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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: 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. | |||||||
| NED4L_HUMAN | LIG_14-3-3_1 | 465 | 470 | Phosphorylation of Isoform Nedd4-2a of E3 ubiquitin-protein ligase NEDD4-like (NEDD4L) by Serine/threonine-protein kinase Sgk1 (SGK1) induces binding to 14-3-3 protein eta (YWHAH). This inhibits (whether allosterically or sterically is not known) interactions of NEDD4L via its WW domains with the PY motif in Amiloride-sensitive sodium channel subunit gamma (SCNN1G) (ENaC). As a result, ENaC does not get degraded and ENaC-mediated Na+ currents increase. | |||
| MEI2_SCHPO | LIG_14-3-3_1;ELM | 435 523 | 440 529 | Binding of meiRNA meiotic non-coding RNA (meiRNA) to the RRM domains of Meiosis protein mei2 (mei2) is essential for promotion of premeiotic DNA synthesis and meiosis I and is blocked by Pat1-mediated phosphorylation-induced binding of the 14-3-3 protein DNA damage checkpoint protein rad24 (rad24) to 2 14-3-3 binding motifs in mei2 | |||
Type: Specificity Subtype: Motif hiding | |||||||
| Motif hiding occurs when there is a large difference in intrinsic affinity of overlapping or adjacent motifs for their respective binding partners, or a large difference in the local abundance of these partners. Binding of an effector to one motif sterically masks the overlapping or adjacent motif, thereby precluding it from binding. Binding of the masking molecule can be PTM-dependent or -independent. | |||||||
| ADA22_HUMAN | LIG_14-3-3_3 | 831 854 | 836 859 | Phosphorylation-induced binding of dimeric 14-3-3 protein beta/alpha (YWHAB) to Disintegrin and metalloproteinase domain-containing protein 22 (ADAM22) blocks ER retention motifs in Disintegrin and metalloproteinase domain-containing protein 22 (ADAM22) and regulates transport of this protein to the membrane. | |||
| GPR15_HUMAN | LIG_14-3-3_4 | 356 | 360 | Phosphorylation-induced binding of 14-3-3 protein beta/alpha (YWHAB) promotes cell surface expression of G-protein coupled receptor 15 (GPR15) by releasing the receptor from the ER retrieval/retention pathway that is mediated by the interaction of its ER retention motif with Coatomer subunit beta (COPB1). | |||
| HG2A_HUMAN | LIG_14-3-3_3 | 5 | 10 | The basic ER retention motif of HLA class II histocompatibility antigen gamma chain (CD74) is blocked from binding to Coatomer subunit beta (COPB1) by phosphorylation-induced binding of 14-3-3 protein beta/alpha (YWHAB), regulating its release from the ER and trafficking to the plasma membrane. | |||
| CDN1B_HUMAN | LIG_14-3-3_3 | 154 | 159 | Phosphorylation of a 14-3-3-binding motif in the NLS of Cyclin-dependent kinase inhibitor 1B (CDKN1B) by RAC-alpha serine/threonine-protein kinase (AKT1) induces binding of 14-3-3 protein gamma (YWHAG), which hides the NLS and prevents binding to Importin subunit alpha-1 (KPNA1), thereby mediating cytoplasmic retention of Cyclin-dependent kinase inhibitor 1B (CDKN1B). Binding of 14-3-3 dimer involves an additional C-terminal 14-3-3-binding motif (see switch details). | |||
Type: Avidity‑sensing Subtype: | |||||||
| Multiple low-affinity interactions give rise to high-avidity interactions that have increased binding strength, with more than additive affinity. | |||||||
| KPCE_HUMAN | LIG_14-3-3_3 | 343 | 348 | Phosphorylation of two 14-3-3-binding motifs in Protein kinase C epsilon type (PRKCE) induces high-avidity binding to dimeric 14-3-3 protein zeta/delta (YWHAZ). | |||
| KPCE_HUMAN | LIG_14-3-3_3 | 365 | 370 | Phosphorylation of two 14-3-3-binding motifs in Protein kinase C epsilon type (PRKCE) induces high-avidity binding to dimeric 14-3-3 protein zeta/delta (YWHAZ). | |||
| RAF1_HUMAN | LIG_14-3-3_1 | 256 | 261 | Phosphorylation of two 14-3-3-binding motifs in RAF proto-oncogene serine/threonine-protein kinase (RAF1) in response to growth factors induces high-avidity binding to dimeric 14-3-3 protein zeta/delta (YWHAZ), with pS621 being the high-affinity interaction site. This interaction locks RAF proto-oncogene serine/threonine-protein kinase (RAF1) in an inhibited conformation. | |||
| RAF1_HUMAN | LIG_14-3-3_1 | 618 | 623 | Phosphorylation of two 14-3-3-binding motifs in RAF proto-oncogene serine/threonine-protein kinase (RAF1) in response to growth factors induces high-avidity binding to dimeric 14-3-3 protein zeta/delta (YWHAZ), with pS621 being the high-affinity interaction site. This interaction locks RAF proto-oncogene serine/threonine-protein kinase (RAF1) in an inhibited conformation. | |||
| FOXO3_HUMAN | LIG_14-3-3_3 | 250 | 255 | Phosphorylation of two 14-3-3-binding motifs in Forkhead box protein O3 (FOXO3) by RAC-alpha serine/threonine-protein kinase (AKT1) induces high-avidity binding to dimeric 14-3-3 protein beta/alpha (YWHAB). This interaction results in cytoplasmic retention and inactivation of Forkhead box protein O3 (FOXO3). | |||
| FOXO3_HUMAN | LIG_14-3-3_3 | 29 | 34 | Phosphorylation of two 14-3-3-binding motifs in Forkhead box protein O3 (FOXO3) by RAC-alpha serine/threonine-protein kinase (AKT1) induces high-avidity binding to dimeric 14-3-3 protein beta/alpha (YWHAB). This interaction results in cytoplasmic retention and inactivation of Forkhead box protein O3 (FOXO3). | |||
| PTN3_HUMAN | LIG_14-3-3_3 | 356 | 361 | Phosphorylation of two 14-3-3-binding motifs in Tyrosine-protein phosphatase non-receptor type 3 (PTPN3) induces high-avidity binding to dimeric 14-3-3 protein beta/alpha (YWHAB). | |||
| PTN3_HUMAN | LIG_14-3-3_3 | 832 | 837 | Phosphorylation of two 14-3-3-binding motifs in Tyrosine-protein phosphatase non-receptor type 3 (PTPN3) induces high-avidity binding to dimeric 14-3-3 protein beta/alpha (YWHAB). | |||
| KSR1_MOUSE | LIG_14-3-3_3 | 294 | 299 | Phosphorylation of two 14-3-3-binding motifs in Kinase suppressor of Ras 1 (Ksr1) by Q03141 induces high-avidity binding to dimeric 14-3-3 protein beta/alpha (Ywhab). This interaction prevents Kinase suppressor of Ras 1 (Ksr1) to localise to the membrane where it is involved in activation of MAP kinases by Q99N57 in response to growth factors. | |||
| KSR1_MOUSE | LIG_14-3-3_3 | 389 | 394 | Phosphorylation of two 14-3-3-binding motifs in Kinase suppressor of Ras 1 (Ksr1) by Q03141 induces high-avidity binding to dimeric 14-3-3 protein beta/alpha (Ywhab). This interaction prevents Kinase suppressor of Ras 1 (Ksr1) to localise to the membrane where it is involved in activation of MAP kinases by Q99N57 in response to growth factors. | |||
| SLOB_DROME | LIG_14-3-3_3 | 51 | 56 | Phosphorylation of two 14-3-3-binding motifs in Slowpoke-binding protein (Slob) by Calcium/calmodulin-dependent protein kinase type II alpha chain (CaMKII) induces high-avidity binding to dimeric 14-3-3 protein zeta (14-3-3zeta). This interaction recruits 14-3-3 protein zeta (14-3-3zeta) to Calcium-activated potassium channel slowpoke (slo) in the presynapse of neuromuscular junctions. | |||
| SLOB_DROME | LIG_14-3-3_3 | 76 | 81 | Phosphorylation of two 14-3-3-binding motifs in Slowpoke-binding protein (Slob) by Calcium/calmodulin-dependent protein kinase type II alpha chain (CaMKII) induces high-avidity binding to dimeric 14-3-3 protein zeta (14-3-3zeta). This interaction recruits 14-3-3 protein zeta (14-3-3zeta) to Calcium-activated potassium channel slowpoke (slo) in the presynapse of neuromuscular junctions. | |||
| IRS1_HUMAN | LIG_14-3-3_3 | 371 | 376 | Phosphorylation of two 14-3-3-binding motifs in Insulin receptor substrate 1 (IRS1) induces high-avidity binding to dimeric 14-3-3 protein epsilon (YWHAE). | |||
| IRS1_HUMAN | LIG_14-3-3_3 | 638 | 643 | Phosphorylation of two 14-3-3-binding motifs in Insulin receptor substrate 1 (IRS1) induces high-avidity binding to dimeric 14-3-3 protein epsilon (YWHAE). | |||
| MEI2_SCHPO | LIG_14-3-3_1 | 435 | 440 | Phosphorylation of two 14-3-3-binding motifs in Meiosis protein mei2 (mei2) by Negative regulator of sexual conjugation and meiosis (ran1) induces high-avidity binding to dimeric DNA damage checkpoint protein rad24 (rad24), with pT527 being the high-affinity interaction site. | |||
| MEI2_SCHPO | LIG_14-3-3_2 | 523 | 529 | Phosphorylation of two 14-3-3-binding motifs in Meiosis protein mei2 (mei2) by Negative regulator of sexual conjugation and meiosis (ran1) induces high-avidity binding to dimeric DNA damage checkpoint protein rad24 (rad24), with pT527 being the high-affinity interaction site. | |||
| MDM4_HUMAN | LIG_14-3-3_1 | 364 | 369 | Optimal binding of 14-3-3 dimer to Hdmx in response to DNA damage requires phosphorylation of two 14-3-3-binding motifs by Chk2 kinase. Binding of 14-3-3 dimer is involved in inactivation of Hdmx, a negative regulator of p53, in response to DNA damage. | |||
| MDM4_HUMAN | LIG_14-3-3_3 | 339 | 344 | Optimal binding of 14-3-3 dimer to Hdmx in response to DNA damage requires phosphorylation of two 14-3-3-binding motifs by Chk2 kinase. Binding of 14-3-3 dimer is involved in inactivation of Hdmx, a negative regulator of p53, in response to DNA damage. | |||
| FOXO4_HUMAN | LIG_14-3-3_1 | 29 | 34 | Phosphorylation of two 14-3-3-binding motifs in Foxo4 by PKB induces binding of 14-3-3 dimer. In the nucleus, this blocks binding to DNA, while in the cytoplasm it blocks reimport of Foxo4 into the nucleus by blocking its Nuclear Localisation Signal (NLS). Since binding of 14-3-3 to a single motif occurs with an affinity similar to the affinity of Foxo4 for DNA, multivalent binding of 14-3-3 dimer is required for efficient inhibition of DNA binding. | |||
| FOXO4_HUMAN | LIG_14-3-3_2 | 193 | 199 | Phosphorylation of two 14-3-3-binding motifs in Foxo4 by PKB induces binding of 14-3-3 dimer. In the nucleus, this blocks binding to DNA, while in the cytoplasm it blocks reimport of Foxo4 into the nucleus by blocking its Nuclear Localisation Signal (NLS). Since binding of 14-3-3 to a single motif occurs with an affinity similar to the affinity of Foxo4 for DNA, multivalent binding of 14-3-3 dimer is required for efficient inhibition of DNA binding. | |||
| CDN1B_HUMAN | LIG_14-3-3_3 | 154 | 159 | Phosphorylation of two 14-3-3-binding motifs in Cyclin-dependent kinase inhibitor 1B (CDKN1B) by RAC-alpha serine/threonine-protein kinase (AKT1) and ribosomal protein S6 kinases (Ribosomal protein S6 kinase alpha-1 (RPS6KA1), Ribosomal protein S6 kinase alpha-3 (RPS6KA3)) induces binding of 14-3-3 dimer. Binding of 14-3-3 results in cytoplasmic localisation of Cyclin-dependent kinase inhibitor 1B (CDKN1B) (see switch details), thereby alleviating Cyclin-dependent kinase inhibitor 1B (CDKN1B)-mediated inhibition of cyclin-dependent kinases and cell cycle progression. | |||
| CDN1B_HUMAN | LIG_14-3-3_3 | 193 | 198 | Phosphorylation of two 14-3-3-binding motifs in Cyclin-dependent kinase inhibitor 1B (CDKN1B) by RAC-alpha serine/threonine-protein kinase (AKT1) and ribosomal protein S6 kinases (Ribosomal protein S6 kinase alpha-1 (RPS6KA1), Ribosomal protein S6 kinase alpha-3 (RPS6KA3)) induces binding of 14-3-3 dimer. Binding of 14-3-3 results in cytoplasmic localisation of Cyclin-dependent kinase inhibitor 1B (CDKN1B) (see switch details), thereby alleviating Cyclin-dependent kinase inhibitor 1B (CDKN1B)-mediated inhibition of cyclin-dependent kinases and cell cycle progression. | |||
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. | |||||||
| MPIP3_HUMAN | LIG_14-3-3_3 | 213 | 218 | Phosphorylation of S216 in a 14-3-3-binding motif of M-phase inducer phosphatase 3 (CDC25C) by Serine/threonine-protein kinase Chk1 (CHEK1) induces binding to 14-3-3 protein beta/alpha (YWHAB), which negatively regulates M-phase inducer phosphatase 3 (CDC25C). | |||
| BAD_RAT | LIG_14-3-3_1 | 134 | 139 | Phosphorylation of S137 by RAC-alpha serine/threonine-protein kinase (Akt1) in the 14-3-3-binding motif of Bcl2 antagonist of cell death (Bad) induces binding to the 14-3-3 protein beta/alpha (YWHAB) protein. This interaction inhibits the pro-apoptotic activity of Bcl2 antagonist of cell death (Bad). | |||
| MT_POVM3 | LIG_14-3-3_1 | 254 | 259 | Phosphorylation of S257 in the 14-3-3-binding motif of Middle T antigen induces binding to the 14-3-3 protein zeta/delta (YWHAZ) protein. | |||
| ATX1_HUMAN | LIG_14-3-3_1 | 772 | 777 | Phosphorylation of S775 by RAC-alpha serine/threonine-protein kinase (AKT1) in the 14-3-3-binding motif of Ataxin-1 (ATXN1) induces binding to the 14-3-3 protein zeta/delta (YWHAZ) protein. | |||
| M3K5_HUMAN | LIG_14-3-3_1 | 963 | 968 | Phosphorylation of S966 in the 14-3-3-binding motif of Mitogen-activated protein kinase kinase kinase 5 (MAP3K5) induces binding to the 14-3-3 protein zeta/delta (YWHAZ) protein. This interaction inhibits the pro-apoptotic activity of Mitogen-activated protein kinase kinase kinase 5 (MAP3K5). | |||
| PTPN3_MOUSE | LIG_14-3-3_2 | 355 | 361 | Phosphorylation of S359 in the 14-3-3-binding motif of Tyrosine-protein phosphatase non-receptor type 3 (Ptpn3) induces binding to the 14-3-3 protein beta/alpha (Ywhab) protein. | |||
| NAC1_HUMAN | LIG_14-3-3_2 | 388 | 394 | Phosphorylation of S392 in the 14-3-3-binding motif of Sodium/calcium exchanger 1 (SLC8A1) induces binding to the 14-3-3 protein epsilon (YWHAE) protein. This interaction inhibits the activity of Sodium/calcium exchanger 1 (SLC8A1). | |||
| FOXO4_HUMAN | LIG_14-3-3_2 | 193 | 199 | Phosphorylation of S197 by in the 14-3-3-binding motif of Forkhead box protein O4 (FOXO4) induces binding to the 14-3-3 protein zeta/delta (YWHAZ) protein. | |||
| TF65_HUMAN | LIG_14-3-3_2 | 41 | 47 | Phosphorylation of S45 by in the 14-3-3-binding motif of Transcription factor p65 (RELA) induces binding to the 14-3-3 protein eta (YWHAH) protein. | |||
| PDE3A_HUMAN | LIG_14-3-3_2 | 424 | 430 | Phosphorylation of S428 by in the 14-3-3-binding motif of cGMP-inhibited 3',5'-cyclic phosphodiesterase A (PDE3A) induces binding to the 14-3-3 protein zeta/delta (YWHAZ) protein. | |||
| TESK1_RAT | LIG_14-3-3_2 | 435 | 441 | Phosphorylation of S439 in the 14-3-3-binding motif of Dual specificity testis-specific protein kinase 1 (Tesk1) induces binding to the 14-3-3 protein beta/alpha (Ywhab) protein. This interaction inhibits the kinase activity of Dual specificity testis-specific protein kinase 1 (Tesk1). | |||
| RIM15_YEAST | LIG_14-3-3_3 | 1072 | 1077 | Phosphorylation of T1075 in the 14-3-3-binding motif of Serine/threonine-protein kinase RIM15 (RIM15) induces binding to the Protein BMH2 (BMH2) protein. This interaction sequesters Serine/threonine-protein kinase RIM15 (RIM15) in the cytoplasm, thereby inhibiting its function. | |||
| HDAC4_HUMAN | LIG_14-3-3_3 | 629 | 634 | Phosphorylation of S632 in the 14-3-3-binding motif of Histone deacetylase 4 (HDAC4) induces binding to the 14-3-3 protein beta/alpha (YWHAB) protein. This interaction sequesters Histone deacetylase 4 (HDAC4) in the cytoplasm, thereby inhibiting their transcription repression activity. | |||
| RAF1_HUMAN | LIG_14-3-3_1 | 256 | 261 | Phosphorylation of S257 in the 14-3-3-binding motif of RAF proto-oncogene serine/threonine-protein kinase (RAF1) abolishes binding of the motif, phosphorylated at S259, to 14-3-3 protein zeta/delta (YWHAZ). | |||
| MPIP2_HUMAN | LIG_14-3-3_3 | 320 | 325 | Phosphorylation of S321 in the 14-3-3-binding motif of M-phase inducer phosphatase 2 (CDC25B) by Cyclin-dependent kinase 1 (CDK1) during mitosis abolishes binding of the motif, phosphorylated at S323, to 14-3-3 protein beta/alpha (YWHAB), thereby maintaining active Cdc25B. | |||
| YAP1_MOUSE | LIG_14-3-3_1 | 109 | 114 | Phosphorylation of S112 in the 14-3-3 binding motif of Yorkie homolog (Yap1) induces binding to the 14-3-3 protein epsilon (Ywhae) protein. 14-3-3 retains phosphorylated YAP in the cytosol, negatively regulating its function. | |||
| WWTR1_HUMAN | LIG_14-3-3_1 | 86 | 91 | Phosphorylation of S89 in the 14-3-3-binding motif of WW domain-containing transcription regulator protein 1 (WWTR1) induces binding to 14-3-3 protein epsilon (YWHAE), retaining phosphorylated WWTR1 in the cytosol, negatively regulating its function. | |||
| BAD_MOUSE | LIG_14-3-3_1 | 133 | 138 | Phosphorylation of S136 in Bcl2 antagonist of cell death (Bad) by RAC-alpha serine/threonine-protein kinase (Akt1) in response to survival and growth signals such as Interleukin-3 (Il3) induces binding to 14-3-3 protein theta (Ywhaq). Binding of 14-3-3 protein theta (Ywhaq) results in dissociation of Bcl2 antagonist of cell death (Bad) from Bcl-2-like protein 1 (Bcl2l1), and thereby inhibits the pro-apoptotic activity of Bcl2 antagonist of cell death (Bad) by allowing liberated Bcl-2-like protein 1 (Bcl2l1) to exert its anti-apoptotic effect on pro-apoptotic proteins like Apoptosis regulator BAX (Bax). | |||
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. | |||||||
| SLOB_DROME | LIG_14-3-3_3 | 76 | 81 | Alternative splicing removes the 14-3-3-binding motif of Slowpoke-binding protein (Slob), abrogating binding to 14-3-3 family. Another 14-3-3 motif exists in this protein (50-RSNS-54) that is not altered by Alternative splicing. The removal of this motif therefore decreases the avidity of the interaction with 14-3-3 proteins. | |||
| HAP1_RAT | LIG_14-3-3_4 | 594 | 598 | Alternative splicing removes the 14-3-3-binding motif of Isoform Short of Huntingtin-associated protein 1 (Hap1), abrogating binding to 14-3-3 protein zeta/delta (Ywhaz). The association of HAP1A (Isoform Short of Huntingtin-associated protein 1 (Hap1)) with 14-3-3 protein zeta/delta (Ywhaz) inhibits binding of the splice variant to members of the kinesin light chain family and diminishes trafficking of Hap1 to neural processes and neurite tips. The result is a decrease in neurite outgrowth. | |||
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. | |||||||
| ITB2_HUMAN | LIG_14-3-3_3 | 755 | 760 | Phosphorylation of T758 in Integrin beta-2 (ITGB2) switches the specificity of ITGB2 from Filamin-A (FLNA) to 14-3-3 proteins (e.g. 14-3-3 protein zeta/delta (YWHAZ)). | |||
| ATX1_HUMAN | LIG_14-3-3_1 | 772 | 777 | Phosphorylation of S775 switches binding specificity of Ataxin-1 (ATXN1) from the splicing factor Splicing factor U2AF 65 kDa subunit (U2AF2) to 14-3-3 proteins (e.g. 14-3-3 protein zeta/delta (YWHAZ)). While association with the spliceosome protects ATXN1 from self-association, its phosphorylation-dependent recruitment to 14-3-3 proteins (e.g. YWHAZ) might result in aggregation. | |||