Newmarket Scientific
Newmarket Scientific


Signal transduction - antibodies, peptides, inhibitors and SiRNA

Affinity Biosciences - The phospho-antibody specialist


Affinity Biosciences is a provider of innovative tools for signal transduction research producing well validated phospho-specific antibodies. A focus on peptide design is essential for generating specific, selective, and reproducible antibodies. Affinity Biosciences has years of experience in selecting synthetic peptide haptens or recombinant proteins to produce antibodies that target particular protein regions and isoforms with very high specificity.


Use our search to find your antibody (e.g. Ser724, IRE1 or Phospho-IRE1 etc).


Well validated phospho-specific antibodies

Validation is important for any antibody, but for Phospho-specific antibodies it is even more important as specificity is truly key to their usefulness.


Affinity Biosciences antibody validation begins with Mass Spec (MS) analysis of the blocking peptide to ensure the peptide has been produced correctly, followed by checking that the peptide blocks the antibody well in Western blotting with research samples showing that the antibody corresponds correctly to the blocking peptide.


DATASHEET IMAGES: Images of Western blots are provided on the datasheets showing blocking and control lanes (without the peptide) to show binding of the target along with images of other applications such as Immunohistochemistry, immunofluorescence etc as appropriate.


As an example, details of the validation of our Phospho-IRE1 (Ser724) - AF7150 antibody have been provided below:


Western Blot, IHC, Immunofluorescence and Peptide-ELISA for Anti Phospho-IRE1 (Ser724).



pIRE1 Immunofluorescence  pIRE1 ELISA

Phospho-IRE1 (Ser724) - AF7150 Datasheet


Affinity also produce more than 500 inhibitors and SiRNAs.


Additionally all affinity products are covered by our 100% antibody guarantee, so you can try them without worrying whether they will work. We know they work well, but we understand you may be sceptical having tried other antibodies in the past, so now you can try them without worrying.

If they don't work, we'll give you your money back.



Other Highlighted Antibodies:


Anti-Phospho-ERK1/2 Antibody (Thr202/Tyr204) - AF1015

29 Citations (See the citations that are listed on CiteAb)


Anti-Phospho-Akt Antibody (Ser473) - AF0016

28 Citations


Phospho-mTOR Antibody (Ser2448) - AF3308

14 Citations 


Phospho-p70 S6 Kinase Antibody (Thr389/412) - AF3228

9 Citations


Use our search at the top of the page to find your antibody

(e.g. Ser724, IRE1 or Phospho-IRE1 etc).


Questions? Email us at


Affinity - CiteAb antibody supplier to watch AND a 3 for 2 offer!


Affinity have been named the CiteAb "Antibody Supplier to Watch in 2020" (they also won in 2019 too!) and to prove it is true we are offering the chance to try a few Affinity antibodies with our 3 for 2 offer.


Buy any 3 antibodies and get the cheapest one free* and all antibodies are still covered by our 100% antibody guarantee.


Search for your antibodies and phospho-antibodies from the thousands on our site and try our ECL offer below.

   Affinity are Antibody Supplier to watch 2020



* Terms and conditions apply of course, but the offer is pretty much as written, so if you have questions, please ask and yes if you order 6 or 9 antibodies etc. we will arrange the antibodies to maximise your saving.