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HPA005516 Sigma-Aldrich

Anti-DDX20 antibody produced in rabbit

Antibody Enhanced Validation

Prestige Antibodies® Powered by Atlas Antibodies, affinity isolated antibody, buffered aqueous glycerol solution

Synonym: Anti-Component of gems 3, Anti-DEAD box protein 20, Anti-DEAD box protein DP 103, Anti-Gemin-3, Anti-Probable ATP-dependent RNA helicase DDX20



Related Categories Alphabetical Index, Antibodies, Antibodies for Cell Biology, Antibodies for Epigenetics and Nuclear Signaling, Antibodies for Gene Regulation and Expression,
conjugate   unconjugated
clone   polyclonal
biological source   rabbit
application(s)   immunoblotting: 0.4 μg/mL
  immunohistochemistry: 1:20- 1:50
species reactivity   human
enhanced validation   orthogonal RNAseq
Learn more about Antibody Enhanced Validation
form   buffered aqueous glycerol solution
shipped in   wet ice
storage temp.   −20°C
antibody form   affinity isolated antibody
antibody product type   primary antibodies
grade   Prestige Antibodies® Powered by Atlas Antibodies
UniProt accession no.   Q9UHI6
Gene Information   human ... DDX20(11218)


General description

DDX20 (DEAD (Asp-Glu-Ala-Asp) box polypeptide 20) belongs to DExD/H-box family of proteins. This family is characterized by Asp-Glu-Ala-Asp/His motif present in their helicase domain. DDX20 is made of 824 amino acids. It is an RNA helicase and forms a part of the SMN (survival-of-motor-neurons) complex. The molecular weight of this protein is 103kDa. DDX20 has a hydrophobic N-terminal, and two hydrophilic regions in its C-terminal. In humans, its expression varies in accordance with the type of tissue, and shows a high level of expression in testis. During spermatogenesis in humans, DDX20 is localized to the chromtoid body structure in germ cells. This gene is located at human chromosome 1p21.1-p13.2.


Probable ATP-dependent RNA helicase DDX20 recombinant protein epitope signature tag (PrEST)


Anti-DDX20 antibody produced in rabbit, a Prestige Antibody, is developed and validated by the Human Protein Atlas (HPA) project (www.proteinatlas.org). Each antibody is tested by immunohistochemistry against hundreds of normal and disease tissues. These images can be viewed on the Human Protein Atlas (HPA) site by clicking on the Image Gallery link. The antibodies are also tested using immunofluorescence and western blotting. To view these protocols and other useful information about Prestige Antibodies and the HPA, visit sigma.com/prestige.

Physical form

Solution in phosphate-buffered saline, pH 7.2, containing 40% glycerol and 0.02% sodium azide


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Legal Information

Prestige Antibodies is a registered trademark of Sigma-Aldrich Co. LLC


Corresponding Antigen APREST86419.

Biochem/physiol Actions

DDX20 (DEAD (Asp-Glu-Ala-Asp) box polypeptide 20) plays an essential role in early embryonic development, where it is involved in silencing of maternal transcripts and processing of RNA. It forms a core part of SMN (survival of motor neurons) complex, which is involved in the processing and assembly of RNPs (ribonucleoproteins), such as, snRNPs (spliceosomes), snoRNPs, miRNPs, hnRNPs and transcriptosomes. DDX20 plays a part in hind brain development where it suppresses the transcription of Egr2 (early growth response 2) gene. It regulates macrophage differentiation and proliferation, by silencing the expression of Ets target genes, involved in Ras pathway. It also acts as a cofactor in the SUMOylation of SF-1 (Steroidogenic factor 1) by PIASy (Protein inhibitor of activated STAT Y). This protein facilitates the assembly of the core of SMN complex, and this activity of DDX20 is associated with Spinal muscular atrophy (SMA). DDX20 acts as an oncogene that facilitates metastasis, in human breast cancer, and has potential as a therapeutic target for the same.

Safety & Documentation
Protocols & Articles


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy


Prestige Antibody® Immunofluorescence Procedure

Prestige Antibodies® have been used for subcellular localization studies by immunocytochemistry (ICC) - immunofluorescence (IF) using the protocol described below. In addition to the primary antibodi...
Keywords: Immunocytochemistry, Immunofluorescence, Immunostaining, Sample preparations

Prestige Antibody® Immunohistochemistry Procedure

Prestige Antibodies® developed for immunohistochemistry based expression profiling are recommended to be used according to the standard IHC staining protocol described below.
Keywords: Buffers, Dehydration reaction, Gene expression, Hydration reaction, Immunohistochemistry, Immunostaining, Tissue microarrays

Prestige Antibody® Protein Immunoblotting Procedure

Prestige Antibodies® recommended for Western Blot are recommended to be used according to the standard WB protocol described below. Western blot standard protocol optimized for
Keywords: Catalytic combustion detector, Electrophoresis, Gene expression, Sample preparations, Western blot

Prestige Antigens™-Blocking Protocol

Prestige Antigens and the corresponding Prestige Antibodies are recommended to be used according to the standard blocking protocol described below.
Keywords: Immunocytochemistry, Immunohistochemistry, Immunostaining, Titrations, Western blot

Western Blot Protocol | Immunoblotting Protocol

Western Blotting refers to the electrophoretic transfer of proteins from sodium dodecyl sulfate polyacrylamide gels to sheets of PVDF or nitrocellullose membrane, followed by immunodetection of prote...
Keywords: AGE, Buffers, Cell disruption, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

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