LIG_SH3_3 - This is the motif recognized by those SH3 domains with a non-canonical class I recognition specificity |
| TAU_HUMAN | 213 | 219 | Binary | Physicochemical compatibility | Phosphorylation of S210 adjacent to the SH3-binding motif of Isoform Tau-F of Microtubule-associated protein tau (MAPT) inhibits binding to Tyrosine-protein kinase Fyn (Fyn). | details |
| BIN1_HUMAN | 305 | 311 | Specificity | Domain hiding | An intramolecular interaction of an SH3 binding motif, encoded by exon 12A, in Isoform II2 of Myc box-dependent-interacting protein 1 (BIN1) with the SH3 domain of Bin1 prevents interaction of the Bin1 SH3 domain with the SH3 binding motif of Isoform II2 of Myc box-dependent-interacting protein 1 (BIN1). | details |
| CD2_HUMAN | 294 | 300 | Specificity | Competition | T-cell surface antigen CD2 (CD2) uses overlapping motifs to bind to CD2 antigen cytoplasmic tail-binding protein 2 (CD2BP2) and Fyn, which makes their interactions mutually exclusive. Since CD2BP2 and Tyrosine-protein kinase Fyn (FYN) reside in different subcellular locations, the specificity of CD2 for the two competitors is switched by changing its cellular localization, from non-raft membranes to lipid raft membranes. | details |
| DAG1_HUMAN | 888 | 894 | Specificity | Competition | The WW-binding motif for Dystrophin (DMD) and the SH3-binding motif for Growth factor receptor-bound protein 2 (GRB2) on Dystroglycan (DAG1) overlap, making their interactions mutually exclusive and competitive. | details |
| PLCB1_HUMAN | 1162 | 1168 | Binary | Pre‑translational | Alternative splicing removes the SH3-binding motif of Isoform B of 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-1 (PLCB1), abrogating binding to SH3 and multiple ankyrin repeat domains protein 3 (SHANK3). PLCB1 associates with a SHANK3 complex in cardiomyocytes via its splice variant-specific C-terminal tail. Studies show that Isoform B of 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-1 (PLCB1) selectively mediates downstream responses initiated by Gq-coupled receptors, in particular hypertrophy and apoptosis. | details |
| DAG1_HUMAN | 888 | 894 | Specificity | Competition | The WW-binding motif for Dystrophin (DMD) and the SH3-binding motif for Growth factor receptor-bound protein 2 (GRB2) on Dystroglycan (DAG1) overlap, making their interactions mutually exclusive and competitive. | details |
