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 Precisio™ Kinases, supplied with optimized assay protocols, to our comprehensive portfolio of small molecules, antibodies, and 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.

Products: Proteins Peptides Precisio™ Kinases  Tool Box: Receptor eHandbook Pathway Slides Your Favorite Gene Enzyme Explorer Special Offers: Printed Catalog

Learning Center: Technical Resources Library High Throughput Screening of Peptide Substrates for Tyrosine Kinases (328 KB PDF) Neurodegenerative Diseases Brochure Neuropsychiatric Disorders Brochure Improved Ex Vivo Expansion of Functional CD34+ Cells Using Stemline™ II Hematopoietic Stem Cell Expansion Medium (217 KB PDF)     Related Topics: Antibodies Core Bioreagents Cell Culture Functional Genomics & RNAi Labware Proteomics Grant Collaborations