VAP-A Rabbit Polyclonal Antibody

MSDS

Key features and details

Rabbit polyclonal antibody to VAP-A

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

Brand:

CAT.NO. : APA17277

US$ Please choose

Size:

50μL 100μL

Trail, Bulk size or Custom requests Please contact us

Product Details

Background

Endoplasmic reticulum (ER)-anchored protein that mediates the formation of contact sites between the ER and endosomes via interaction with FFAT motif-containing proteins such as STARD3 or WDR44 -anchored protein that mediates the formation of contact sites between the ER and endosomes via interaction with FFAT motif-containing proteins such as STARD3 or WDR44 . STARD3-VAPA interaction enables cholesterol transfer from the ER to endosomes . Via interaction with WDR44 participates in neosynthesized protein export . In addition, recruited to the plasma membrane through OSBPL3 binding . The OSBPL3-VAPA complex stimulates RRAS signaling which in turn attenuates integrin beta-1 (ITGB1) activation at the cell surface . With OSBPL3, may regulate ER morphology .

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
IF/ICC	1:50 - 1:200

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

Overview

Description	Rabbit polyclonal antibody to VAP-A
Specificity	Recognizes endogenous levels of VAP-A protein
Antibody Type	Primary antibody
Imnunogen	Recombinant fusion protein of human VAP-A. The exact sequence is proprietary.
Purification	The antibody was purified by immunogen affinity chromatography.
Molecular Weight	Predicted: 27; Observed: 28 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	VAP33; Vesicle-associated membrane protein-associated protein A; VAMP-A; VAMP-associated protein A; VAP-A; 33 kDa VAMP-associated protein; VAP-33
Gene Symbol	VAPA
Entrez Gene	9218(Human); 30960(Mouse); 58857(Rat)
SwissProt	Q9P0L0(Human); Q9WV55(Mouse); Q9Z270(Rat)

*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 VAP-A expression in B cell (A), mouse heart (B), mouse pancreas (C) whole cell lysates. (Predicted band size: 27; 32 kD; Observed band size: 28 kD)

Immunofluorescent analysis of VAP-A staining in MOVAS 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. Phalloidin - AREX® Fluor 594 was used to stain Actin filaments (red). 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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