Dicer is a member of the RNase III family containing an N-terminal DEXH-box RNA helicase/ATPase domain, followed by a domain of unknown function (DUF283), a PAZ domain, which anchors the 3′-end of the guided siRNA, two RNase III domains, and a dsRBD. The current model for dsRNA cleavage by Dicer predicts that the two ribonuclease III domains of Dicer dimerize to form the catalytic center that is responsible for cleaving long dsRNA in co-operation with two RNA binding domains, PAZ and dsRNA-binding domain.
Monoclonal Anti-DICER1 (mouse IgG1 isotype) is derived from the hybridoma DCR1 produced by the fusion of mouse myeloma cells and splenocytes from BALB/c mice immunized with a fusion protein corresponding to a fragment of human DICER1.
Application
The antibody may be used in several immunological techniques including immunoblotting and real‐time PCR.
Biochem/physiol Actions
Dicer catalyzes the first step in the RNA interference (RNAi) pathway and initiates formation of the RNA-induced silencing complex (RISC). The dsRNA is processed into small fragments called short interfering RNA (siRNA) or microRNA (miRNA) of typically 21-25 nucleotides long with a two-base overhang on the 3′ end. SiRNAs and miRNAs serve as guide to direct the RNA-induced silencing complex (RISC) to complementary RNAs to degrade them or prevent their translation. DICER1-deficient colorectal cancer cells have an enhanced ability to initiate tumors and metastasis. Dicer functions as an indirect tumor suppressor, as silencing Dicer expression makes cancer cells more malignant.
Physical form
Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.
Disclaimer
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The finding that sequence-specific gene silencing occurs in response to the presence of double-stranded RNAs has had an enormous impact on biology, uncovering an unsuspected level of regulation of gene expression. This process, known as RNA interference (RNAi) or RNA
RNA silencing pathways convert the sequence information in long RNA, typically double-stranded RNA, into approximately 21-nt RNA signaling molecules such as small interfering RNAs (siRNAs) and microRNAs (miRNAs). siRNAs and miRNAs provide specificity to protein effector complexes that repress mRNA
microRNAs (miRNAs) are aberrantly expressed in cancer. An enzyme essential for miRNA processing is Dicer, whose expression is deregulated in diverse types of cancer and correlates with tumor progression. However, whether the regulation of Dicer expression affects tongue squamous cell
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