ATR Antibody (Phospho-Ser428)

Polyclonal Antibody

Root Catalog/Products/Polyclonal Antibodies, Root Catalog/Products/Polyclonal Antibodies/Phospho Specific, Root Catalog/Products/Primary Antibodies

301 kDa

ATR

Liquid. PBS (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl.

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.

Serine/threonine-protein kinase ATR

The antibody was purified from rabbit antiserum by affinity-chromatography using phospho peptide. The antibody against non-phospho peptide was removed by chromatography using corresponding non-phospho peptide.

ATR (Phospho-Ser428) antibody detects endogenous levels of ATR only when phosphorylated at Ser428.