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| Domain hiding | Altered binding specificity | Motif hiding | Composite binding site formation |
| Uncategorised | Rheostatic | Allostery | Avidity-sensing |
| Physicochemical compatibility | Pre-translational | Competition |
| Protein | Motif | Start | End | Switch description | Information |
Type: Avidity‑sensing Subtype: | |||||||
| Multiple low-affinity interactions give rise to high-avidity interactions that have increased binding strength, with more than additive affinity. | |||||||
| CD3Z_HUMAN | LIG_TYR_ITAM | 69 | 86 | Phosphorylation of Y72 and Y83 in the ITAM motif of T-cell surface glycoprotein CD3 zeta chain (CD247) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase ZAP-70 (ZAP70). | |||
| CD3Z_HUMAN | LIG_TYR_ITAM | 69 | 86 | Phosphorylation of Y72 and Y83 in the ITAM motif of T-cell surface glycoprotein CD3 zeta chain (CD247) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase ZAP-70 (ZAP70). | |||
| CD79A_MOUSE | LIG_TYR_ITAM | 179 | 196 | Phosphorylation of Y182 and Y193 in the ITAM motif of B-cell antigen receptor complex-associated protein alpha chain (Cd79a) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase SYK (Syk). Maximal Syk activation requires both Syk SH2 domains and phosphorylation of both ITAM tyrosine residues. | |||
| CD79A_MOUSE | LIG_TYR_ITAM | 179 | 196 | Phosphorylation of Y182 and Y193 in the ITAM motif of B-cell antigen receptor complex-associated protein alpha chain (Cd79a) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase SYK (Syk). Maximal Syk activation requires both Syk SH2 domains and phosphorylation of both ITAM tyrosine residues. | |||
| CD3E_HUMAN | LIG_TYR_ITAM | 185 | 202 | Phosphorylation of Y188 and Y199 in the ITAM motif of T-cell surface glycoprotein CD3 epsilon chain (CD3E) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase SYK (SYK). | |||
| CD3E_HUMAN | LIG_TYR_ITAM | 185 | 202 | Phosphorylation of Y188 and Y199 in the ITAM motif of T-cell surface glycoprotein CD3 epsilon chain (CD3E) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase SYK (SYK). | |||
| CD3Z_HUMAN | LIG_TYR_ITAM | 108 | 126 | Phosphorylation of Y111 and Y123 in the ITAM motif of T-cell surface glycoprotein CD3 zeta chain (CD247) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase ZAP-70 (ZAP70). | |||
| CD3Z_HUMAN | LIG_TYR_ITAM | 108 | 126 | Phosphorylation of Y111 and Y123 in the ITAM motif of T-cell surface glycoprotein CD3 zeta chain (CD247) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase ZAP-70 (ZAP70). | |||
| CD3Z_HUMAN | LIG_TYR_ITAM | 139 | 156 | Phosphorylation of Y142 and Y153 in the ITAM motif of T-cell surface glycoprotein CD3 zeta chain (CD247) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase ZAP-70 (ZAP70). | |||
| CD3Z_HUMAN | LIG_TYR_ITAM | 139 | 156 | Phosphorylation of Y142 and Y153 in the ITAM motif of T-cell surface glycoprotein CD3 zeta chain (CD247) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase ZAP-70 (ZAP70). | |||
| CD3G_HUMAN | LIG_TYR_ITAM | 157 | 174 | Phosphorylation of Y160 and Y171 in the ITAM motif of T-cell surface glycoprotein CD3 gamma chain (CD3G) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase ZAP-70 (ZAP70). | |||
| CD3G_HUMAN | LIG_TYR_ITAM | 157 | 174 | Phosphorylation of Y160 and Y171 in the ITAM motif of T-cell surface glycoprotein CD3 gamma chain (CD3G) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase ZAP-70 (ZAP70). | |||
| FCG2A_HUMAN | LIG_TYR_ITAM | 285 | 307 | Phosphorylation of Y288 and Y304 in the ITAM motif of Low affinity immunoglobulin gamma Fc region receptor II-a (FCGR2A) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase SYK (SYK). | |||
| FCG2A_HUMAN | LIG_TYR_ITAM | 285 | 307 | Phosphorylation of Y288 and Y304 in the ITAM motif of Low affinity immunoglobulin gamma Fc region receptor II-a (FCGR2A) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase SYK (SYK). | |||
| FCERG_HUMAN | LIG_TYR_ITAM | 62 | 79 | Phosphorylation of Y65 and Y76 in the ITAM motif of High affinity immunoglobulin epsilon receptor subunit gamma (FCER1G) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase SYK (SYK). | |||
| FCERG_HUMAN | LIG_TYR_ITAM | 62 | 79 | Phosphorylation of Y65 and Y76 in the ITAM motif of High affinity immunoglobulin epsilon receptor subunit gamma (FCER1G) induces high-avidity binding to the tandem SH2 domains of Tyrosine-protein kinase SYK (SYK). | |||
Type: Specificity Subtype: Altered binding specificity | |||||||
| The balance of the competition for overlapping or adjacent, mutually exclusive interaction interfaces is tipped in favor of one of the interactors by PTM-dependent modulation of the intrinsic affinity of a binding region. Multiple, successive PTMs allow sequential switching of different binding partners in an ordered manner by step-wise alteration of binding specificity. | |||||||
| CD3E_HUMAN | LIG_TYR_ITAM | 185 | 202 | Phosphorylation of T-cell surface glycoprotein CD3 epsilon chain (CD3E) by Lck (Tyrosine-protein kinase Lck (LCK)) during T cell activation switches the specificity of CD3E from SH3 domain containing proteins like Epidermal growth factor receptor kinase substrate 8-like protein 1 (EPS8L1) to SH2 domain containing proteins like Tyrosine-protein kinase ZAP-70 (ZAP70). | |||