDDLKRKL SEKLDSTDFT STIKLLNENS YVPREAGSQK DENLALYVEN EFREFKLSKV WRDQHFVKIQ VKDSAQNSVI IVDKNGRLV YLVENPGGYV AYSKAATVTG KLVHANFGTK KDFEDLYTPV NGSIVIVRAG KITFAEKVAN AESLNAIGVL I YMDQTKFP IVNAELSFFG HAHLGTGDPY TPGFPSFNHT QFPPSRSSGL PNIPVQTISR AAAEKLFGNM EGDCPSDWKT DS TCRMVTS ESKNVKLTVS NVLKEIKILN IFGVIKGFVE PDHYVVVGAQ RDAWGPGAAK SGVGTALLLK LAQMFSDMVL KDG FQPSRS IIFASWSAGD FGSVGATEWL EGYLSSLHLK AFTYINLDKA VLGTSNFKVS ASPLLYTLIE KTMQNVKHPV TGQF LYQDS NWASKVEKLT LDNAAFPFLA YSGIPAVSFC FCEDTDYPYL GTTMDTYKEL IERIPELNKV ARAAAEVAGQ FVIKL THDV ELNLDYEEYN SQLLSFVRDL NQYRADIKEM GLSLQWLYSA RGDFFRATSR LTTDFGNAEK TDRFVMKKLN DRVMRV EYH FLSPYVSPKE SPFRHVFWGS GSHTLPALLE NLKLRKQNNG AFNETLFRNQ LALATWTIQG AANALSGDVW DIDNEF |
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
![]() | single particle reconstruction |
Aggregation state | particle |
-
Sample preparation
Concentration | 0.2 mg/mL |
---|---|
Buffer | pH: 7.2 |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K |
-
Electron microscopy
Microscope | FEI TITAN KRIOS |
---|---|
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 40.0 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 |
+
Image processing
-Atomic model buiding 1
Refinement | Protocol: RIGID BODY FIT |
---|---|
Output model | ![]() PDB-6gsr: |