Anti-DDX21 Antibody Picoband™

Product Name

Anti-DDX21 Antibody Picoband™

View all DDX21 Antibodies

SKU/Catalog Number

A04605-2

Size

100 μg/vial

Form

Lyophilized

Description

Boster Bio Anti-DDX21 Antibody Picoband™ catalog # A04605-2. Tested in ELISA, Flow Cytometry, IF, ICC, WB applications. This antibody reacts with Human.

Storage & Handling

At -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freezing and thawing.

Cite This Product

Anti-DDX21 Antibody Picoband™ (Boster Biological Technology, Pleasanton CA, USA, Catalog # A04605-2)

Host

Rabbit

Contents

Each vial contains 4 mg Trehalose, 0.9 mg NaCl, 0.2 mg Na2HPO4.

Clonality

Polyclonal

Isotype

Rabbit IgG

Immunogen

E.coli-derived human DDX21 recombinant protein (Position: E395-Q660).

*Blocking peptide can be purchased. Costs vary based on immunogen length. Contact us for pricing.

Cross-reactivity

No cross-reactivity with other proteins.

Reactive Species

A04605-2 is reactive to DDX21 in Human

Applications

A04605-2 is guaranteed for ELISA, Flow Cytometry, IF, ICC, WB Boster Guarantee

Observed Molecular Weight

86 kDa

Calculated molecular weight

87.344kDa

Background of DDX21

Nucleolar RNA helicase 2 is an enzyme that in humans is encoded by the DDX21 gene. DEAD box proteins, characterized by the conserved motif Asp-Glu-Ala-Asp (DEAD), are putative RNA helicases. They are implicated in a number of cellular processes involving alteration of RNA secondary structure such as translation initiation, nuclear and mitochondrial splicing, and ribosome and spliceosome assembly. Based on their distribution patterns, some members of this family are believed to be involved in embryogenesis, spermatogenesis, and cellular growth and division. This gene encodes a DEAD box protein, which is an antigen recognized by autoimmune antibodies from a patient with watermelon stomach disease. This protein unwinds double-stranded RNA, folds single-stranded RNA, and may play important roles in ribosomal RNA biogenesis, RNA editing, RNA transport, and general transcription.

Antibody Validation

Boster validates all antibodies on WB, IHC, ICC, Immunofluorescence, and ELISA with known positive control and negative samples to ensure specificity and high affinity, including thorough antibody incubations.

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Reconsitution

Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.

Assay Dilutions Recommendation

The recommendations below provide a starting point for assay optimization. The actual working concentration varies and should be decided by the user.

Western blot, 0.25-0.5 μg/ml, Human
Immunocytochemistry/Immunofluorescence, 5 μg/ml, Human
Flow Cytometry, 1-3 μg/1x10⁶ cells, Human
Direct ELISA, 0.1-0.5 μg/ml, Human

Validation Images & Assay Conditions

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Figure 1. Western blot analysis of DDX21 using anti-DDX21 antibody (A04605-2).
Electrophoresis was performed on a 5-20% SDS-PAGE gel at 70V (Stacking gel) / 90V (Resolving gel) for 2-3 hours. The sample well of each lane was loaded with 30 ug of sample under reducing conditions.
Lane 1: human Jurkat whole cell lysates,
Lane 2: human HEK293 whole cell lysates.
After electrophoresis, proteins were transferred to a nitrocellulose membrane at 150 mA for 50-90 minutes. Blocked the membrane with 5% non-fat milk/TBS for 1.5 hour at RT. The membrane was incubated with rabbit anti-DDX21 antigen affinity purified polyclonal antibody (Catalog # A04605-2) at 0.5 μg/mL overnight at 4°C, then washed with TBS-0.1%Tween 3 times with 5 minutes each and probed with a goat anti-rabbit IgG-HRP secondary antibody at a dilution of 1:5000 for 1.5 hour at RT. The signal is developed using an Enhanced Chemiluminescent detection (ECL) kit (Catalog # EK1002) with Tanon 5200 system. A specific band was detected for DDX21 at approximately 86 kDa. The expected band size for DDX21 is at 86 kDa.

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Figure 2. IF analysis of DDX21 using anti-DDX21 antibody (A04605-2).
DDX21 was detected in an immunocytochemical section of Caco-2 cells. Enzyme antigen retrieval was performed using IHC enzyme antigen retrieval reagent (AR0022) for 15 mins. The cells were blocked with 10% goat serum. And then incubated with 5 μg/mL rabbit anti-DDX21 Antibody (A04605-2) overnight at 4°C. DyLight®488 Conjugated Goat Anti-Rabbit IgG (BA1127) was used as secondary antibody at 1:100 dilution and incubated for 30 minutes at 37°C. The section was counterstained with DAPI. Visualize using a fluorescence microscope and filter sets appropriate for the label used.

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Figure 3. Flow Cytometry analysis of A431 cells using anti-DDX21 antibody (A04605-2).
Overlay histogram showing A431 cells stained with A04605-2 (Blue line). The cells were blocked with 10% normal goat serum. And then incubated with rabbit anti-DDX21 Antibody (A04605-2, 1 μg/1x10⁶ cells) for 30 min at 20°C. DyLight®488 conjugated goat anti-rabbit IgG (BA1127, 5-10 μg/1x10⁶ cells) was used as secondary antibody for 30 minutes at 20°C. Isotype control antibody (Green line) was rabbit IgG (1 μg/1x10⁶) used under the same conditions. Unlabelled sample (Red line) was also used as a control.

Gene/Protein Information For DDX21 (Source: Uniprot.org, NCBI)

Alternative Names

DEAD (Asp-Glu-Ala-Asp) box polypeptide 21; DEAD box protein 21; DEAD/H (Asp-Glu-Ala-Asp/His) box polypeptide 21; DKFZp686F21172; EC 3.6.1; EC 3.6.4.13; Gu protein; GUA; gu-alpha; GURDB; nucleolar RNA helicase 2; Nucleolar RNA helicase Gu; Nucleolar RNA helicase II; RH II/Gu; RH-II/GU; RH-II/GuA; RNA helicase II/Gu alpha DDX21 GUA, GURDB, RH-II/GU, RH-II/GuA DExD-box helicase 21 nucleolar RNA helicase 2|DEAD (Asp-Glu-Ala-Asp) box helicase 21|DEAD (Asp-Glu-Ala-Asp) box polypeptide 21|DEAD box protein 21|DEAD-box helicase 21|DEAD/H (Asp-Glu-Ala-Asp/His) box polypeptide 21|Gu protein|RH II/Gu|RNA helicase II/Gu alpha|gu-alpha|nucleolar RNA helicase Gu|nucleolar RNA helicase II

For more info on DDX21, check out the DDX21 Infographic

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In this infographic, you will see the following information for DDX21: database IDs, superfamily, protein function, synonyms, molecular weight, chromosomal locations, tissues of expression, subcellular locations, post-translational modifications, and related diseases, research areas & pathways. If you want to see more information included, or would like to contribute to it and be acknowledged, please contact [email protected].

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