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Group by :Switch typeMotif classProteinEnzymePathway            Group Index    Colouring Info              Filtered: ELM:LIG_SH2_STAT5 (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: Physicochemical compatibilityType: Binary Subtype: Pre‑translationalType: Specificity Subtype: Altered binding specificity
Type: Specificity Subtype: Domain hiding


ProteinMotifStartEndSwitch descriptionInformation

Type: Specificity Subtype: Domain hiding
A domain can be sterically masked by binding of an effector when there is a large difference in intrinsic affinity of the domain for different binding partners, or a large difference in the local abundance of these partners, thereby precluding further interactions of the domain. Binding of the masking molecule can be PTM-dependent or -independent.
INSR_HUMANLIG_SH2_STAT513611364PIP3 (1-phosphatidyl-1D-myo-inositol 3,4,5-trisphosphate), a product of PI3-kinase, binds to the SH2 domains of PI3K (Phosphatidylinositol 3-kinase regulatory subunit alpha (PIK3R1)) and thereby blocks its interaction with tyrosine-phosphorylated SH2 motif containing proteins.
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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.
LAT_HUMANLIG_SH2_STAT5161164Phosphorylation of Y161 in the SH2-binding motif of Linker for activation of T-cells family member 1 (LAT) induces binding to the 1-phosphatidylinositol-4,5-bisphosphate phosphodiesterase gamma-1 (PLCG1) protein.
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GAB1_HUMANLIG_SH2_STAT5472475Phosphorylation of Y472 in the SH2-binding motif of GRB2-associated-binding protein 1 (GAB1) induces binding to Phosphatidylinositol 3-kinase regulatory subunit alpha (PIK3R1).
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GAB1_HUMANLIG_SH2_STAT5447450Phosphorylation of Y447 in the SH2-binding motif of GRB2-associated-binding protein 1 (GAB1) induces binding to Phosphatidylinositol 3-kinase regulatory subunit alpha (PIK3R1).
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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.
STA5A_HUMANLIG_SH2_STAT5694697Alternative splicing removes the regulatory Y694 residue of Signal transducer and activator of transcription 5A (STAT5A). The phosphorylation of Y694 by Proto-oncogene tyrosine-protein kinase Src (SRC) has been shown to be essential for DNA binding. This event acts as an important regulatory mechanism (See Clark et al. (2005) (here) and Okutani et al. (2001) (here)). The exact function of Y694 remains uncertain as is binding to STAT5 in dimer. The STAT5A-DeltaE18 does not enter nucleus upon PRLR stimulation.
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PRLR_HUMANLIG_SH2_STAT5342345Alternative Splicing removes the degron motif of Prolactin receptor (PRLR), abrogating binding to Signal transducer and activator of transcription 5A (STAT5A). The PRLR S1a (Isoform Short form 1a of Prolactin receptor (PRLR)) and S1b and (Isoform Short form 1b of Prolactin receptor (PRLR)) isoforms were unable to mediate the transcriptional activation of the beta-casein promoter via the JAK-STAT5 pathway. Therefore these two splice variants act as dominant negatives on the full-length version LF (Isoform 1 of Prolactin receptor (PRLR)). Another study showed that different splice variants of heterodimers (e.g. LF/S1a, LF/S1b) that were able to induce JAK2 phosphorylation but not further signalling events due to lack of STAT recruitment (Qazi et al. (2006) (here)).
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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.
CTLA4_MOUSELIG_SH2_STAT5201204Dephosphorylation of Y201 of Cytotoxic T-lymphocyte protein 4 (Ctla4) switches the specificity of Ctla4 from SH2 domain-containing proteins like Tyrosine-protein phosphatase non-receptor type 11 (Ptpn11) to the AP-2 complex mu subunit (AP-2 complex subunit mu (Ap2m1)), thereby switching from inhibitory signal transmission and negative regulation of T cell responses to internalization and inactivation of Ctla4.
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ERBB4_HUMANLIG_SH2_STAT510561059Phosphorylation-dependent binding of Receptor tyrosine-protein kinase erbB-4 (ERBB4) to the SH2 domains of Phosphatidylinositol 3-kinase regulatory subunit alpha (PIK3R1) results in signaling activation, while binding to the WW domains of E3 ubiquitin-protein ligase Itchy homolog (ITCH) to unphopshorylated ERBB4 results in ubiquitylation, endocytosis and ultimately degradation of ERBB4.
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