| Post Translational Modifications | Two independent E3 ubiquitin ligase complexes, SCF(SKP2) and the DCX(DTL) complex, mediated CDT1 degradation in S phase. Ubiquitinated by the DCX(DTL) complex, in response to DNA damage, leading to its degradation. Ubiquitination by the DCX(DTL) complex is necessary to ensure proper cell cycle regulation and is PCNA-dependent: interacts with PCNA via its PIP-box, while the presence of the containing the 'K+4' motif in the PIP box, recruit the DCX(DTL) complex, leading to its degradation. Phosphorylation at Thr-29 by CDK2 targets CDT1 for ubiquitination by SCF(SKP2) E3 ubiquitin ligase and subsequent degradation. The interaction with GMNN protects it against ubiquitination. Deubiquitinated by USP37. Phosphorylation by cyclin A-dependent kinases at Thr-29 targets CDT1 for ubiquitynation by SCF(SKP2) E3 ubiquitin ligase and subsequent degradation. Phosphorylated at Thr-29 by MAPK8/JNK1, which blocks replication licensing in response to stress. Binding to GMNN is not affected by phosphorylation. |
| Function | Required for both DNA replication and mitosis. DNA replication licensing factor, required for pre-replication complex assembly. Cooperates with CDC6 and the origin recognition complex (ORC) during G1 phase of the cell cycle to promote the loading of the mini-chromosome maintenance (MCM) complex onto DNA to generate pre-replication complexes (pre-RC). Required also for mitosis by promoting stable kinetochore-microtubule attachments. Potential oncogene. |
| Protein Name | Dna Replication Factor Cdt1Double Parked HomologDup |
| Database Links | Reactome: R-HSA-68867Reactome: R-HSA-68949Reactome: R-HSA-68962Reactome: R-HSA-69052Reactome: R-HSA-69205 |
| Cellular Localisation | NucleusChromosomeCentromereKinetochoreTransiently Localizes To Kinetochores During Prometaphase And Metaphase |
| Alternative Antibody Names | Anti-Dna Replication Factor Cdt1 antibodyAnti-Double Parked Homolog antibodyAnti-Dup antibodyAnti-CDT1 antibody |
Information sourced from Uniprot.org
