• Western blot analysis of extracts of NIH/3T3 cells, using Phospho-CDK4-T172 pAb (STJ29359) at 1:1000 dilution or CDK4 antibody (STJ23055).NIH/3T3 cells were treated by Hydroxyurea (4 mM) at 37℃ for 20 hours.Secondary antibody: HRP Goat Anti-Rabbit IgG (H+L) at 1:10000 dilution.Lysates/proteins: 25ug per lane.Blocking buffer: 3% BSA.Detection: ECL Basic Kit.Exposure time: 60s.

Anti-Phospho-CDK4-T172 antibody (STJ29359)

SKU:
STJ29359
Current Stock:
Host: Rabbit
Applications: WB
Reactivity: Human, Mouse, Rat
Short Description: Rabbit polyclonal primary antibody against CDK4.
Note: FOR RESEARCH USE ONLY (RUO).
Clonality: Polyclonal
Conjugation: Unconjugated
Formulation: PBS with 0.02% sodium azide, 50% glycerol, pH7.3.
Purification: Affinity purification
Storage Instruction: Store at-20°C. Avoid freeze/thaw cycles.
Isotype: IgG
Dilution Range: WB: 1:500-1:2000
Uniprot ID: CDK4_HUMAN
Gene ID: 1019
Gene Symbol: CDK4
Immunogen: A synthetic phosphorylated peptide around T172 of human CDK4 (NP_000066.1).
Background The protein encoded by this gene is a member of the Ser/Thr protein kinase family. This protein is highly similar to the gene products of S. cerevisiae cdc28 and S. pombe cdc2. 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 p16 (INK4a). This kinase was shown to be responsible for the phosphorylation of retinoblastoma gene product (Rb). Mutations in this gene as well as in its related proteins including D-type cyclins, p16 (INK4a) and Rb were all found to be associated with tumorigenesis of a variety of cancers. Multiple polyadenylation sites of this gene have been reported.
Post Translational Modifications Phosphorylation at Thr-172 is required for enzymatic activity. Phosphorylated, in vitro, at this site by CCNH-CDK7, but, in vivo, appears to be phosphorylated by a proline-directed kinase. In the cyclin D-CDK4-CDKN1B complex, this phosphorylation and consequent CDK4 enzyme activity, is dependent on the tyrosine phosphorylation state of CDKN1B. Thus, in proliferating cells, CDK4 within the complex is phosphorylated on Thr-172 in the T-loop. In resting cells, phosphorylation on Thr-172 is prevented by the non-tyrosine-phosphorylated form of CDKN1B.
Function 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 G(1)/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 G(1) phase. Hypophosphorylates RB1 in early G(1) phase. Cyclin D-CDK4 complexes are major integrators of various mitogenenic 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.
Database Links Reactome: R-HSA-187577
Cellular Localisation Cytoplasm
Nucleus
Nucleus Membrane
Cytoplasmic When Non-Complexed
Forms A Cyclin D-Cdk4 Complex In The Cytoplasm As Cells Progress Through G(1) Phase
The Complex Accumulates On The Nuclear Membrane And Enters The Nucleus On Transition From G(1) To S Phase
Also Present In Nucleoli And Heterochromatin Lumps
Colocalizes With Rb1 After Release Into The Nucleus
Protein Name Cyclin-Dependent Kinase 4
Cell Division Protein Kinase 4
Psk-J3
Alternative Names Anti-Cyclin-Dependent Kinase 4 antibody
Anti-Cell Division Protein Kinase 4 antibody
Anti-Psk-J3 antibody
Anti-CDK4 antibody
6 months standard