C4orf21 Rabbit Polyclonal Antibody

MSDS

Key features and details

Rabbit polyclonal antibody to C4orf21

Target: C4orf21
Source/Host: Rabbit
Reactivity: Human, Mouse
Clonality: Polyclonal
Applications: WB, IHC, IF/ICC
Conjugation: Unconjugated
Storage: at-20°C

Brand:

CAT.NO. : APA17648

US$ Please choose

Size:

50μL 100μL

Trail, Bulk size or Custom requests Please contact us

Product Details

Background

5'-3' DNA helicase which is recruited to sites of DNA damage and promotes repair of replication-blocking DNA lesions through stimulation of homologous recombination (HR) . Promotes HR by directly stimulating RAD51-mediated strand exchange activity . Not required to load RAD51 at sites of DNA damage but promotes recombinational repair after RAD51 recruitment . Also promotes HR by positively regulating EXO1-mediated DNA end resection of double-strand breaks . Required for recruitment of replication protein RPA2 to DNA damage sites . Promotes the initiation of the G2/M checkpoint but not its maintenance . Catalyzes Holliday junction branch migration and dissociation of D-loops and DNA flaps .

Application

To ensure optimal assay performance, AREX recommends conducting reagent titration tailored to each testing system for optimal detection results.

WB	1:500 - 1:1000
IHC	1:50 - 1:200
IF/ICC	1:10 - 1:50

*Results are sample-specific. Please refer to your local assay conditions and test parameters for reference.

Overview

Description	Rabbit polyclonal antibody to C4orf21
Specificity	Recognizes endogenous levels of C4orf21 protein.
Antibody Type	Primary antibody
Imnunogen	KLH-conjugated synthetic peptide encompassing a sequence within the N-terminal region of human C4orf21. The exact sequence is proprietary.
Purification	The antibody was purified by immunogen affinity chromatography.
Molecular Weight	Predicted: 236 kD; Observed: 100 kD
Form/Buffer	Liquid in 0.42% Potassium phosphate, 0.87% Sodium chloride, pH 7.3, 30% glycerol, and 0.01% sodium azide.
Alternative Names	Uncharacterized protein C4orf21
Gene Symbol	C4orf21
Entrez Gene	55345(Human); 71643(Mouse)
SwissProt	Q86YA3(Human); Q0VGT4(Mouse)

*AREX continuously optimizes our products. Webpage content may not reflect the latest updates. For inquiries, please contact info@arexbio.com or your local distributor.
*Clone Number, Reactivity, Source/Host and Clonality can be found in the product name and Key Features section above.

Data

Western blot analysis of C4orf21 expression in K562 (A) whole cell lysates. (Predicted band size: 236 kD; Observed band size: 100 kD)

Immunohistochemical analysis of C4orf21 staining in human bladder carcinoma formalin fixed paraffin embedded tissue section. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH 6.0). The section was then incubated with the antibody at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

Immunofluorescent analysis of Anti-C4orf21 staining in 293 cells. Formalin-fixed cells were permeabilized with 0.1% Triton X-100 in TBS for 5-10 minutes and blocked with 3% BSA-PBS for 30 minutes at room temperature. Cells were probed with the primary antibody in 3% BSA-PBS and incubated overnight at 4 °C in a hidified chamber. Cells were washed with PBST and incubated with a AREX® Fluor 488 -conjugated secondary antibody (green) in PBS at room temperature in the dark. DAPI was used to stain the cell nuclei (blue).

Storage

Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles.

Note

For Research Use Only. Not for use in diagnostic procedures.

FAQs

What are the main types of research antibodies and how do they differ?

Research antibodies are mainly divided into monoclonal antibodies and polyclonal antibodies. Monoclonal antibodies typically offer higher specificity and better batch-to-batch consistency, while polyclonal antibodies often provide stronger affinity but may show more variation between batches. The choice depends on your specific experimental needs.

How can I tell if a research antibody is suitable for my experiment?

It is recommended to carefully review the product datasheet for validated applications, species reactivity, recommended dilutions, and published references. For new antibodies, performing a small-scale validation with positive control samples is usually helpful.

Can improper storage of research antibodies affect experimental results?

Yes. Antibodies are sensitive to temperature, repeated freeze-thaw cycles, and contamination. Improper storage may lead to reduced activity, increased background, or weaker signals. It is best to follow the storage instructions provided in the product datasheet.

Why doesn’t the recommended dilution in the datasheet work well in my experiment?

The recommended dilution is based on the supplier’s test conditions. Factors such as sample type, fixation method, and detection system in your lab can influence the optimal working concentration. Performing a dilution series optimization in your own system is often necessary.

What precautions should I take when using a newly purchased research antibody for the first time?

It is advisable to briefly centrifuge the antibody (especially concentrated or lyophilized ones), then perform a small-scale pilot experiment using the recommended conditions. Recording the batch number and usage date is also helpful for future tracking.

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