Cell Biology Peptides & Proteins

Sigma offers hundreds of peptides & proteins to fit your research needs, ranging from neuropeptides and hormones, to cytokines, growth factors, and kinases. View our learning center for cell biology peptide & protein application data and posters, or browse our Tool Box for cellular pathway information.

Sigma can help streamline your workflow through our integrated product solutions, from our new Prestige Antibodies™ that are the most highly characterized in the industry, or our comprehensive listing of small molecules, to our tried-and-true Cell Biology reagents.

Sigma Peptides & Proteins offer high purity, activity and specificity to meet the demands of your research. Think Sigma when you need innovative life science products all from one company.
We want to be your one-stop shop.

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