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 |
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. | |||||||
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. | |||||||
RAD9_YEAST | LIG_FHA_2 | 153 | 159 | Phosphorylation of T155 in the FHA-binding motif of DNA repair protein RAD9 (RAD9) induces binding to the Serine/threonine-protein kinase RAD53 (RAD53) protein. | |||
RAD9_YEAST | LIG_FHA_2 | 190 | 196 | Phosphorylation of T192 in the FHA-binding motif of DNA repair protein RAD9 (RAD9) induces binding to the Serine/threonine-protein kinase RAD53 (RAD53) protein. | |||
XRCC1_HUMAN | LIG_FHA_2 | 521 | 527 | Phosphorylation of T523 in the FHA-binding motif of DNA repair protein XRCC1 (XRCC1) by Casein kinase II subunit alpha (CSNK2A1) induces binding to the Aprataxin (APTX) protein. | |||
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. | |||
XRCC4_MOUSE | LIG_FHA_2 | 229 | 235 | Phosphorylation of T231 in the FHA-binding motif of DNA repair protein XRCC4 (Xrcc4) induces binding to the Bifunctional polynucleotide phosphatase/kinase (Pnkp) protein. | |||
MRC1_SCHPO | LIG_FHA_2 | 643 | 649 | Phosphorylation of T645 in the FHA-binding motif of Mediator of replication checkpoint protein 1 (mrc1) induces binding to the Serine/threonine-protein kinase cds1 (cds1) 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. | |||
MK67I_HUMAN | LIG_FHA_2 | 238 | 244 | Phosphorylation of T238 in MKI67 FHA domain-interacting nucleolar phosphoprotein (MKI67IP) by Cyclin-dependent kinase 1 (CDK1) primes for phosphorylation of T234 by Glycogen synthase kinase-3 beta (GSK3B), which primes for phosphorylation of S230 by Glycogen synthase kinase-3 beta (GSK3B). Triple-phosphorylated hNIFK (MKI67 FHA domain-interacting nucleolar phosphoprotein (MKI67IP)) binds strongly to Antigen KI-67 (MKI67). See also switch details | |||
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. | |||||||
MK67I_HUMAN | LIG_FHA_2 | 238 | 244 | Phosphorylation of T238 of MKI67 FHA domain-interacting nucleolar phosphoprotein (MKI67IP) by Cyclin-dependent kinase 1 (CDK1) primes for phosphorylation of T234 by Glycogen synthase kinase-3 beta (GSK3B), which primes for phosphorylation of S230 by GSK3B. Triple-phosphorylated hNIFK (MKI67IP) binds strongly to Antigen KI-67 (MKI67). |