CDK2 is a member of the eukaryotic S/T protein kinase family and its function is to catalyze the phosphoryl transfer of ATP γ-phosphate to serine or threonine hydroxyl (denoted as S0/T0) in a protein substrate.
CAT No: R1272
CAS No:255064-79-0
Synonyms/Alias:CDK2;255064-79-0;HY-P0235;MS-31548;G13486;
Cyclin-dependent kinase 2 (CDK2) is a serine/threonine protein kinase that plays a pivotal role in the regulation of the eukaryotic cell cycle. As a member of the cyclin-dependent kinase family, CDK2 is essential for the control of cell cycle progression, particularly during the transition from G1 to S phase and throughout S phase. Its activity is tightly regulated through association with specific cyclins and by phosphorylation events, making it a central component in the orchestration of DNA replication and cellular proliferation. Due to its critical involvement in cell cycle checkpoints and genomic integrity, CDK2 is a key focus in molecular biology, cancer research, and cell signaling studies.
Cell cycle analysis: CDK2 is widely utilized in research focused on elucidating the molecular mechanisms underpinning cell cycle control. Its kinase activity, modulated by interactions with cyclins E and A, serves as a molecular marker for S phase entry and progression. Researchers employ CDK2 in in vitro kinase assays, cell synchronization experiments, and genetic manipulation studies to dissect the regulatory networks governing cell proliferation, checkpoint activation, and DNA synthesis. By targeting this kinase, scientists can investigate the consequences of altered cell cycle dynamics and better understand the fundamental processes that drive cellular division.
Signal transduction studies: The enzyme is a valuable tool for mapping signal transduction pathways that converge on cell cycle regulation. CDK2 integrates upstream signals from mitogenic stimuli, growth factors, and cellular stress responses, translating them into precise phosphorylation events on downstream substrates such as the retinoblastoma protein (Rb) and other cell cycle regulators. Experimental modulation of CDK2 activity, through pharmacological inhibitors or genetic approaches, enables the dissection of pathway crosstalk and feedback mechanisms that influence cellular fate decisions, proliferation rates, and differentiation outcomes.
Cancer biology research: Aberrant regulation of CDK2 has been implicated in oncogenesis and tumor progression, highlighting its importance as a subject of intensive investigation in cancer biology. Experimental systems utilizing CDK2, including overexpression models, RNA interference, and small-molecule inhibitor screens, are employed to characterize its contribution to uncontrolled proliferation, genomic instability, and resistance to cell cycle arrest signals. Such studies provide insights into the molecular vulnerabilities of cancer cells and inform the development of novel strategies for targeted intervention.
Protein-protein interaction mapping: The kinase's ability to form complexes with various cyclins and regulatory proteins makes it an excellent model for studying protein-protein interactions within the cell cycle machinery. Techniques such as co-immunoprecipitation, pull-down assays, and mass spectrometry-based proteomics leverage CDK2 to identify novel binding partners, map interaction domains, and characterize the dynamic assembly of cell cycle regulatory complexes. These investigations enhance understanding of the structural and functional organization of cell cycle checkpoints and regulatory modules.
High-throughput screening platforms: In drug discovery and chemical biology, CDK2 serves as a target for high-throughput screening of small-molecule libraries aimed at identifying novel modulators of kinase activity. Biochemical and cell-based assays utilizing this kinase facilitate the evaluation of compound specificity, potency, and mechanism of action. The resulting data contribute to the identification and optimization of candidate molecules for further development as research tools or as leads for therapeutic exploration, underscoring the enzyme's value in translational research and early-stage preclinical studies.
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