Phospho-ATR (Ser428) Antibody

Polyclonal Antibody

ATR

Ataxia telangiectasia and Rad3 related antibody, Ataxia telangiectasia and Rad3-related protein antibody, ATR antibody, ATR_HUMAN antibody, FCTCS antibody, FRAP Related Protein 1 antibody, FRAP-related protein 1 antibody, FRP1 antibody, MEC1 antibody, MEC1 mitosis entry checkpoint 1 homolog antibody, Protein kinase ATR antibody, RAC3 antibody, Rad3 related protein antibody, SCKL antibody, SCKL1 antibody, Serine/threonine protein kinase ATR antibody, Serine/threonine-protein kinase ATR antibody

Peptide sequence around phosphorylation site of serine 428 (G-I-S(p)-P-K) derived from Human ATR.

Serine/threonine protein kinase which activates checkpoint signaling upon genotoxic stresses such as ionizing radiation (IR), ultraviolet light (UV), or DNA replication stalling, thereby acting as a DNA damage sensor. Recognizes the substrate consensus sequence [ST]-Q. Phosphorylates BRCA1, CHEK1, MCM2, RAD17, RPA2, SMC1 and p53/TP53, which collectively inhibit DNA replication and mitosis and promote DNA repair, recombination and apoptosis. Phosphorylates 'Ser-139' of histone variant H2AX/H2AFX at sites of DNA damage, thereby regulating DNA damage response mechanism. Required for FANCD2 ubiquitination. Critical for maintenance of fragile site stability and efficient regulation of centrosome duplication.

Antibodies were produced by immunizing rabbits with synthetic phosphopeptide and KLH conjugates. Antibodies were purified by affinity-chromatography using epitope-specific phosphopeptide. Non-phospho specific antibodies were removed by chromatogramphy usi

Epigenetics and Nuclear Signaling

Peptide sequence around phosphorylation site of serine 428 (G-I-S(p)-P-K) derived from Human ATR.