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Product Name
Anti-DDX21 Rabbit antibody
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Description
DDX21 Rabbit polyclonal antibody
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Tested applications
WB, IHC-P, ICC/IF
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Species reactivity
Human
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Alternative names
GUA; GURDB; RH-II/GU; RH-II/GuA antibody
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Isotype
Rabbit IgG
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Preparation
Antigen: A synthetic peptide of human DDX21
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Clonality
Polyclonal
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Formulation
Supplied in 50nM Tris-Glycine(pH 7.4), 0.15M Nacl, 40%Glycerol, 0.01% sodium azide and 0.05% BSA.
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Storage instructions
Store at -20°C. Stable for 12 months from date of receipt.
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Applications
WB: 1/1000
IHC: 1/20
ICC/IF: 1/100
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Validations
Western blot detection of DDX21 in Hela cell lysates using DDX21 Rabbit pAb(1:1000 diluted).Predicted band size:87kDa.Observed band size:87kDa.
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Background
Swiss-Prot Acc.Q9NR30.RNA helicase that acts as a sensor of the transcriptional status of both RNA polymerase (Pol) I and II: promotes ribosomal RNA (rRNA) processing and transcription from polymerase II (Pol II) (PubMed:25470060). Binds various RNAs, such as rRNAs, snoRNAs, 7SK and, at lower extent, mRNAs (PubMed:25470060). In the nucleolus, localizes to rDNA locus, where it directly binds rRNAs and snoRNAs, and promotes rRNA transcription, processing and modification. Required for rRNA 2'-O-methylation, possibly by promoting the recruitment of late-acting snoRNAs SNORD56 and SNORD58 with pre-ribosomal complexes (PubMed:25470060, PubMed:25477391). In the nucleoplasm, binds 7SK RNA and is recruited to the promoters of Pol II-transcribed genes: acts by facilitating the release of P-TEFb from inhibitory 7SK snRNP in a manner that is dependent on its helicase activity, thereby promoting transcription of its target genes (PubMed:25470060). Functions as cofactor for JUN-activated transcription: required for phosphorylation of JUN at 'Ser-77' (PubMed:11823437, PubMed:25260534). Can unwind double-stranded RNA (helicase) and can fold or introduce a secondary structure to a single-stranded RNA (foldase) (PubMed:9461305). Involved in rRNA processing (PubMed:14559904, PubMed:18180292). May bind to specific miRNA hairpins (PubMed:28431233).
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