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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 | Start | End | Switch Type | Switch Subtype | Switch Description | Information |
DEG_APCC_DBOX_1 - An RxxL-based motif that binds to the Cdh1 and Cdc20 components of APC/C thereby targeting the protein for destruction in a cell cycle dependent manner | |||||||
| 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. | ||
| 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. | ||
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. | ||
DEG_APCC_KENBOX_2 - Motif conserving the exact sequence KEN that binds to the APC/C subunit Cdh1 causing the protein to be targeted for 26S proteasome mediated degradation. | |||||||
| 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. | ||
| 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. | ||
LIG_MAD2 - Mad2 binding motif | |||||||
| CDC20_HUMAN | 129 | 137 | Binary | Allostery | Binding of Mad1-bound Closed (C-) Mitotic spindle assembly checkpoint protein MAD2A (MAD2L1) to Open (O-) Mitotic spindle assembly checkpoint protein MAD2A (MAD2L1) switches conformation of the latter to the C conformation, making the binding site for Cell division cycle protein 20 homolog (CDC20) available. This sequesters Cell division cycle protein 20 homolog (CDC20) to the spindle assembly checkpoint and prevents onset of anaphase. | ||