Positional Peptide Library Construction

Scientists at Alpha Lifetech Inc. continuously strive to produce high-quality random peptide libraries and related services to solve problems in scientific discovery.


Positional Peptide Library


Positional Peptide Library is an important tool for peptide sequence optimization. Amino acids of interest at a given position(s) are substituted with all other natural amino acids, one at a time. This allows the identification of amino acids that enhance peptide activity. (Num. 01: Original Sequence; Num. 02 - 03: Single Point Mutation; Num. 04, 05: Combinatorial 2-Positional Mutation; Num. 06, 07: Combinatorial 3-Positional Mutation)



Service Specification


-- Purity: Crude, Desalt, >70%, >75%, 80%, 85%, 90% and 95%

-- Length: 5-25 amino acids

-- Quantity: 1-20 mg for crude and desalt, 1-15 mg for purified library

-- Deliverable format: Lyophilized peptides in 96-well plate or tube rack (No cross-contamination)

-- Documentation: HPLC, MS, Certificate of Analysis for each peptide


Alpha Lifetech Inc. also offers various modifications, please feel free to contact us or find more info from Custom Peptide Synthesis & Modification Services.