| 1993 |
Eps15 is a substrate of the EGF receptor kinase; EGFR directly phosphorylates Eps15 on tyrosine in vitro and in vivo, and overexpression of Eps15 transforms NIH 3T3 cells, implicating it in mitogenic signaling. |
Expression cloning, in vitro kinase assay, NIH 3T3 transformation assay |
Molecular and cellular biology |
High |
7689153
|
| 1995 |
Eps15 is constitutively associated with the plasma membrane clathrin adaptor complex AP-2 (alpha- and beta-adaptins), suggesting a role in clathrin-mediated endocytosis. |
Co-immunoprecipitation with anti-Eps15 antibody, GST pull-down, N-terminal sequencing of co-precipitated proteins |
The Journal of cell biology |
High |
8557749
|
| 1995 |
The EH (Eps15 Homology) domain, spanning ~70 amino acids in the N-terminus of Eps15, is a protein-protein interaction module that binds cytosolic proteins; a related protein, Eps15R, was identified using an EH domain probe. |
Domain mapping, filter-binding assays, cDNA cloning with EH domain probe |
Proceedings of the National Academy of Sciences of the United States of America |
Medium |
7568168
|
| 1995 |
The Crk SH3 domain binds specifically to a conserved proline-rich P-X-L-P-X-K motif in Eps15, and Crk can facilitate stable association of Eps15 with activated EGFR in vitro. |
Expression library screen, co-precipitation from cell lysates, in vitro binding with translated proteins |
The Journal of biological chemistry |
Medium |
7797522
|
| 1996 |
Eps15 localizes to the rim/edge of clathrin-coated pits and budding coated vesicles (not uniformly distributed like AP-2), and virtually all cellular Eps15 is associated with AP-2 in a complex unaffected by EGF treatment. |
Immunofluorescence microscopy, immunoelectron microscopy, subcellular fractionation |
The Journal of biological chemistry |
High |
8910509
|
| 1997 |
Eps15 is monoubiquitinated upon EGF stimulation, representing a second form of EGF-induced covalent modification distinct from tyrosine phosphorylation; ubiquitination but not tyrosine phosphorylation was inhibited when EGF receptor internalization was blocked. |
Western blotting, protein sequencing, inhibition of receptor internalization |
The Journal of biological chemistry |
Medium |
9162018
|
| 1997 |
The AP-2 binding region of Eps15 maps to its C-terminal ~80 amino acids with at least three determinants (residues 650-660, 680-690, 720-730), and AP-2 binds Eps15 through the C-terminal ear domain (alpha-ear) of its alpha-adaptin subunit. |
GST fusion protein pull-downs, deletion/mutation mapping |
Cancer research |
Medium |
9000562
|
| 1997 |
Microinjection of antibodies against Eps15 and Eps15R inhibits internalization of EGF and transferrin, demonstrating that both are essential components of the endocytic machinery. |
Antibody microinjection, receptor internalization assays |
Cancer research |
Medium |
9407958
|
| 1997 |
Eps15 is constitutively oligomerized via its central coiled-coil region (residues 321-520); large Eps15 oligomers co-immunoprecipitate with AP-2 more efficiently than dimers. |
Chemical cross-linking, size-exclusion chromatography, GST fusion domain mapping |
The Journal of biological chemistry |
Medium |
9182572
|
| 1997 |
Synaptojanin-170 binds Eps15 through three NPF (Asn-Pro-Phe) repeats in its C-terminal region, interacting with the EH domains of Eps15, and synaptojanin 1 is concentrated at clathrin-coated endocytic intermediates in nerve terminals. |
In vitro binding assay, immunolocalization |
FEBS letters |
Medium |
9428629
|
| 1997 |
EGF receptor activation leads to tyrosine phosphorylation of Eps15 in a receptor-specific manner (PDGF and insulin do not phosphorylate it); the cytoplasmic regulatory domain of EGFR is essential for Eps15 binding, and Eps15 is present in plasma membrane and endosomal fractions but not early endosomes (Rab4/Rab5-negative). |
Co-immunoprecipitation, subcellular fractionation, immunofluorescence with truncated EGFR mutants |
The Journal of cell biology |
Medium |
9049247
|
| 1998 |
Overexpression of the AP-2-binding C-terminal domain of Eps15 (fused to GFP) strongly inhibits transferrin and EGF endocytosis; the inhibition requires intact AP-2-binding sites, demonstrating that AP-2/Eps15 interaction is required for receptor-mediated endocytosis. |
GFP fusion protein overexpression, transferrin/EGF internalization assays, cell-free coated vesicle formation assay with GST fusion proteins |
The Journal of cell biology |
High |
9490719
|
| 1998 |
The structure of the central EH domain (EH2) of Eps15 was solved by NMR; it consists of a pair of EF-hand motifs (the second binds calcium), and NPF peptide binds in a hydrophobic pocket between two alpha-helices via a critical aromatic interaction confirmed by structure-based mutagenesis. |
Heteronuclear NMR spectroscopy, structure-based mutagenesis |
Science |
High |
9721102
|
| 1998 |
During clathrin coat assembly in vitro, Eps15 dissociates from AP-2; coated vesicles isolated from brain do not contain detectable Eps15, suggesting that clathrin addition at the growing pit rim releases Eps15 from AP-2. |
In vitro clathrin-AP-2 coat assembly assay, immunoisolation of brain-derived coated vesicles |
The Journal of biological chemistry |
Medium |
9442014
|
| 1999 |
An Eps15 mutant lacking EH domains causes loss of AP-2 and clathrin punctate distribution at the plasma membrane, redistribution of dynamin, and strong inhibition of transferrin endocytosis, indicating Eps15 is required for coated pit assembly and AP-2 docking at the plasma membrane. |
GFP-Eps15 mutant overexpression, immunofluorescence, transferrin uptake assay |
Journal of cell science |
High |
10194409
|
| 1999 |
Upon EGFR activation, Eps15 undergoes dramatic relocalization: first to the plasma membrane, then to intracellular endocytic compartments (excluding coated vesicles), with tyrosine phosphorylation occurring both at the plasma membrane and in a nocodazole-sensitive compartment; relocalization is independent of direct EGFR binding or AP-2 binding. |
Immunofluorescence, immunoelectron microscopy, nocodazole treatment |
Molecular biology of the cell |
Medium |
9950686
|
| 1999 |
The EH domain-mediated interaction between Eps15 and Hrb (HIV Rev cofactor) connects the endocytic machinery to nucleocytoplasmic transport; Eps15 and Eps15R synergize with Hrb to enhance Rev-mediated export, and this requires EH-mediated association occurring in the cytoplasm. |
Co-immunoprecipitation, Rev export functional assay, localization studies |
The Journal of cell biology |
Medium |
10613896
|
| 1999 |
Mitotic phosphorylation of Eps15 inhibits its binding to the appendage domain of alpha-adaptin (AP-2); in nerve terminals, Eps15 undergoes constitutive phosphorylation and depolarization-dependent dephosphorylation, with dephosphorylation enhancing AP-2 binding in brain extracts. |
Phosphorylation state analysis, in vitro binding assay, synaptosome stimulation experiments |
The Journal of biological chemistry |
Medium |
9920862
|
| 1999 |
The EH1 domain of Eps15 adopts a paired EF-hand fold similar to S100 proteins; an NPF-containing peptide from RAB binds in a hydrophobic pocket formed by conserved Trp and Leu residues. |
Multidimensional heteronuclear NMR spectroscopy, peptide binding studies |
Biochemistry |
High |
10471276
|
| 2000 |
Tyrosine phosphorylation of Eps15 at Tyr-850 is required for EGFR internalization but not for constitutive transferrin receptor endocytosis; a phosphorylation-negative Eps15 mutant acts as dominant negative specifically on EGFR endocytosis, and phosphotyrosine in Eps15 serves as a docking site for a phosphotyrosine-binding protein. |
Site-directed mutagenesis (Y850F), dominant-negative overexpression, phosphopeptide inhibition assays |
The Journal of cell biology |
High |
10953014
|
| 2000 |
CCP targeting of Eps15 requires collaboration between EH domains and AP-2-binding sites in the C-terminus; neither EH domains alone, the coiled-coil domain, nor the AP-2-binding domain alone are sufficient for CCP targeting; AP-2 binding sites are critical for plasma membrane localization. |
GFP-Eps15 deletion mutant transfection, immunofluorescence, transferrin uptake flow cytometry |
The Journal of biological chemistry |
Medium |
10652316
|
| 2000 |
NMR structure of the third EH domain (EH3) of Eps15 reveals that both FW and NPF sequences bind in the same hydrophobic pocket; EH3 binds calcium in the first EF-hand (unlike EH2); point mutations alter preference for FW vs. NPF motifs. |
NMR spectroscopy, chemical shift mapping, point mutagenesis, peptide binding assays |
Biochemistry |
High |
10757979
|
| 2000 |
Hrs-2 physically interacts with Eps15 in a calcium-dependent manner inhibited by SNAP-25 and alpha-adaptin; this interaction regulates receptor-mediated endocytosis, placing Hrs-2 in a biochemical pathway Hrs-2→Eps15→AP-2. |
Co-immunoprecipitation, in vitro binding, endocytosis inhibition assay, immunoelectron microscopy |
The Journal of biological chemistry |
Medium |
10809762
|
| 2001 |
The C. elegans Eps15 ortholog EHS-1 localizes to synaptic regions; ehs-1-impaired worms show depletion of synaptic vesicles and neurotransmission defects; genetic interaction with dynamin mutant dyn-1 worsens locomotion defects, and mammalian Eps15 and dynamin interact in vivo. |
C. elegans genetics, epistasis with dynamin mutant, co-immunoprecipitation of mammalian proteins, immunolocalization |
Nature cell biology |
High |
11483962
|
| 2002 |
The second UIM (ubiquitin-interacting motif) of Eps15 and Eps15R is essential for their monoubiquitination; the UIM does not contain the ubiquitin acceptor site but functions as a recruitment site for the ubiquitination machinery. |
UIM deletion/mutation analysis, ubiquitination assays in cells |
The Journal of biological chemistry |
Medium |
12072436
|
| 2002 |
The gamma-adaptin appendage domain binds Eps15 at the same site as gamma-synergin; crystal structure of the gamma-appendage defines this binding surface, revealing that Eps15 is a ligand of AP-1 at the Golgi. |
1.8 Å crystal structure, point mutation binding analysis |
Structure |
High |
12176391
|
| 2002 |
Eps15 contains a leucine-rich nuclear export signal (NES) in its last ~25 amino acids that binds exportin CRM1 in a leucine-dependent manner; this NES prevents nuclear accumulation of Eps15, contrasting with Eps15R which lacks such a signal and is constitutively nuclear. |
GFP-Eps15 deletion mutants, leptomycin B treatment, CRM1 binding assay |
The Journal of biological chemistry |
Medium |
11777906
|
| 2003 |
Eps15 stimulates AP180-mediated clathrin assembly in vitro via EH domain–NPF motif interactions; peptides from AP180 NPF sites block this stimulatory activity; injection of these peptides into squid giant nerve terminals inhibits clathrin-coated pit formation during synaptic vesicle endocytosis. |
In vitro clathrin assembly assay, peptide inhibition, squid nerve terminal injection |
The Journal of biological chemistry |
High |
12807910
|
| 2004 |
c-Cbl ubiquitin ligase activity is required for EGF-induced recruitment of Eps15 to the plasma membrane; this recruitment requires the UIM of Eps15, identifying ubiquitin as a module directing EGFR into an Eps15-dependent endocytic pathway. |
c-Cbl mutant overexpression, Eps15 UIM mutant analysis, immunofluorescence |
Journal of cell science |
Medium |
15383614
|
| 2005 |
Ubiquilin (hPLIC1) interacts with Eps15 via a UIM1–UBL domain interaction; UIM1 of Eps15 binds the UBL domain of ubiquilin but not ubiquitinated proteins, while UIM2 binds ubiquitinated proteins; ubiquilin recruits Eps15 to cytoplasmic ubiquitin-rich aggregates/aggresomes in a UIM-dependent manner. |
Yeast two-hybrid, GST pull-down, immunofluorescence co-localization |
Journal of cell science |
Medium |
16159959
|
| 2006 |
Parkin binds Eps15 through its ubiquitin-like (Ubl) domain interacting with Eps15's UIMs; EGF stimulation promotes parkin-mediated ubiquitination of Eps15; parkin-mediated Eps15 ubiquitination interferes with Eps15 UIM binding to ubiquitinated EGFR, thereby delaying EGFR internalization. |
Co-immunoprecipitation, ubiquitination assay, EGFR endocytosis assay in parkin-KO cells |
Nature cell biology |
High |
16862145
|
| 2007 |
Eps15 and Dap160/intersectin interact directly (Dap160 is a major Eps15 binding partner); Drosophila eps15-null mutants show reduced synaptic vesicle endocytosis and synaptic bouton defects; eps15/dap160 double mutants show additive endocytic defects, indicating they function in concert. |
Null mutant generation, synaptic vesicle endocytosis assay, genetic double-mutant epistasis, live imaging of Eps15 movement |
The Journal of cell biology |
High |
17620409
|
| 2007 |
SGIP1alpha binds directly to Eps15 and colocalizes with Eps15 and AP-2 at clathrin-coated pits; SGIP1alpha overexpression reduces transferrin and EGF endocytosis. |
Co-immunoprecipitation, immunofluorescence co-localization, endocytosis assay |
The Journal of biological chemistry |
Medium |
17626015
|
| 2008 |
The second EH domain (EH2) of Eps15 binds stonin2 with sub-micromolar affinity; NMR solution structure of the EH2–stonin2 complex shows the first NPF motif binds the conserved site while the second NPF inserts into a novel hydrophobic pocket, explaining high-affinity and selective binding. |
NMR solution structure, isothermal titration calorimetry, mutagenesis |
The EMBO journal |
High |
18200045
|
| 2008 |
An endosomally-localized Eps15 isoform, Eps15b, directly binds the ESCRT-0 component Hrs and localizes to Hrs-positive endosomal microdomains; depletion of Eps15b delays EGFR degradation and promotes recycling, whereas depletion of Eps15 has no effect on EGFR degradation. |
Isoform cloning, in vitro binding assay, siRNA knockdown, EGFR trafficking assays |
The Journal of cell biology |
High |
18362181
|
| 2008 |
Eps15 interacts with AP-1 at the trans-Golgi network; a 14-amino-acid motif near the AP-2-binding domain of Eps15 is required for AP-1 binding but not AP-2 binding; disruption of the Eps15-AP-1 interaction reduces secretory protein exit from the TGN. |
Co-immunoprecipitation from liver Golgi fractions, mutant Eps15 expression, siRNA knockdown of AP-1, secretion assay |
Molecular biology of the cell |
Medium |
18524853
|
| 2008 |
Eps15 recruitment to the Met receptor tyrosine kinase requires its coiled-coil domain and the adaptor Grb2 (which binds via a proline-rich motif in Eps15 domain III), distinct from EGFR which requires the Eps15 UIM; Eps15 knockdown delays Met degradation, rescued by WT but not coiled-coil-deleted Eps15. |
Eps15 domain mutants, siRNA knockdown, co-immunoprecipitation, receptor degradation assays |
The Journal of biological chemistry |
Medium |
19109251
|
| 2009 |
Eps15 interacts with ubiquitinated Cx43 through its UIM domain; Nedd4-mediated ubiquitination of Cx43 is required for Eps15 recruitment and subsequent endocytic trafficking of Cx43; Eps15 depletion causes accumulation of Cx43 at the plasma membrane. |
Co-immunoprecipitation, immunofluorescence, siRNA knockdown of Nedd4 and Eps15 |
Experimental cell research |
Medium |
19835873
|
| 2009 |
The parkin Ubl domain uses distinct interaction surfaces to bind Eps15 UIMs vs. proteasomal subunit S5a UIMs; parkin binds both Eps15 UIMs to create a larger interaction surface including beta1 and beta2, whereas it preferentially binds UIM I of S5a using residue K48. |
NMR spectroscopy, site-directed mutagenesis |
The Journal of biological chemistry |
High |
19875440
|
| 2011 |
Eps15S, a short splice isoform of Eps15 lacking 111 C-terminal amino acids, localizes to Rab11-positive recycling endosomes and promotes EGFR recycling back to the cell surface rather than lysosomal degradation; re-expression of Eps15S after knockdown reduces EGFR degradation and promotes recycling. |
RT-PCR identification of isoform, siRNA knockdown/rescue, EGFR trafficking assays, Rab11 co-localization |
The Journal of biological chemistry |
Medium |
21832070
|
| 2012 |
Eps15 knockout mice show a 2-fold increase in marginal zone B cell numbers in a cell-autonomous manner; EPS15-KO hematopoietic precursors more efficiently repopulate B220+ bone marrow cells; this effect is independent of BCR signaling or Notch activity. |
Eps15 knockout mouse, competitive bone marrow transplantation, FACS analysis |
PloS one |
Medium |
23226392
|
| 2013 |
Eps15 and Epsin1 (but not AP-2) are required for EPEC pedestal formation; clathrin-coated pit components Eps15 and epsin1 are recruited to EPEC infection sites independently of AP-2. |
Dominant-negative mutants, siRNA, immunofluorescence of infected cells |
The Journal of infectious diseases |
Medium |
21810914
|
| 2013 |
p38 kinase directly phosphorylates Eps15 at Ser-796 upon EGF or TNF-alpha stimulation; recombinant p38alpha phosphorylates this residue in vitro. |
Phospho-specific mass spectrometry, kinase inhibitor treatment, in vitro kinase assay with recombinant p38alpha |
FEBS letters |
Medium |
24269888
|
| 2014 |
Eps15 interacts with ubiquitinated AMPA receptors (GluA1) through its UIM domain; Nedd4-mediated GluA1 ubiquitination is required for the Eps15–AMPAR interaction; Eps15 knockdown suppresses ubiquitinated GluA1 internalization but not non-ubiquitinatable GluA1 mutant internalization. |
Co-immunoprecipitation, siRNA knockdown, surface expression assay, GluA1 ubiquitination-site mutant |
The Journal of biological chemistry |
Medium |
25023288
|
| 2015 |
USP9X is a deubiquitinating enzyme for Eps15; USP9X depletion affects EGFR internalization and trafficking; Eps15 monoubiquitination occurs at low EGF doses and is essential for EGFR internalization; ubiquitination sites on Eps15 were mapped by systematic RNAi-based DUB screen. |
RNAi screen, EGFR trafficking assays, Eps15 ubiquitination site mapping |
Current biology |
Medium |
26748853
|
| 2016 |
Arrayed DPF motifs within the Eps15/R C-terminus are differentially decoded by Fcho1/2 and AP-2; crystal structure of an Eps15/R–Fcho1 μ-homology domain complex reveals a spacing-dependent DPF triad bound in a mechanistically distinct mode from single DPF binding to AP-2; without Fcho1/2 and membrane-recruited Eps15, AP-2 assemblies are transient and endocytosis stalls. |
Crystal structure determination, cell lines lacking FCHO1/2, Eps15 membrane sequestration, AP-2 assembly assays |
Developmental cell |
High |
27237791
|
| 2016 |
The CUL3-SPOPL E3 ubiquitin ligase complex ubiquitinates and degrades EPS15 at endosomes; EPS15 associates with the ESCRT-0 components HRS and STAM on endosomes; SPOPL depletion causes EPS15 and HRS accumulation, enlarged endosomes, impaired MVB formation, and defective EGFR degradation. |
SPOPL depletion, mass spectrometry substrate identification, EGFR trafficking assay, endosome morphology analysis |
eLife |
Medium |
27008177
|
| 2019 |
EPS15 and EPS15L1 are redundantly required for transferrin receptor endocytosis and embryonic development; double knockout causes embryonic lethality; hematopoietic-specific double KO causes microcytic hypochromic anemia due to cell-autonomous defect in iron internalization (TfR endocytosis). |
Constitutive and conditional knockout mice, competitive bone marrow transplantation, iron homeostasis assays, embryonic lethality analysis |
Life science alliance |
High |
30692166
|
| 2021 |
Non-SUMOylated CRMP2 forms a complex with Numb, Eps15, and Nedd4-2 to promote clathrin-mediated endocytosis of NaV1.7; silencing Eps15 in CRMP2K374A/K374A DRG neurons restores sodium currents, demonstrating that Eps15 is necessary for CRMP2-mediated NaV1.7 internalization. |
siRNA knockdown, NaV1.7 surface/current measurement, knock-in mouse model |
Molecular brain |
Medium |
33478555
|
| 2021 |
Ubiquitinated occludin interacts with Eps15 through its UIM domain to initiate occludin internalization and trafficking to Rab5-positive vesicles for proteasomal degradation; ITCH E3 ligase ubiquitinates occludin and Eps15 knockdown rescues occludin degradation and endothelial barrier disruption caused by ALS SOD1 mutants. |
Co-immunoprecipitation, siRNA knockdown, surface localization assay, endothelial barrier assay |
Neurobiology of disease |
Medium |
33636390
|