Description
Product Usage Information
Western Blotting: 1:1000
Storage
Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/mL BSA, and 50% glycerol. Store at -20°C. Do not aliquot the antibody.
Protocol
Available protocols: Western Blotting
Specificity / Sensitivity
ADAR1 p150 Isoform Antibody recognizes endogenous levels of total ADAR1 p150 protein. This antibody does not detect ADAR1 p110 protein, but may detect a nonspecific band around 120 kDa.
Species Reactivity: Human
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Leu227 of human ADAR1 protein. Antibodies are purified by peptide affinity chromatography.
Background
Post-transcriptional processing of RNAs, such as RNA editing, is an important mechanism by which diversity in RNA and protein is achieved that is not otherwise encoded by the genome (1,2). The most common form of RNA editing is the conversion of adenosine (A) into inosine (I) on double-stranded RNA by the adenosine deaminase acting on RNA (ADAR) family of proteins (1-3). Since inosine base pairs with cytidine, it is interpreted as a guanosine by the splicing and translational machinery, leading to alteration in the protein sequence, as well as generation of splicing isoforms (1,4-6). A-to-I editing can also influence RNA sequence recognition by RNA-binding proteins and non-coding RNA, such as miRNAs, affecting subsequent RNA processing, stability, and protein expression levels (2). ADAR1 is ubiquitously expressed with two known isoforms, ADAR1L (p150) and ADAR1S (p110), resulting from transcription using alternative promoters and start codons. ADAR1S is constitutively expressed in the nucleus, while ADAR1L is interferon-inducible and present in both the nucleus and the cytoplasm. The induction of ADAR1L in response to cellular stress and viral infection suggests a role for RNA editing in the innate immune response (1,7). In addition, ADAR1 is essential in mammalian development, particularly in hematopoiesis and suppression of interferon signaling to protect hematopoietic stem cells from destruction in fetal liver and adult bone marrow (8,9).
Alternate Names
136 kDa double-stranded RNA binding protein; 136 kDa double-stranded RNA-binding protein; ADAR; ADAR1; adenosine deaminase acting on RNA 1-A; adenosine deaminase RNA specific; adenosine deaminase, RNA-specific; AGS6; Double-stranded RNA-specific adenosine deaminase; DRADA; DSH; DSRAD; dsRNA adenosine deaminase; dsRNA adeonosine deaminase; G1P1; IFI-4; IFI4; interferon-induced protein 4; Interferon-inducible protein 4; K88DSRBP; p136
