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Group by :Switch typeMotif classProteinEnzymePathway            Group Index    Colouring Info              Filtered: PFAM:PF00018 (8 hits) x
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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

x  Index
Type: Binary Subtype: AllosteryType: Binary Subtype: Physicochemical compatibilityType: Binary Subtype: Pre‑translational
Type: Specificity Subtype: Altered binding specificityType: Specificity Subtype: Competition


ProteinMotifStartEndSwitch descriptionInformation

Type: Specificity Subtype: Competition
Competitive binding of multiple binding partners to overlapping or adjacent, mutually exclusive interaction interfaces depends on local target protein abundance, which can be regulated by changing the expression level or subcellular localisation of the competitors, or by scaffolding.
CD2_HUMANLIG_SH3_3294300T-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.
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DAG1_HUMANLIG_SH3_3888894The 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.
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DAG1_HUMANLIG_SH3_3888894The 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.
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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.
PAK1_HUMANLIG_SH3_21318Phosphorylation of S21 adjacent to the SH3-binding motif of Serine/threonine-protein kinase PAK 1 (PAK1) by RAC subfamily inhibits binding to Cytoplasmic protein NCK1 (NCK1), which regulates its localization to focal contacts.
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TAU_HUMANLIG_SH3_3213219Phosphorylation 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).
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Type: Binary Subtype: Pre‑translational
Pre-translational mechanisms such as alternative splicing, alternative promoter-usage and/or RNA editing result in inclusion or removal of exons that contain an entire or partial motif.
ADA15_HUMANLIG_SH3_2767772Alternative splicing removes the SH3-binding motif of Disintegrin and metalloproteinase domain-containing protein 15 (ADAM15), abrogating binding to Proto-oncogene tyrosine-protein kinase Src (SRC). The overexpression of this splice variant has been linked to clinical aggressiveness of breast cancer.
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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_HUMANLIG_SH3_5184188Phosphorylation 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).
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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_HUMANLIG_SH3_5184188Ligand 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.
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