Mouse Anti-CDKN1B Recombinant Antibody (clone ABT-p27) (CAT#: VS3-CJ974)

• Immunogen
• Synthesized peptide derived from human p27Kip1

• Host Species
• Mouse

• Type
• Mouse IgG1, κ

• Specificity
• Human CDKN1B

• Species Reactivity
• Human

• Clone
• ABT-p27

• Applications
• IHC-P

• Conjugate
• Unconjugated

• Purification
• Affinity Chromatography

• Purity
• >95% as determined by SDS-PAGE

• Format
• Liquid

• Buffer
• 50% Glycerol, 0.5% BSA, PBS.

• Preservative
• 0.02% Sodium Azide

• Storage
• Store at 4°C for short term. Aliquot and store at -20°C for long term. Avoid repeated freeze/thaw cycles.

• Application Notes
• This antibody has been tested for use in Immunohistochemistry-Parraffin (1:100-1:500).

• Alternative Names
• KIP1; MEN4; CDKN4; MEN1B; P27KIP1

• Gene ID
• 1027

• UniProt ID
• P46527

• Sequence Similarities
• Belongs to the CDI family.

• Cellular Localization
• Cytoplasm, Endosome, Nucleus

• Post Translation Modifications
• Phosphorylated; phosphorylation occurs on serine, threonine and tyrosine residues. Phosphorylation on Ser-10 is the major site of phosphorylation in resting cells, takes place at the G0-G1 phase and leads to protein stability. Phosphorylation on other sites is greatly enhanced by mitogens, growth factors, cMYC and in certain cancer cell lines. The phosphorylated form found in the cytoplasm is inactivate. Phosphorylation on Thr-198 is required for interaction with 14-3-3 proteins. Phosphorylation on Thr-187, by CDK1 and CDK2 leads to protein ubiquitination and proteasomal degradation. Tyrosine phosphorylation promotes this process. Phosphorylation by PKB/AKT1 can be suppressed by LY294002, an inhibitor of the catalytic subunit of PI3K. Phosphorylation on Tyr-88 and Tyr-89 has no effect on binding CDK2, but is required for binding CDK4. Dephosphorylated on tyrosine residues by G-CSF.
  Ubiquitinated; in the cytoplasm by the KPC complex (composed of RNF123/KPC1 and UBAC1/KPC2) and, in the nucleus, by SCF(SKP2). The latter requires prior phosphorylation on Thr-187. Ubiquitinated; by a TRIM21-containing SCF(SKP2)-like complex; leads to its degradation.
  Subject to degradation in the lysosome. Interaction with SNX6 promotes lysosomal degradation (By similarity).

• Protein Refseq
• NP_004055.1

• Function
• Important regulator of cell cycle progression. Inhibits the kinase activity of CDK2 bound to cyclin A, but has little inhibitory activity on CDK2 bound to SPDYA (PubMed:28666995).
  Involved in G1 arrest. Potent inhibitor of cyclin E- and cyclin A-CDK2 complexes. Forms a complex with cyclin type D-CDK4 complexes and is involved in the assembly, stability, and modulation of CCND1-CDK4 complex activation. Acts either as an inhibitor or an activator of cyclin type D-CDK4 complexes depending on its phosphorylation state and/or stoichometry.

Secondary Antibody

• 2RD-A1460-YJ
• Goat Anti-Mouse IgG1 Secondary antibody

• 2RD-A1562-YJ
• Rabbit Anti-Mouse IgG1 Secondary antibody (Clone RM106)

Recommended Dilution Buffer

• MRO-0253YJ
• Reconstitution Buffer PBS