Detection of Human/Mouse/Rat Phospho-ATM (S1981) by Western Blot.
Western blot shows lysates of HeLa human cervical epithelial carcinoma cell line untreated (-) or treated (+) with 1 µM camptothecin (CPT) for 1 hour. PVDF membrane was probed with 1 µg/mL Rabbit Anti-Human/Mouse/Rat Phospho-ATM (S1981) Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1655) followed by HRP-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # HAF008). A specific band for Phospho-ATM (S1981) was detected at approximately 370 kDa (as indicated). The phospho-specificity of this antibody was supported by decreased labeling following treatment with 600 U lambda ‑phosphatase ( lambda -PPase) for 1 hour. This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Detection of Human Phospho-ATM (S1981) by Simple WesternTM. Simple Western lane view shows lysates of HeLa human cervical epithelial carcinoma cell line untreated (-) or treated (+) with 1 µM Camptothecin (CPT) for 1 hour, loaded at 0.2 mg/mL. A specific band was detected for Phospho-ATM (S1981) at approximately 270 kDa (as indicated) using 10 µg/mL of Rabbit Anti-Human/Mouse/Rat Phospho-ATM (S1981) Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1655). This experiment was conducted under reducing conditions and using the 66-440 kDa separation system.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
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.
The Ataxia telangiectasia-mutated (ATM) protein kinase exists as a dimer in the cell nucleus. Changes in DNA structure induced by genotoxic stress lead to activation of ATM and phosphorylation of S1981 in trans. Once S1981 is phosphorylated, the dimer dissociates and active ATM monomers signal to downstream targets.
Entrez Gene IDs:
472 (Human); 11920 (Mouse)
AT mutated; A-T mutated; AT1; ATA; ataxia telangiectasia mutated (includes complementation groups A, C and D); ataxia telangiectasia mutatedATD; ATC; ATDC; ATE; DKFZp781A0353; EC 184.108.40.206; MGC74674; serine-protein kinase ATM; TEL1; TEL1, telomere maintenance 1, homolog; TELO1; TPLL
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