Domain hiding |   Altered binding specificity |   Motif hiding |   Composite binding site formation |
  Uncategorised |   Rheostatic |   Allostery |   Avidity-sensing |
  Physicochemical compatibility |   Pre-translational |   Competition |
Type: Avidity‑sensing Subtype: | Type: Binary Subtype: Allostery | Type: Specificity Subtype: Altered binding specificity |
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. | |||||||
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). | |||
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_SH3_5 | 184 | 188 | 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). | |||
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). | |||
Type: Binary Subtype: Allostery | |||||||
The binding properties of a motif or a motif-binding domain are modulated indirectly by allosteric effects resulting from PTM or effector binding at a site that is distinct from the actual interaction interface. | |||||||
CD3E_HUMAN | LIG_SH3_5 | 184 | 188 | Ligand binding to the T cell receptor complex TCR-CD3 results in a conformational change that exposes an SH3-binding motif in T-cell surface glycoprotein CD3 epsilon chain (CD3E), resulting in recruitment of Cytoplasmic protein NCK2 (NCK2), involved in T cell activation. |