Product Details

Uniprot No.

P24941

Target Names

CDK2

Alternative Names

Cyclin-dependent kinase 2 (EC 2.7.11.22) (Cell division protein kinase 2) (p33 protein kinase), CDK2, CDKN2

Species Reactivity

Human, Mouse

Immunogen

A synthesized peptide derived from human Cdk2

Immunogen Species

Homo sapiens (Human)

Conjugate

Non-conjugated

Clonality

Monoclonal

Isotype

Rabbit IgG

Clone No.

6A5

Purification Method

Affinity-chromatography

Concentration

It differs from different batches. Please contact us to confirm it.

Buffer

Rabbit IgG in 10mM phosphate buffered saline , pH 7.4, 150mM sodium chloride, 0.05% BSA, 0.02% sodium azide and 50% glycerol.

Form

Liquid

Tested Applications

ELISA, WB, IHC

Recommended Dilution

Application	Recommended Dilution
WB	1:500-1:5000
IHC	1:50-1:200

Protocols

ELISA Protocol
Western Blotting(WB) Protocol
Immunohistochemistry (IHC) Protocol

Troubleshooting and FAQs

Antibody FAQs

Storage

Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.

Lead Time

Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.

Description

Cyclin-dependent kinase 2 (CDK2) serves as a critical regulator of cell cycle progression, orchestrating the G1/S and S/G2 transitions through phosphorylation of key substrates. This serine/threonine kinase forms active complexes with cyclins E and A, making it an essential node in proliferation control and a compelling target in cancer research, cell biology, and studies of signal transduction pathways.

This recombinant monoclonal antibody, generated against a synthetic peptide derived from human CDK2, offers the reproducibility and consistency that demanding experimental workflows require. Because recombinant antibodies are produced from defined sequences rather than hybridoma supernatants, researchers benefit from lot-to-lot uniformity that supports longitudinal studies and ensures comparable results across experiments. The rabbit IgG format, purified by affinity chromatography, delivers the specificity expected from a monoclonal clone while maintaining the sensitivity characteristic of rabbit-derived antibodies.

Validation studies demonstrate robust performance across multiple platforms. In western blot applications, this antibody detects CDK2 at the expected 34 kDa molecular weight across a diverse panel of human cell lines including K562, HEK293, HeLa, HL-60, and A549, as well as mouse NIH/3T3 cells, confirming reliable cross-species reactivity between human and mouse samples. For immunohistochemistry, testing in paraffin-embedded human tonsil tissue shows clear target visualization, supporting researchers working with archival clinical specimens or tissue microarrays.

Whether investigating cell cycle dysregulation in oncology models, exploring CDK2's emerging roles in neuroscience, or examining epigenetic signaling networks, this antibody provides a dependable tool with the flexibility to move seamlessly between biochemical and morphological analyses.

Usage

For Research Use Only. Not for use in diagnostic or therapeutic procedures.

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Target Background

Function

Serine/threonine-protein kinase involved in the control of the cell cycle; essential for meiosis, but dispensable for mitosis. Phosphorylates CTNNB1, USP37, p53/TP53, NPM1, CDK7, RB1, BRCA2, MYC, NPAT, EZH2. Triggers duplication of centrosomes and DNA. Acts at the G1-S transition to promote the E2F transcriptional program and the initiation of DNA synthesis, and modulates G2 progression; controls the timing of entry into mitosis/meiosis by controlling the subsequent activation of cyclin B/CDK1 by phosphorylation, and coordinates the activation of cyclin B/CDK1 at the centrosome and in the nucleus. Crucial role in orchestrating a fine balance between cellular proliferation, cell death, and DNA repair in human embryonic stem cells (hESCs). Activity of CDK2 is maximal during S phase and G2; activated by interaction with cyclin E during the early stages of DNA synthesis to permit G1-S transition, and subsequently activated by cyclin A2 (cyclin A1 in germ cells) during the late stages of DNA replication to drive the transition from S phase to mitosis, the G2 phase. EZH2 phosphorylation promotes H3K27me3 maintenance and epigenetic gene silencing. Phosphorylates CABLES1. Cyclin E/CDK2 prevents oxidative stress-mediated Ras-induced senescence by phosphorylating MYC. Involved in G1-S phase DNA damage checkpoint that prevents cells with damaged DNA from initiating mitosis; regulates homologous recombination-dependent repair by phosphorylating BRCA2, this phosphorylation is low in S phase when recombination is active, but increases as cells progress towards mitosis. In response to DNA damage, double-strand break repair by homologous recombination a reduction of CDK2-mediated BRCA2 phosphorylation. Phosphorylation of RB1 disturbs its interaction with E2F1. NPM1 phosphorylation by cyclin E/CDK2 promotes its dissociates from unduplicated centrosomes, thus initiating centrosome duplication. Cyclin E/CDK2-mediated phosphorylation of NPAT at G1-S transition and until prophase stimulates the NPAT-mediated activation of histone gene transcription during S phase. Required for vitamin D-mediated growth inhibition by being itself inactivated. Involved in the nitric oxide- (NO) mediated signaling in a nitrosylation/activation-dependent manner. USP37 is activated by phosphorylation and thus triggers G1-S transition. CTNNB1 phosphorylation regulates insulin internalization. Phosphorylates FOXP3 and negatively regulates its transcriptional activity and protein stability. Phosphorylates CDK2AP2. Phosphorylates ERCC6 which is essential for its chromatin remodeling activity at DNA double-strand breaks.

Gene References into Functions

Results indicate that although PIN1 increases p27 levels, it also attenuates p27's inhibitory activity on CDK2 and thereby contributes to increased G1-S phase transitions and cell proliferation. PMID: 29118189
CDK2 mutation is not associated with non-obstructive azoospermia. PMID: 29373224
Proteomics and phosphoproteomics analyses identified CDK2 as a driver of resistance to both BRAF and Hsp90 inhibitors and its expression is regulated by the transcription factor MITF upon XL888 treatment of melanoma cells. PMID: 29507054
identified a new phosphorylation-based substrate recognition mechanism of PTPN12 by CDK2, which orchestrated signaling crosstalk between the oncogenic CDK2 and HER2 pathways PMID: 28842430
CDK2 gene is a strong candidate gene for type-2 diabetes. CDK2 gene is located in a risk area composed of 4 blocks in strong LD around the type-2 diabetes SNP rs2069408. CDK2 overexpression inhibits the association of insulin receptor to the microtubule components, tubulin alpha and tubulin beta. Physical association of the insulin receptor complex with CDK2 is inhibited by the expression of tyrosine phosphatase PTPLAD1. PMID: 30300385
Among these genes, STAT3 and CDK2 were significantly associated with recurrence. Further study suggested that inhibition of CDK2 reduced invasion of Pca cell lines. The invasion ability was rescued after reintroduction of CDK2. PMID: 29323532
The roles of the CDK2/SIRT5 axis in gastric cancer. PMID: 29896817
CDK2 may have key functions in neuroblastoma progression by regulating the expression of neoplastic genes. PMID: 29328425
The authors show that human Cyclin-Dependent-Kinases (CDKs) target the RAD9 subunit of the 9-1-1 checkpoint clamp on Thr292, to modulate DNA damage checkpoint activation. Thr292 phosphorylation on RAD9 creates a binding site for Polo-Like-Kinase1 (PLK1), which phosphorylates RAD9 on Thr313. PMID: 29254517
this study suggests that CDK2 and CDK9 are potential therapeutic targets in Neuroblastoma (NB) and that abrogating CDK2 and CDK9 activity by small molecules like dinaciclib is a promising strategy and a treatment option for NB patients PMID: 27378523
LINC00958 acts as an oncogenic gene in the gliomagenesis through miR-203-CDK2 regulation, providing a novel insight into glioma tumorigenesis. PMID: 29570358
These compounds bind CDK2/ Cyclin A, inhibit its kinase activity, compete with substrate binding, but not with ATP, and dock onto the T-loop of CDK2. The best compound also binds CDK4 and CDK4/Cyclin D1, but not CDK1. PMID: 28430399
CDK2 contributes to S81-AR phosphorylation and transactivation while CDK4 was not shown to be involved in this process. PMID: 29157894
Our findings provide a rationale for clinical use of Bcl-2 family inhibitors in combination with CDK2 inhibitors for treatment of Mcl-1-dependent colorectal tumours associated with expression of Bcl-2, Bcl-XL and Bcl-w proteins. In addition, we have shown potential of CDK2 inhibitors for treatment of tumours expressing R273H mutant p53. PMID: 29372687
CDK2 phosphorylates polyQ-AR specifically at Ser(96). Phosphorylation of polyQ-AR by CDK2 increased protein stabilization and toxicity and is negatively regulated by the adenylyl cyclase/protein kinase A signaling pathway in spinobulbar muscular atrophy. PMID: 28003546
Data show that Noxa-mediated MCL-1 phosphorylation and degradation is regulated by CDK2. PMID: 27166195
The upregulation of miR-302b reduced the expression of CDK2, and inhibited ERK signaling pathway, thereby inhibiting cell proliferation and G1/S phase conversion rate. PMID: 27465546
High CDK2 expression is associated with breast cancer. PMID: 28760857
Here, we introduce a transcriptional signature to specifically track CDK2 activity. It responds to genetic and chemical perturbations in the CDK-RB-E2F axis, correlates with mitotic rate in vitro and in vivo and reacts rapidly to changes in CDK2 activity during cell cycle progression PMID: 27819669
Here, we found that centrosomal protein of 76 kDa (Cep76), previously shown to restrain centriole amplification, interacts with cyclin-dependent kinase 2 (CDK2) and is a bona fide substrate of this kinase. Cep76 is preferentially phosphorylated by cyclin A/CDK2 at a single site S83, and this event is crucial to suppress centriole amplification in S phase PMID: 27065328
The authors find that Spy1 confers structural changes to Cdk2 that obviate the requirement of Cdk activation loop phosphorylation. PMID: 28666995
CDK2 serves as an important nexus linking primary beta-cell dysfunction to progressive beta-cell mass deterioration in diabetes PMID: 28100774
a SUMO-deficient Rb mutant results in reduced SUMOylation and phosphorylation, weakened CDK2 binding, and attenuated E2F-1 sequestration. PMID: 27163259
These two states are separated by different metastable states that share hybrid structural features with both forms of the kinase. In contrast, the CDK2/ANS complex landscape is compatible with a conformational selection picture where the binding of ANS in proximity of the alphaC helix causes a population shift toward the inactive conformation PMID: 27100206
Dsg2 knockdown arrests non-small cell lung cancer cell cycle progression via modulation of p27-CDK2 levels. PMID: 27629878
CDK2 protects podocytes from apoptosis and reduced expression of CDK2 associates with the development of diabetic nephropathy. PMID: 26876672
CDK2 controls a wide-spread epigenetic program that drives transcription at differentiation-related gene promoters specifically in G1. (Review) PMID: 26857166
SATB2 regulates the mitosis of cell cycle and affects G1 cell cycle via interaction with CDK2. PMID: 26714749
A novel link has been discussed between CDK2 expression and cell migration by characterizing the CDK2-mediated phosphorylation of BRMS1. PMID: 26730572
the results suggest that CK1delta activity can be modulated by the interplay between CK1delta and CDK2/E or CDK5/p35. PMID: 26464264
Inappropriate activation of CDK2 in S phase underlies the sensitivity of a subset of cell lines to Chk1 inhibitors. PMID: 26595527
CDK2 and DNA-PK regulate PR transcriptional activity by distinct mechanisms. PMID: 26652902
The expression of cdk2 in malignancy of ovarian tumors. PMID: 26828990
PHD1 is phosphorylated by CDK2, CDK4 and CDK6 at Serine 130. PMID: 26644182
Results show that miR-200c plays an antioncogenic role in clear cell renal cell carcinomas, through controlling cell growth and cell-cycle progression by downregulating the G1-S regulator CDK2. PMID: 26248649
show thata combining cyclin-dependent kinase 2 (CDK2) antagonism and ubiquitin thioesterase 33 (USP33) depletion augments anaphase catastrophe via changes in centrosomal protein of 110 kDa (CP110) protein expression. PMID: 26304236
Foxo3 circular RNA retards cell cycle progression via forming ternary complexes with p21 and CDK2. PMID: 26861625
our study reveals a novel function of CDK2 in EGF-induced cell transformation and the associated signal transduction pathways. This indicates that CDK2 is a useful molecular target for the chemoprevention and therapy against skin cancer. PMID: 26028036
both cell lines feature a significant reduction of CDK2 expression verified at the RNA and protein level, respectively PMID: 26555773
Centriolar satellites build a centrosomal microcephaly protein complex critical for human neurodevelopment that promotes CDK2 centrosomal localization and centriole duplication. PMID: 26297806
Identified ING5 as a novel CDK2 substrate. ING5 is phosphorylated at a single site, threonine 152, by cyclin E/CDK2 and cyclin A/CDK2. This site is also phosphorylated in cells in a cell cycle dependent manner, consistent with it being a CDK2 substrate. PMID: 25860957
fluspirilene is a potential CDK2 inhibitor and a candidate anti-cancer drug for the treatment of human hepatocellular carcinoma. PMID: 26147897
analysis of the conformational characteristics and ligand binding mechanisms of CDK2 [review] PMID: 25918937
Which is mutated at the CDK2 phosphorylation site. PMID: 25154617
observations suggested that androgen suppresses the proliferation of CRPC cells partially through inhibition of Cyclin A, Cdk2, and Skp2 PMID: 25271736
A positive correlation between cdk2/cyclin A expression level and tumor growth. Amygdalin, therefore, may block tumor growth. PMID: 25136960
Report structure-based discovery of allosteric inhibitors of CDK2. PMID: 24911186
Sox2 phosphorylation by Cdk2 promotes the establishment but not the maintenance of the pluripotent state. PMID: 26139602
Inhibition of CDK2 phosphorylation blocked phosphorylation of hnRNP K, preventing its incorporation into stress granules (SGs). Due to interaction between hnRNP K with TDP-43, the loss of hnRNP K from SGs prevented accumulation of TDP-43. PMID: 25410660
The docking and molecular dynamics investigation performed here led to the identification of the interactions responsible for stabilizing the ligand ChEMBL474807 at the active sites of the glycogen synthase kinase-3beta (GSK-3) and cyclin-dependent kinase-2 PMID: 25754137

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Subcellular Location

Cytoplasm, cytoskeleton, microtubule organizing center, centrosome. Nucleus, Cajal body. Cytoplasm. Endosome. Note=Localized at the centrosomes in late G2 phase after separation of the centrosomes but before the start of prophase. Nuclear-cytoplasmic trafficking is mediated during the inhibition by 1,25-(OH)(2)D(3).

Protein Families

Protein kinase superfamily, CMGC Ser/Thr protein kinase family, CDC2/CDKX subfamily

Database Links

HGNC: 1771

OMIM: 116953

KEGG: hsa:1017

STRING: 9606.ENSP00000266970

UniGene: Hs.19192

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Code	CSB-RA961467A0HU
Size	US$210
	Order now
Image	Western Blot Positive WB detected in: K562 whole cell lysate, HEK293 whole cell lysate, NIH/3T3 whole cell lysate, Hela whole cell lysate, HL-60 whole cell lysate, A549 whole cell lysate All lanes: CDK2 antibody at 1:1000 Secondary Goat polyclonal to rabbit IgG at 1/50000 dilution Predicted band size: 34, 31 kDa Observed band size: 34 kDa IHC image of CSB-RA961467A0HU diluted at 1:100 and staining in paraffin-embedded human tonsil tissue performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4℃ overnight. The primary is detected by a Goat anti-rabbit IgG polymer labeled by HRP and visualized using 0.05% DAB.
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CDK2 Recombinant Monoclonal Antibody

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Target Background