2. Signaling Pathways
  3. Cell Cycle/DNA Damage
  4. CDK
  5. CDK4 Isoform

CDK4

Cyclin-dependent kinase 4 also known as cell division protein kinase 4 is an enzyme that in humans is encoded by the CDK4 gene. CDK4 is a member of the cyclin-dependent kinase family.It is a catalytic subunit of the protein kinase complex that is important for cell cycle G1 phase progression. The activity of this kinase is restricted to the G1-S phase, which is controlled by the regulatory subunits D-type cyclins and CDK inhibitor p16INK4a. This kinase was shown to be responsible for the phosphorylation of retinoblastoma gene product (Rb). Ser/Thr-kinase component of cyclin D-CDK4 (DC) complexes that phosphorylate and inhibit members of the retinoblastoma (RB) protein family including RB1 and regulate the cell-cycle during G1/S transition. Phosphorylation of RB1 allows dissociation of the transcription factor E2F from the RB/E2F complexes and the subsequent transcription of E2F target genes which are responsible for the progression through the G1 phase. Hypophosphorylates RB1 in early G1 phase. Cyclin D-CDK4 complexes are major integrators of various mitogenic and antimitogenic signals. Also phosphorylates SMAD3 in a cell-cycle-dependent manner and represses its transcriptional activity. Component of the ternary complex, cyclin D/CDK4/CDKN1B, required for nuclear translocation and activity of the cyclin D-CDK4 complex.

Cat. No. Product Name Effect Purity
  • HY-50767
    Palbociclib
    		Inhibitor 99.94%
    Palbociclib (PD 0332991) is an orally active selective CDK4 and CDK6 inhibitor with IC50 values of 11 and 16 nM, respectively. Palbociclib has potent anti-proliferative activity and induces cell cycle arrest in cancer cells, which can be used in the research of HR-positive and HER2-negative breast cancer and hepatocellular carcinoma.
  • HY-16297A
    Abemaciclib
    		Inhibitor 99.94%
    Abemaciclib (LY2835219) is a selective CDK4/6 inhibitor with IC50 values of 2 nM and 10 nM for CDK4 and CDK6, respectively.
  • HY-15777
    Ribociclib
    		Inhibitor 99.94%
    RRibociclib (LEE011) is an ATP-competitive and orally active CDK4/6 inhibitor with IC50 values of 10 nM and 39 nM, respectively, and is over 1,000-fold less potent against the cyclin B/CDK1 complex.
  • HY-10005
    Flavopiridol
    		Inhibitor 99.73%
    Flavopiridol (Alvocidib) is a broad spectrum and competitive inhibitor of CDKs, inhibiting CDK1, CDK2, CDK4 with IC50s of 30, 170, 100 nM, respectively.
  • HY-101563
    GSK3326595
    		99.97%
    GSK3326595 is a protein arginine methyltransferase 5 (PRMT5) inhibitor. GSK3326595 decreases SARS-CoV-2 infection, inhibits cancer cell proliferation and induces pro-inflammatory macrophage polarization and increases hepatic triglyceride levels without affecting atherosclerosis. GSK3326595 can be used for research of relapsed/refractory mantle cell lymphoma.
  • HY-163786
    PROTAC CDK4/6 degrader 1
    		Degrader 98.88%
    PROTAC CDK4/6 degrader 1 (Compound 7f) is a dual degrader for CDK4 and CDK6 with DC50 of 10.5 and 2.5 nM. PROTAC CDK4/6 degrader 1 inhibits the proliferation of cell Jurkat (IC50 is 0.18 μM), arrests the cell cycle at G1 phase and induces apoptosis. (Pink: ligand for target protein YY173 (HY-163787); Black: linker (HY-163788); Blue: ligand for E3 ligase (HY-10984))
  • HY-163856
    CDK7-IN-30
    		Inhibitor
    CDK7-IN-30 (Compound 22) is a CDK7 inhibitor (IC50 = 7.21 nM) that effectively inhibits the phosphorylation of RNA Polymerase II and CDK2. CDK7-IN-30 CDK7-IN-30 can induce cell apoptosis and has anti-cancer activity and can be used in cancer research.
  • HY-159155
    CDK2/4-IN-1
    		Inhibitor
    CDK2/4-IN-1 (compound B-4a) is a CDK2/4 inhibitor and a tubulin polymerization inhibitor. CDK2/4-IN-1 can be used in cancer research.
  • HY-50767A
    Palbociclib monohydrochloride
    		Inhibitor 99.98%
    Palbociclib (PD 0332991) monohydrochloride is an orally active selective CDK4 and CDK6 inhibitor with IC50 values of 11 and 16 nM, respectively. Palbociclib monohydrochloride has potent anti-proliferative activity and induces cell cycle arrest in cancer cells, which can be used in the research of HR-positive and HER2-negative breast cancer and hepatocellular carcinoma.
  • HY-16297
    Abemaciclib methanesulfonate
    		Inhibitor 99.95%
    Abemaciclib methanesulfonate (LY2835219 methanesulfonate) is a selective CDK4/6 inhibitor with IC50s of 2 nM and 10 nM for CDK4 and CDK6, respectively.
  • HY-A0065
    Palbociclib isethionate
    		Inhibitor 99.99%
    Palbociclib (PD 0332991) isethionate is an orally active selective CDK4 and CDK6 inhibitor with IC50 values of 11 and 16 nM, respectively. Palbociclib isethionate has potent anti-proliferative activity and induces cell cycle arrest in cancer cells, which can be used in the research of HR-positive and HER2-negative breast cancer and hepatocellular carcinoma.
  • HY-139450
    Atirmociclib
    		Inhibitor 99.87%
    Atirmociclib (PF-07220060; example A94) is a potent CDK4/CDK6 inhibitor with a Ki of 0.6 nM and 13.9 nM for CDK4/Cyclin D1 and CDK6/Cyclin D3, respectively.
  • HY-103248
    Toyocamycin
    		Inhibitor 99.90%
    Toyocamycin (Vengicide) is an adenosine analog produced by Streptomyces diastatochromogenes, acts as an XBP1 inhibitor. Toyocamycin blocks RNA synthesis and ribosome function, and induces apoptosis. Toyocamycin affects IRE1α-XBP1 pathway, and inhibits XBP1 mRNA cleavage with an IC50 value of 80 nM with affecting IRE1α auto-phosphorylation. Toyocamycin specifically inhibits CDK9 with an IC50 value of 79 nM.
  • HY-10008
    SNS-032
    		Inhibitor 99.54%
    SNS-032 (BMS-387032) is a potent and selective inhibitor of?CDK2, CDK7, and CDK9 with?IC50s?of 38 nM, 62 nM and 4 nM, respectively. SNS-032 has antitumor effect.
  • HY-10580
    GSK 3 Inhibitor IX
    		Inhibitor 99.74%
    GSK 3 Inhibitor IX (6-Bromoindirubin-3'-oxime; BIO) is a potent, selective, reversible and ATP-competitive inhibitor of GSK-3α/β and CDK1-cyclinB complex with IC50s of 5 nM/320 nM/80 nM for (GSK-3α/β)/CDK1/CDK5, respectively.
  • HY-50940
    AT7519
    		Inhibitor 99.76%
    AT7519 (AT7519M) as a potent inhibitor of CDKs, with IC50s of 210, 47, 100, 13, 170, and <10 nM for CDK1, CDK2, CDK4 to CDK6, and CDK9, respectively.
  • HY-103712A
    Samuraciclib hydrochloride
    		Inhibitor 99.98%
    Samuraciclib hydrochloride (CT7001 hydrochloride) is a potent, selective, ATP-competitive and orally active CDK7 inhibitor, with an IC50 of 41 nM. Samuraciclib hydrochloride displays 45-, 15-, 230- and 30-fold selectivity over CDK1, CDK2 (IC50 of 578 nM), CDK5 and CDK9, respectively. Samuraciclib hydrochloride inhibits the growth of breast cancer cell lines with GI50 values between 0.2-0.3 µM. Samuraciclib hydrochloride has anti-tumor effects.
  • HY-10329
    JNJ-7706621
    		Inhibitor 99.91%
    JNJ-7706621 is a potent aurora kinase inhibitor, and also inhibits CDK1 and CDK2, with IC50s of 9 nM, 3 nM, 11 nM, and 15 nM for CDK1, CDK2, aurora-A and aurora-B, respectively.
  • HY-50767C
    Palbociclib hydrochloride
    		Inhibitor 99.93%
    Palbociclib (PD 0332991) hydrochloride is an orally active selective CDK4 and CDK6 inhibitor with IC50 values of 11 and 16 nM, respectively. Palbociclib hydrochloride has potent anti-proliferative activity and induces cell cycle arrest in cancer cells. Palbociclib hydrochloride can be used in the research of HR-positive and HER2-negative breast cancer and hepatocellular carcinoma.
  • HY-15777A
    Ribociclib hydrochloride
    		Inhibitor 99.95%
    Ribociclib hydrochloride (LEE011 hydrochloride) is a highly specific CDK4/6 inhibitor with IC50 values of 10 nM and 39 nM, respectively, and is over 1,000-fold less potent against the cyclin B/CDK1 complex.
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity