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| APC/C-mediated degradation of cell cycle proteins | Cell cycle | Cell cycle |
| Oocyte meiosis | SCF-beta-TrCP mediated degradation of Emi1 | Wnt signaling pathway |
| Motif | Protein | Start | End | Switch Type | Switch Subtype | Switch description | Information | Evidence |
APC/C-mediated degradation of cell cycle proteins (Reactome - 174143) | ||||||||
| DEG_APCC_DBOX_3 | NEK2_HUMAN | 423 | 445 | Binary | Pre‑translational | Alternative splicing removes the extended D-box degron motif of Serine/threonine-protein kinase Nek2 (NEK2), abrogating binding to Cell division cycle protein 20 homolog (CDC20). NEK2-A is targeted by APC/C-Cdc20 in early mitosis whereas Isoform Nek2B of Serine/threonine-protein kinase Nek2 (NEK2) persists into late mitosis. Degradation of Isoform Nek2A of Serine/threonine-protein kinase Nek2 (NEK2) may be necessary to allow re-establishment of the intercentriolar linkage in late mitosis. | Curated | |
Cell cycle (KEGG - hsa04110) | ||||||||
| DEG_APCC_KENBOX_2 | MPIP2_HUMAN | 191 | 195 | Binary | Pre‑translational | Alternative splicing removes the APC/C KEN-box degron motif of M-phase inducer phosphatase 2 (CDC25B), abrogating binding to Fizzy-related protein homolog (FZR1). The motif-lacking Isoform CDC25B2 of M-phase inducer phosphatase 2 (CDC25B) is not degraded during mitosis, unlike other isoforms. | Curated | |
| DEG_APCC_KENBOX_2 | BUB1B_HUMAN | 303 | 307 | Specificity | Domain hiding | Binding of the second KEN-box motif of Mitotic checkpoint serine/threonine-protein kinase BUB1 beta (BUB1B), a subunit of the Spindle Assembly Checkpoint (SAC), to the substrate recruitment site of Cell division cycle protein 20 homolog (CDC20), the substrate recognition subunit of the Anaphase Promoting Complex/Cyclosome (APC/C), blocks binding of the Cdc20 substrate G2/mitotic-specific cyclin-B1 (CCNB1). As a result, G2/mitotic-specific cyclin-B1 (CCNB1) is not targeted for proteasomal degradation until metaphase, when the SAC is inhibited. Destruction of G2/mitotic-specific cyclin-B1 (CCNB1) is required for progression to the anaphase of the cell cycle. | Curated | |
| DEG_APCC_DBOX_1 | CCNB1_HUMAN | 41 | 49 | Specificity | Domain hiding | Binding of the second KEN-box motif of Mitotic checkpoint serine/threonine-protein kinase BUB1 beta (BUB1B), a subunit of the Spindle Assembly Checkpoint (SAC), to the substrate recruitment site of Cell division cycle protein 20 homolog (CDC20), the substrate recognition subunit of the Anaphase Promoting Complex/Cyclosome (APC/C), blocks binding of the Cdc20 substrate G2/mitotic-specific cyclin-B1 (CCNB1). As a result, G2/mitotic-specific cyclin-B1 (CCNB1) is not targeted for proteasomal degradation until metaphase, when the SAC is inhibited. Destruction of G2/mitotic-specific cyclin-B1 (CCNB1) is required for progression to the anaphase of the cell cycle. | Curated | |
| DEG_APCC_KENBOX_2 | BUB1B_HUMAN | 303 | 307 | Specificity | Domain hiding | Binding of the second KEN-box motif of Mitotic checkpoint serine/threonine-protein kinase BUB1 beta (BUB1B), a subunit of the Spindle Assembly Checkpoint (SAC), to the substrate recruitment site of Cell division cycle protein 20 homolog (CDC20), the substrate recognition subunit of the Anaphase Promoting Complex/Cyclosome (APC/C), blocks binding of the Cdc20 substrate Securin (PTTG1). As a result, Securin (PTTG1) is not targeted for proteasomal degradation until metaphase, when the SAC is inhibited. Destruction of Securin (PTTG1) is required for progression to the anaphase of the cell cycle. | Curated | |
| DEG_APCC_DBOX_1 | PTTG1_HUMAN | 60 | 68 | Specificity | Domain hiding | Binding of the second KEN-box motif of Mitotic checkpoint serine/threonine-protein kinase BUB1 beta (BUB1B), a subunit of the Spindle Assembly Checkpoint (SAC), to the substrate recruitment site of Cell division cycle protein 20 homolog (CDC20), the substrate recognition subunit of the Anaphase Promoting Complex/Cyclosome (APC/C), blocks binding of the Cdc20 substrate Securin (PTTG1). As a result, Securin (PTTG1) is not targeted for proteasomal degradation until metaphase, when the SAC is inhibited. Destruction of Securin (PTTG1) is required for progression to the anaphase of the cell cycle. | Curated | |
Cell cycle (KEGG - sce04111) | ||||||||
| DEG_APCC_KENBOX_2 | ACM1_YEAST | 97 | 101 | Specificity | Domain hiding | The KEN-box motif of APC/C-CDH1 modulator 1 (ACM1) binds to the substrate recruitment site of APC/C activator protein CDH1 (CDH1), the substrate recognition subunit of the Anaphase Promoting Complex/Cyclosome (APC/C), and thereby blocks recruitment, and subsequent targeting for proteasomal degradation, of the Cdh1 substrate G2/mitotic-specific cyclin-2 (CLB2). Degradation of G2/mitotic-specific cyclin-2 (CLB2) is required for mitotic exit and maintenance of the G1 phase of the cell cycle and is allowed by Cdc20-dependent degradation of APC/C-CDH1 modulator 1 (ACM1) in anaphase. | Curated | |
| DEG_APCC_KENBOX_2 | CG22_YEAST | 99 | 103 | Specificity | Domain hiding | The KEN-box motif of APC/C-CDH1 modulator 1 (ACM1) binds to the substrate recruitment site of APC/C activator protein CDH1 (CDH1), the substrate recognition subunit of the Anaphase Promoting Complex/Cyclosome (APC/C), and thereby blocks recruitment, and subsequent targeting for proteasomal degradation, of the Cdh1 substrate G2/mitotic-specific cyclin-2 (CLB2). Degradation of G2/mitotic-specific cyclin-2 (CLB2) is required for mitotic exit and maintenance of the G1 phase of the cell cycle and is allowed by Cdc20-dependent degradation of APC/C-CDH1 modulator 1 (ACM1) in anaphase. | Curated | |
| DEG_APCC_KENBOX_2 | ACM1_YEAST | 97 | 101 | Specificity | Domain hiding | The KEN-box motif of APC/C-CDH1 modulator 1 (ACM1) binds to the substrate recruitment site of APC/C activator protein CDH1 (CDH1), the substrate recognition subunit of the Anaphase Promoting Complex/Cyclosome (APC/C), and thereby blocks recruitment, and subsequent targeting for proteasomal degradation, of the Cdh1 substrate Kinesin-like protein CIN8 (CIN8). Degradation of Kinesin-like protein CIN8 (CIN8) is required for mitotic exit and maintenance of the G1 phase of the cell cycle and is allowed by Cdc20-dependent degradation of APC/C-CDH1 modulator 1 (ACM1) in anaphase. | Curated | |
| DEG_APCC_KENBOX_2 | CIN8_YEAST | 931 | 935 | Specificity | Domain hiding | The KEN-box motif of APC/C-CDH1 modulator 1 (ACM1) binds to the substrate recruitment site of APC/C activator protein CDH1 (CDH1), the substrate recognition subunit of the Anaphase Promoting Complex/Cyclosome (APC/C), and thereby blocks recruitment, and subsequent targeting for proteasomal degradation, of the Cdh1 substrate Kinesin-like protein CIN8 (CIN8). Degradation of Kinesin-like protein CIN8 (CIN8) is required for mitotic exit and maintenance of the G1 phase of the cell cycle and is allowed by Cdc20-dependent degradation of APC/C-CDH1 modulator 1 (ACM1) in anaphase. | Curated | |
| DEG_APCC_KENBOX_2 | ACM1_YEAST | 97 | 101 | Specificity | Domain hiding | The KEN-box motif of APC/C-CDH1 modulator 1 (ACM1) binds to the substrate recruitment site of APC/C activator protein CDH1 (CDH1), the substrate recognition subunit of the Anaphase Promoting Complex/Cyclosome (APC/C), and thereby blocks recruitment, and subsequent targeting for proteasomal degradation, of the Cdh1 substrate Probable serine/threonine-protein kinase HSL1 (HSL1). Degradation of Probable serine/threonine-protein kinase HSL1 (HSL1) is required for mitotic exit and maintenance of the G1 phase of the cell cycle and is allowed by Cdc20-dependent degradation of APC/C-CDH1 modulator 1 (ACM1) in anaphase. | Curated | |
| DEG_APCC_KENBOX_2 | HSL1_YEAST | 774 | 778 | Specificity | Domain hiding | The KEN-box motif of APC/C-CDH1 modulator 1 (ACM1) binds to the substrate recruitment site of APC/C activator protein CDH1 (CDH1), the substrate recognition subunit of the Anaphase Promoting Complex/Cyclosome (APC/C), and thereby blocks recruitment, and subsequent targeting for proteasomal degradation, of the Cdh1 substrate Probable serine/threonine-protein kinase HSL1 (HSL1). Degradation of Probable serine/threonine-protein kinase HSL1 (HSL1) is required for mitotic exit and maintenance of the G1 phase of the cell cycle and is allowed by Cdc20-dependent degradation of APC/C-CDH1 modulator 1 (ACM1) in anaphase. | Curated | |
Oocyte meiosis (KEGG - hsa04114) | ||||||||
| DEG_SCF_TRCP1_1 | FBX5_HUMAN | 144 | 149 | Binary | Physicochemical compatibility | Dual phosphorylation of S145 and S149 in the TrCP1-binding motif of F-box only protein 5 (FBXO5) targets the protein to the SCF ubiquitin ligase complex, which marks it for degradation. | Curated | |
SCF-beta-TrCP mediated degradation of Emi1 (Reactome - 174113) | ||||||||
| DEG_SCF_TRCP1_1 | FBX5_HUMAN | 144 | 149 | Binary | Physicochemical compatibility | Dual phosphorylation of S145 and S149 in the TrCP1-binding motif of F-box only protein 5 (FBXO5) targets the protein to the SCF ubiquitin ligase complex, which marks it for degradation. | Curated | |
Wnt signaling pathway (KEGG - hsa04310) | ||||||||
| DEG_SCF_TRCP1_1 | CTNB1_HUMAN | 32 | 37 | Specificity | Altered binding specificity | Phosphorylation of Catenin beta-1 (CTNNB1) at T41 generates a docking site for Glycogen synthase kinase-3 beta (GSK3B), which then phosphorylates S37, thereby generating a new docking site for GSK3B. Subsequent phosphorylation of S33 by GSK3B switches the specificity of CTNNB1 to the F-box/WD repeat-containing protein 1A (BTRC), which recruits CTNNB1 to the SCF ubiquitin ligase complex. | Curated | |