Anti-Phospho-DiGeorge Syndrome Critical Region 8 DGCR8 (Ser377) Antibody

The Drosha-DGCR8 microprocessor complex is required for microRNA (miRNA) biogenesis. DGCR8 (DiGeorge Syndrome Critical Region 8) recognizes the RNA substrate, whereas Drosha functions as the endonuclease. DGCR8, which contains two double-stranded RNA (dsRNA) -binding domains, interacts with the pri-miRNA and functions as the molecular anchor that measures the distance from the ds-RNA-ssRNA junction and directs Drosha cleavage 11bp away (Han, J., et al, 2006) . The efficiency of Drosha cleavage increases in the presence of heme and promotes the formation of highly ordered DGCR8 structures upon binding to RNA (Faller, M., et al, 2010) .

DGCRK6 antibody, C22orf12 antibody, D16H22S788E antibody, D16Wis2 antibody, DGCR 8 antibody, Dgcr8 antibody, DGCR8 microprocessor complex subunit antibody, DGCR8_HUMAN antibody, DGCRK 6 antibody, DiGeorge syndrome critical region 8 antibody, DiGeorge syndrome critical region gene 8 antibody, Gy1 antibody, Microprocessor complex subunit DGCR8 antibody, pasha antibody

Synthetic phospho-peptide corresponding to amino acid residues surrounding Ser377 of human DGCR8, conjugated to keyhole limpet hemocyanin (KLH) . Immunogen species is Human.

Component of the microprocessor complex that acts as a RNA- and heme-binding protein that is involved in the initial step of microRNA (miRNA) biogenesis. Component of the microprocessor complex that is required to process primary miRNA transcripts (pri-miRNAs) to release precursor miRNA (pre-miRNA) in the nucleus. Within the microprocessor complex, DGCR8 function as a molecular anchor necessary for the recognition of pri-miRNA at dsRNA-ssRNA junction and directs DROSHA to cleave 11 bp away form the junction to release hairpin-shaped pre-miRNAs that are subsequently cut by the cytoplasmic DICER to generate mature miRNAs. The heme-bound DGCR8 dimer binds pri-miRNAs as a cooperative trimer (of dimers) and is active in triggering pri- miRNA cleavage, whereas the heme-free DGCR8 monomer binds pri- miRNAs as a dimer and is much less active. Both double-stranded and single-stranded regions of a pri-miRNA are required for its binding (PubMed:15531877, PubMed:15574589, PubMed:15589161, PubMed:16751099, PubMed:16906129, PubMed:16963499, PubMed:17159994) . Specifically recognizes and binds N6- methyladenosine (m6A) -containing pri-miRNAs, a modification required for pri-miRNAs processing (PubMed:25799998) . Involved in the silencing of embryonic stem cells self-renewal (By similarity) .

Storage at -20°C is recommended, as aliquots may be taken without freeze/thawing due to presence of 50% glycerol. Stable for at least 1 year at -20°C. After date of receipt, stable for at least 1 year at -20°C.

Specific for endogenous levels of the ~120 kDa DGCR8 protein phosphorylated at Ser377. Immunolabeling is blocked by preadsorption with the phosphopeptide used as antigen, but not by the corresponding non-phosphopeptide.

Nucleus. Nucleus, nucleolus. Colocalizes with nucleolin and DROSHA in the nucleolus. Mostly detected in the nucleolus as electron-dense granular patches around the fibrillar center (FC) and granular component (GC) . Also detected in the nucleoplasm as small foci adjacent to splicing speckles near the chromatin structure. Localized with DROSHA in GW bodies (GWBs), also known as P-bodies (PubMed:17159994) .