Please send any suggestions/comments to: switches@elm.eu.org
| 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: Physicochemical compatibility | Type: Cumulative Subtype: Rheostatic |
| 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. | |||||||
| XRCC1_HUMAN | LIG_FHA_2 | 517 | 523 | Hierarchical cooperative binding of two Bifunctional polynucleotide phosphatase/kinase (PNKP) molecules to one DNA repair protein XRCC1 (XRCC1) molecule upon phosphorylation of a primary and secondary FHA-binding motif in DNA repair protein XRCC1 (XRCC1) by Casein kinase II subunit alpha (CSNK2A1). | |||
| XRCC1_HUMAN | LIG_FHA_2 | 521 | 527 | Hierarchical cooperative binding of two Bifunctional polynucleotide phosphatase/kinase (PNKP) molecules to one DNA repair protein XRCC1 (XRCC1) molecule upon phosphorylation of a primary and secondary FHA-binding motif in DNA repair protein XRCC1 (XRCC1) by Casein kinase II subunit alpha (CSNK2A1). | |||
Type: Binary Subtype: Physicochemical compatibility | |||||||
| PTM of a residue in a motif or in its flanking regions alters the physicochemical and/or structural compatibility of the motif with its binding partner. This can either induce or enhance an interaction, or result in inhibition or even abrogation of an interaction. | |||||||
| XRCC4_HUMAN | LIG_FHA_2 | 231 | 237 | Phosphorylation of T233 in the FHA-binding motif of DNA repair protein XRCC4 (XRCC4) by Casein kinase II subunit alpha (CSNK2A1) induces binding to the Bifunctional polynucleotide phosphatase/kinase (PNKP) protein. | |||
Type: Cumulative Subtype: Rheostatic | |||||||
| Rheostatic switches gradually alter the affinity of a motif for a single binding partner by addition of multiple PTMs that additively contribute to this modulation. Additional modifications can either strengthen or weaken an interaction. | |||||||
| XRCC1_HUMAN | LIG_FHA_2 | 517 521 | 523 527 | Two Bifunctional polynucleotide phosphatase/kinase (PNKP) molecules interact with two FHA-binding motifs in DNA repair protein XRCC1 (XRCC1) upon phosphorylation of T519 and T523 in the motifs. Additional phosphorylation of S518 and S525 further increases the affinity of the interaction. S518 and T523 are consensus CK2 phosphorylation sites, T519 and S525 atypical. | |||