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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 |
| Protein | Motif | Start | End | Switch description | Information |
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. | |||||||
| IL2RB_HUMAN | LIG_SH2_III | 531 | 540 | Phosphorylation of Y536 in the SH2-binding motif of Interleukin-2 receptor subunit beta (IL2RB) induces binding to the Signal transducer and activator of transcription 5A (STAT5A) protein. | |||
| STA5A_HUMAN | LIG_SH2_III | 686 | 702 | Phosphorylation of Y694 in the SH2-binding motif of Signal transducer and activator of transcription 5A (STAT5A) induces binding to the Signal transducer and activator of transcription 5B (STAT5B) protein. | |||
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_HUMAN | LIG_SH2_STAT5 | 694 | 697 | Alternative 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. | |||
| PRLR_HUMAN | LIG_SH2_STAT5 | 342 | 345 | Alternative 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)). | |||