Receptor tyrosine-protein kinase erbB-4 - ERBB4 - Homo sapiens
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| LIG_WW_1 | 1053 | 1056 | Specificity | Altered binding specificity | Phosphorylation-dependent binding of Receptor tyrosine-protein kinase erbB-4 (ERBB4) to the SH2 domains of Phosphatidylinositol 3-kinase regulatory subunit alpha (PIK3R1) results in signaling activation, while binding to the WW domains of E3 ubiquitin-protein ligase Itchy homolog (ITCH) to unphopshorylated ERBB4 results in ubiquitylation, endocytosis and ultimately degradation of ERBB4. | details |
| LIG_SH2_STAT5 | 1056 | 1059 | Specificity | Altered binding specificity | Phosphorylation-dependent binding of Receptor tyrosine-protein kinase erbB-4 (ERBB4) to the SH2 domains of Phosphatidylinositol 3-kinase regulatory subunit alpha (PIK3R1) results in signaling activation, while binding to the WW domains of E3 ubiquitin-protein ligase Itchy homolog (ITCH) to unphopshorylated ERBB4 results in ubiquitylation, endocytosis and ultimately degradation of ERBB4. | details |
| LIG_WW_1 | 1053 | 1056 | Binary | Pre‑translational | Alternative splicing removes the WW-binding motif of Receptor tyrosine-protein kinase erbB-4 (ERBB4), abrogating binding to E3 ubiquitin-protein ligase Itchy homolog (ITCH). The presence of a WW-binding motif mediates ERBB4 mono-ubiquitination and endocytosis by the WW domain-containing HECT-type E3 ubiquitin ligase ITCH. | details |
| LIG_SH2_IIA | 1056 | 1059 | Binary | Pre‑translational | Alternative splicing removes the SH2-binding motif of Receptor tyrosine-protein kinase erbB-4 (ERBB4), abrogating binding to Phosphatidylinositol 3-kinase regulatory subunit alpha (PIK3R1). The SH2-binding motif overlaps with a WW-binding motif. Binding of these motifs is regulated in a phosphorylation-dependent manner, ensuring ERBB4 is either endocytosed or stabilised. | details |
| LIG_SH2_IIA | 1056 | 1059 | Binary | Pre‑translational | Alternative splicing removes the SH2-binding motif of Receptor tyrosine-protein kinase erbB-4 (ERBB4), abrogating binding to Phosphatidylinositol 3-kinase regulatory subunit alpha (PIK3R1). The SH2-binding motif overlaps with a WW-binding motif. Binding of these motifs is regulated in a phosphorylation-dependent manner, ensuring ERBB4 is either endocytosed or stabilised. | details |
| LIG_WW_1 | 1053 | 1056 | Binary | Pre‑translational | Alternative splicing removes the WW-binding motif of Receptor tyrosine-protein kinase erbB-4 (ERBB4), abrogating binding to E3 ubiquitin-protein ligase Itchy homolog (ITCH). The presence of a WW-binding motif mediates ERBB4 mono-ubiquitination and endocytosis by the WW domain-containing HECT-type E3 ubiquitin ligase ITCH. | details |
