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.
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PHO4_YEAST | TRG_NLS_MonoExtC_3 | 156 | 161 | Phosphorylation of S152 adjacent to the NLS of Phosphate system positive regulatory protein PHO4 (PHO4) by the Pho80-Pho85 CDK-Cyclin complex inhibits nuclear import this protein by blocking its interaction with Importin subunit beta-3 (PSE1). Upon phosphate starvation, Pho81 inhibits the Pho80-Pho85 complex, leading to translocation of Phosphate system positive regulatory protein PHO4 (PHO4) to the nucleus, where it regulates expression of phosphate-responsive genes. | details |
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.
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MDM2_HUMAN | TRG_NLS_MonoExtC_3 | 181 | 187 | Alternative splicing removes the nuclear localisation signal (NLS) of E3 ubiquitin-protein ligase Mdm2 (MDM2), abrogating binding to Importin subunit alpha-1 (KPNA1). The exclusion from the nucleus is not complete however, as another NLS (466-473) is speculated to target splice variants to the nucleus, however, to the annotator it seems more likely that splice variants can dimerise with full-length MDM2 and be simultaneously transported into nucleus. | details |