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Rabbit Anti-CDK5R1/p35/FITC Conjugated antibody
background:
The protein encoded by this gene (p35) is a neuron-specific activator of cyclin-dependent kinase 5 (CDK5); the activation of CDK5 is required for proper development of the central nervous system. The p35 form of this protein is proteolytically cleaved by calpain, generating a p25 form. The cleavage of p35 into p25 results in relocalization of the protein from the cell periphery to nuclear and perinuclear regions. P25 deregulates CDK5 activity by prolonging its activation and changing its cellular location. The p25 form accumulates in the brain neurons of patients with Alzheimer's disease. This accumulation correlates with an increase in CDK5 kinase activity, and may lead to aberrantly phosphorylated forms of the microtubule-associated protein tau, which contributes to Alzheimer's disease. [provided by RefSeq, Jul 2008]
Function:
p35 is a neuron specific activator of CDK5. The complex p35/CDK5 is required for neurite outgrowth and cortical lamination. Activator of TPKII.
Subunit:
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. [INTERACTION] Q6ZMQ8-1:AATK; NbExp=2; IntAct=EBI-746189, EBI-2008436; Q6ZMQ8-2:AATK; NbExp=6; IntAct=EBI-746189, EBI-2008441; Q00535:CDK5; NbExp=5; IntAct=EBI-746189, EBI-1041567. [SUBCELLULAR LOCATION] Cyclin-dependent kinase 5 activator 1, p35: Cell membrane; Lipid-anchor; Cytoplasmic side (Probable). Note=In the primary cortical neurons, p35 is present in the peripheries and nerve terminals.
Subcellular Location:
Cell membrane. In the primary cortical neurons, p35 is present in the peripheries and nerve terminals and Nucleus. Cytoplasm > perinuclear region. 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.
Tissue Specificity:
Brain and neuron specific.
Post-translational modifications:
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.
Probably myristoylated. The Gly-2-Ala mutant is absent of the cell periphery, suggesting that a proper myristoylation signal is essential for the proper distribution of p35.
Similarity:
Belongs to the cyclin-dependent kinase 5 activator family.
Database links:
Entrez Gene: 8851 Human
Entrez Gene: 12569 Mouse
Entrez Gene: 116671 Rat
Omim: 60392 Human
SwissProt: Q28199 Cow
SwissProt: Q15078 Human
SwissProt: P6369 Mouse
SwissProt: A7LNG6 Pig
SwissProt: P61810 Rat
Unigene: 500015 Human
Unigene: 142275 Mouse
Unigene: 474282 Mouse
Unigene: 11213 Rat
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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