Peptide YY (PYY) also known as peptide tyrosine tyrosine or pancreatic peptide YY3-36 is a peptide that in humans is encoded by the PYY gene.Peptide YY is a short (36-amino acid) peptide released by cells in the ileum and colon in response to feeding. In the blood, gut, and other elements of periphery, PYY acts to reduce appetite; but when injected directly into the central nervous system, PYY is anorexigenic, i.e., it decreases appetite.Peptide YY can be produced as the result of enzymatic breakdown of crude fish proteins and ingested as a food product.

The antibody is stable for at least 1 year from the date of receipt when stored at -20^°C to -70^°C. Reconstituted antibody can also be aliquotted and stored at 4^°C for 1 month or at -20^°C to -70^°C in a manual defrost freezer for many months without detectable loss activity. Please avoid freeze-thaw cycles.