Human PSMA peptide (ab41442)

Thank you for your reply.

You are correct in thinking that the description of the "protein length" described for ab41442 refers to the full length of the PSMA protein from which the peptide is taken. The peptide is described as

"Synthetic peptide derived from within residues 1 - 100 of Human PSMA.(Note: the amino acid sequence is proprietary)This peptide was used as an immunogen for https://www.abcam.com/ab41034.html."

The protein ab117471 is in a slightly different buffer to ab41442. It is provided in a Tris buffer (pH 7.5) with 0.31% Glutathione.

I hope this information has been of help. If you could describe what you are hoping to use the protein for I can advise further as to whether either of these products, or anything else from our catalogue, might be suitable.

I look forward to receiving your reply.

Thank you for contacting us and your interest in our products.

The PSMA peptide (ab41442) is a 17 amino acid long peptide derived from within the first 100 residues of human PSMA. It was used as the immunogen to produce the anti-PSMA anditbody ab41034. Please find below the answers to your questions:

Stability and shelf life of the peptide.



We would recommend storing the peptide as directed on the datasheet of ab41442:

Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.

We do not have set expiration dates for our products. Most peptides are stable and can last for anywhere from a few months to several years if stored properly, so we strongly recommend that you follow the storage instructions on the datasheet for the product you purchase. These conditions will vary among our products, therefore, it is important to verify the storage conditions for each of our products when you receive them. We guarantee all of our products to work for at least 120 days from the date of purchase when stored correctly.


Formulations and peptide sequences if available.



The peptide ab41442 is provided at a concentration of 1 mg/ml in a HEPES buffer (pH 6.75) with EDTA, sodium chloride and Tween (0.001%)

If there are any modifications to the peptide.



The peptide has no modifications

Formulation of the elution buffer.



The buffer is as described above. If you are looking for a protein you may want to consider looking at ab117471 which is a recombinant fragment of Human PSMA (amino acids 1-150) with tag.

I hope this information has been of help. If you have any further questions, please do not hesitate to ask. Until then, I wish you all the best with your research.

Indeed, ab41442 was used as an immunogen to make one of our PSMA antibodies, ab41034. However, ab97421 has also been used as an immunogen to make another one of our PSMA antibodies, ab71720. Therefore, with regards to your question both peptides are equally capable of being able to produce antibodies against PSMA.