Human p15INK4b/CDKN2B Antibody

  
  • Species Reactivity
    Human
  • Specificity
    Detects human p15INK4b/CDKN2B in direct ELISAs and Western blots. In Western blots, approximately 50% cross-reactivity with recombinant human (rh) p16INK4a and no cross-reactivity with rhp18INK4c or rhp19INK4d is observed.
  • Source
    Monoclonal Mouse IgG2B Clone # 651308
  • Purification
    Protein A or G purified from hybridoma culture supernatant
  • Immunogen
    E. coli-derived recombinant human p15INK4b/CDKN2B
    Arg2-Asp138
    Accession # P42772
  • Formulation
    Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Western Blot
    1 µg/mL
    See below
  • Immunocytochemistry
    3-25 µg/mL
    See below
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Data Examples
Detection of Human p15INK4b/CDKN2B by Western Blot. Western blot shows lysates of 293T human embryonic kidney cell line and HeLa human cervical epithelial carcinoma cell line. PVDF Membrane was probed with 1 µg/mL of Mouse Anti-Human p15INK4b/CDKN2B Monoclonal Antibody (Catalog # MAB6798) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF007). A specific band was detected for p15INK4b/CDKN2B at approximately 15 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Immunocytochemistry
p15INK4b/CDKN2B in HeLa Human Cell Line. p15INK4b/CDKN2B was detected in immersion fixed HeLa human cervical epithelial carcinoma cell line using Mouse Anti-Human p15INK4b/CDKN2B Monoclonal Antibody (Catalog # MAB6798) at 3 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.
Preparation and Storage
  • Reconstitution
    Sterile PBS to a final concentration of 0.5 mg/mL.
  • Shipping
    The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
  • Stability & Storage
    Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
    • 12 months from date of receipt, -20 to -70 °C as supplied.
    • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
    • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: p15INK4b/CDKN2B
p15INK4B is an approximately 15 kDa member of the p16INK4 family. Human p15INK4B is 138 amino acids (aa) in length and contains four ankyrin repeats, a common structural sequence found in members of the INK4 family. The first 50 aa of p15INK4B share 44% sequence identity with p16INK4. Following this is an 81 aa region sharing 97% sequence identity, after which the two proteins diverge. Human p15INK4B shares 83% aa sequence identity with mouse and rat p15INK4B. Functionally, p15INK4B interacts strongly with CDK4 and CDK6 and is a potent inhibitor. p15INK4B can potentially induce cell cycle arrest by acting as an effector of TGF-beta.
  • Long Name:
    p15 Cyclin Dependent Kinase 4 Inhibitor 2B
  • Entrez Gene IDs:
    1030 (Human); 12579 (Mouse); 25164 (Rat)
  • Alternate Names:
    CDK4I; CDKN2B; cyclin-dependent kinase inhibitor 2B (p15, inhibits CDK4); cyclin-dependent kinases 4 and 6 binding protein; INK4BCDK4B inhibitor; MTS2; MTS-2; MTS2CDK inhibitory protein; Multiple tumor suppressor 2; p14_CDK inhibitor; p14_INK4B; p14-INK4b; p15 CDK inhibitor; p15_INK4B; P15cyclin-dependent kinase 4 inhibitor B; p15INK4b; p15-INK4b; TP15
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