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Product Name
DDX21 Rabbit mAb
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Gene ID
9188
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SwissProt ID
Q9NR30
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Gene Name
DDX21
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Alternative Names
GUA; GURDB; RH-II/GU; RH-II/GuA
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Background
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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Research Field
Epigenetics and Nuclear Signaling
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Product Categories
Primary antibody
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Host
Rabbit
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Reactivity
Human
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Application
WB,ICC/IF
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Dilution Ratio
WB: 1/500-1/1000 IF: 1/50-1/200
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Molecular Weight
Calculated MW: 87 kDa; Observed MW: 87 kDa
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Clonality
Monoclonal Antibody
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Clonality No.
R04-4J2
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Isotype
IgG
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Immunogen
A synthetic peptide of human DDX21
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Purification
Affinity Purified
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Conjugation
Unconjugated
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Modification
Unmodified
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Form
Liquid
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Buffer System
50mM Tris-Glycine(pH 7.4), 0.15M NaCl, 40% Glycerol, 0.01% Sodium azide and 0.05% BSA
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Storage
Store at 4°C short term. Aliquot and store at -20°C long term. Avoid freeze/thaw cycles.