Q: I am looking for an antibody of STEAP2 and find that there are 3 different STEAP2 antisera on the product list. But the information of antigen is not very clear for these products. Because STEAP2 has several isoforms, I wonder if you can clarify which isoform can be detected by each antibody. I will appreciate it if you can tell me the peptide sequence of each antigen.

A: We have four STEAP2 antibodies and typically if the immunogen is not provided on the datasheet than it is deemed proprietary by the lab and cannot be provided. For catalog number NBP1-83100 however the immunogen is EYLASLFPDSLIVKGFNVVSAWALQLGPKD ASRQVYICSNNIQARQQVIELARQLNFIPI DLGSLSSAREIE For the other products I would have to get in touch with the lab to see if it could detect isoform 1 or 2. I can also inquire if they can provide a range it targets in if that would be useful. Typically though if it is indicated as C-terminal it will be within the last 50 amino acids. Was there a particular species or isoform you were interested in?

Q: NBP1-83100 reacts with all the isoforms. I want one that specific reacts with a 454-aa isoform (NP_001231874). Could you check whether you have this kind of product?

A: I had the lab take a look at all 4 antibodies we have against this target and unfortunately it looks like all of them either will recognize both the 454 aa isoform as well as the 490 amino acid isoform, or only recognize the 490 amino acid isoform and we do not have one that is specific for one or the other. I am sorry that I do not have better news to report. You will probably need to find an antibody that targets between 440 and 454 of the isoform of interest for it to have no cross reaction as that is the region that is not conserved.

STEAP2 Antibody [PE]

Novus Biologicals | Catalog # NBP1-76823PE

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Key Product Details

Species Reactivity

Human, Mouse

Applications

Immunohistochemistry, Immunohistochemistry-Paraffin, Western Blot, ELISA, Immunocytochemistry/ Immunofluorescence

Label

PE (Excitation = 488 nm, Emission = 575 nm)

Antibody Source

Polyclonal Rabbit IgG

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Product Specifications

Immunogen

Antibody was raised against a 16 amino acid synthetic peptide from near the carboxy terminus of human STEAP2. The immunogen is located within the last 50 amino acids of STEAP2. Amino Acid Squence: KLKRIKKGWEKSQFLE

Specificity

This STEAP2 antibody does not cross-react with other STEAP proteins.

Clonality

Polyclonal

Host

Rabbit

Isotype

IgG