CDK5R1/P35 Antibody - #DF3284
|Description:||Rabbit polyclonal antibody to CDK5R1/P35|
|Application:||WB IHC IF/ICC|
|Reactivity:||Human, Mouse, Rat|
|Prediction:||Pig, Bovine, Horse, Sheep, Dog, Chicken, Xenopus|
|Mol.Wt.:||38 KD; 34kD(Calculated).|
*The optimal dilutions should be determined by the end user.
WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.
Cite Format: Affinity Biosciences Cat# DF3284, RRID:AB_2835652.
CD5R1_HUMAN; CDK5 activator 1; CDK5P35; CDK5R; CDK5R1; Cyclin dependent kinase 5 regulatory subunit 1; Cyclin-dependent kinase 5 activator 1; Cyclin-dependent kinase 5 regulatory subunit 1; NCK 5A; Neuronal CDK5 activator; p23; p25; p35; Regulatory partner for CDK5 kinase; Tau protein kinase II 23 kDa subunit; TPKII regulatory subunit;
Brain and neuron specific.
Score>80(red) has high confidence and is suggested to be used for WB detection. *The prediction model is mainly based on the alignment of immunogen sequences, the results are for reference only, not as the basis of quality assurance.
High(score>80) Medium(80>score>50) Low(score<50) No confidence
PTMs - Q15078 As Substrate
p35 is a neuron specific activator of CDK5. The complex p35/CDK5 is required for neurite outgrowth and cortical lamination. Involved in dendritic spine morphogenesis by mediating the EFNA1-EPHA4 signaling. Activator of TPKII. The complex p35/CDK5 participates in the regulation of the circadian clock by modulating the function of CLOCK protein: phosphorylates CLOCK at 'Thr-451' and 'Thr-461' and regulates the transcriptional activity of the CLOCK-ARNTL/BMAL1 heterodimer in association with altered stability and subcellular distribution.
The p35 form is proteolytically cleaved by calpain, giving rise to the p25 form. P35 has a 5 to 10 fold shorter half-life compared to p25. The conversion results in deregulation of the CDK5 kinase: p25/CDK5 kinase displays an increased and altered tau phosphorylation in comparison to the p35/CDK5 kinase in vivo (By similarity).
Myristoylated. A proper myristoylation signal is essential for the proper distribution of p35.
Ubiquitinated. Degradation of p35 by proteasome results in down-regulation of CDK5 activity. During this process, CDK5 phosphorylates p35 and induces its ubiquitination and subsequent degradation.
Phosphorylation at Ser-8 and Thr-138 by CDK5 prevents calpain-mediated proteolysis.
Cell membrane>Lipid-anchor>Cytoplasmic side. Cell projection>Neuron projection.
Note: In the primary cortical neurons, p35 is present in the peripheries and nerve terminals.
Nucleus. Cytoplasm>Perinuclear region. Perikaryon.
Note: The conversion of p35 to p25 relocalizes the protein from the cell periphery to the cytoplasm, in nuclear and perinuclear regions. In the primary cortical neurons, p25 is primarily concentrated in the cell soma and is largely absent from neurites.
Brain and neuron specific.
Heterodimer composed of a catalytic subunit CDK5 and a regulatory subunit CDK5R1 (p25) and macromolecular complex composed of at least CDK5, CDK5R1 (p35) and CDK5RAP1 or CDK5RAP2 or CDK5RAP3. Only the heterodimer shows kinase activity. Interacts with EPHA4 and NGEF; may mediate the activation of NGEF by EPHA4 (By similarity). Interacts with RASGRF2. The complex p35/CDK5 interacts with CLOCK.
Belongs to the cyclin-dependent kinase 5 activator family.
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