Anti-SEC23B antibody produced in rabbit

The gene encoding protein transport protein Sec23 homolog B (SEC23B) is about 54kb long and located on the chromosome 20p11.23. It is composed of five domains: zinc finger domain, trunk domain, β-sheet domain, helical domain and gelsolin domain.

Protein transport protein Sec23B recombinant protein epitope signature tag (PrEST)

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The Human Protein Atlas project can be subdivided into three efforts: Human Tissue Atlas, Cancer Atlas, and Human Cell Atlas. The antibodies that have been generated in support of the Tissue and Cancer Atlas projects have been tested by immunohistochemistry against hundreds of normal and disease tissues and through the recent efforts of the Human Cell Atlas project, many have been characterized by immunofluorescence to map the human proteome not only at the tissue level but now at the subcellular level. These images and the collection of this vast data set can be viewed on the Human Protein Atlas (HPA) site by clicking on the Image Gallery link. We also provide Prestige Antibodies^® protocols and other useful information.

Protein transport protein Sec23 homolog B (SEC23B) is part of the coat protein complex II (COPII) which is required by proteins to be transported out of the endoplasmic reticulum (ER). It is a secretion-associated RAS-related protein 1 (SAR1) GTPase-activating protein and also plays a role in cargo recognition. Conversion of SAR1-GTP to SAR1-GDP causes its dissociation from the COPII coat. SAR1-bound SEC23B interacts with the C terminus of SEC31, creating a link between the outer-coat SEC13–SEC31 complex and the inner-coat SAR1–SEC23B–SEC24 complex. When it interacts with the outer coat, the GAP activity is stimulated and this accelerates the GTP hydrolysis of SAR1. SAR1 gets released and SEC23B interacts with the trappin protein transglutaminase (TRAPPI) complex subunits like dynactin which are all involved in vesicle tethering, fusion and transportation along microtubules. Finally, SEC23 is phosphorylated and this leads to the fusion of COPII vesicles with the target membrane.

Prestige Antibodies^® are highly characterized and extensively validated antibodies with the added benefit of all available characterization data for each target being accessible via the Human Protein Atlas portal linked just below the product name at the top of this page. The uniqueness and low cross-reactivity of the Prestige Antibodies^® to other proteins are due to a thorough selection of antigen regions, affinity purification, and stringent selection. Prestige antigen controls are available for every corresponding Prestige Antibody and can be found in the linkage section.

Every Prestige Antibody is tested in the following ways:

• IHC tissue array of 44 normal human tissues and 20 of the most common cancer type tissues.
• Protein array of 364 human recombinant protein fragments.

Corresponding Antigen APREST86883

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

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