CoraLite® Plus 647-conjugated P16-INK4A Polyclonal antibody

• Featured Product
• KD/KO Validated

P16-INK4A Polyclonal Antibody for FC (Intra)

Host / Isotype

Rabbit / IgG

Reactivity

human

Applications

FC (Intra)

Conjugate

CoraLite® Plus 647 Fluorescent Dye

Cat no : CL647-10883

Synonyms

CDK4I, CDKN2, CDKN2A, CMM2, INK4, INK4a, MLM, MTS 1, MTS1, Multiple tumor suppressor 1, p14, P16, p16 INK4, p16 INK4a, p16INK4, p16INK4a, P16-INK4A, P19, TP16

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Validation Data Gallery

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  FC experiment of HeLa using CL647-10883

  1x10^6 HeLa cells were intracellularly stained with 0.8 ug CoraLite® Plus 647 Anti-Human P16-INK4A (CL647-10883)(red), or 0.8 ug CoraLite® Plus 647-conjugated Rabbit IgG control Rabbit PolyAb (CL647-30000) (blue). Cells were fixed and permeabilized with Transcription Factor Staining Buffer Kit (PF00011).

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Tested Applications

• Positive FC (Intra) detected in: HeLa cells
• Positive FC detected in: HeLa cells

Recommended dilution

• Flow Cytometry (FC) (INTRA): FC (INTRA) : 0.80 ug per 10^6 cells in a 100 µl suspension
• Flow Cytometry (FC): FC : 0.80 ug per 10^6 cells in a 100 µl suspension

It is recommended that this reagent should be titrated in each testing system to obtain optimal results.

Sample-dependent, Check data in validation data gallery.

Product Information

CL647-10883 targets P16-INK4A in FC (Intra) applications and shows reactivity with human samples.

• Tested Reactivity: human
• Host / Isotype: Rabbit / IgG
• Class: Polyclonal
• Type: Antibody
• Immunogen: P16-INK4A fusion protein Ag1328
• Full Name: cyclin-dependent kinase inhibitor 2A (melanoma, p16, inhibits CDK4)
• Calculated Molecular Weight: 16 kDa
• Observed Molecular Weight: 16-18 kDa
• GenBank Accession Number: BC021998
• Gene Symbol: p16 INK4A/CDKN2A
• Gene ID (NCBI): 1029
• Conjugate: CoraLite® Plus 647 Fluorescent Dye
• Excitation/Emission Maxima Wavelengths: 654 nm / 674 nm
• Form: Liquid
• Purification Method: Antigen affinity purification
• Storage Buffer: PBS with 50% Glycerol, 0.05% Proclin300, 0.5% BSA, pH 7.3.
• Storage Conditions: Store at -20°C. Avoid exposure to light. Stable for one year after shipment. Aliquoting is unnecessary for -20^oC storage.

Background Information

Background

p16 is an important cell cycle regulator and acts as a tumor suppressor. It may also be referred to as one of a number of synonyms, including p16INK4a and cyclin-dependent kinase inhibitor 2A.

 What is the molecular weight of P16?

16kDa. P16 is encoded by the CDKN2A gene in humans and is a chain comprising 148 amino acids.

What is the function of p16?

P16 inhibits cells from progressing from G1 into S phase, binding to cyclin-dependent kinase 4 (CDK4) and inhibiting its kinase ability, so that it cannot phosphorylate the retinoblastoma tumor suppressor (RB). Without this phosphorylation, RB does not activate downstream genes, so the G1/S checkpoint cannot be passed and the cell does not proliferate (PMID: 8259215).

 What is the role of p16 in senescence?

In senescence, cells are irreversibly arrested in the cell cycle. P16 is expressed more highly in aging tissue, is associated with intrinsic cellular aging signals such as telomere shortening, and can therefore be used as a marker of senescence (PMID: 9244355; PMID: 19535234). Due to its role in cell cycle arrest, p16 drives the initiation and maintenance of a cellular senescent phenotype.

 What is the role of p16 in cancer?

As a negative regulator of proliferation, p16 is a known tumor suppressor. Mutations in the CDKN2A gene that lead to inactivation of p16 protein have been associated with an increased risk of cancer and are often observed in primary tumors and in cancer cell lines (PMID: 9508208). The inactivation of p16 has been shown to be a key early stage of tumor progression. In a small number of tumor types that are caused by the human papilloma virus (HPV), p16 is in fact overexpressed when RB is inactivated, releasing p16 and causing an accumulation (PMID: 21297668).