Calculate the molecular weight of a protein from its amino acid sequence or number of amino acids.
Protein molecular weight is fundamental in biochemistry for techniques like SDS-PAGE, mass spectrometry, and calculating molar concentrations. This calculator provides a quick estimate based on amino acid count.
Each amino acid has an average molecular weight of about 128 daltons. When amino acids join to form a protein, one water molecule (18 Da) is lost per bond. MW ≈ (number × 128) - (number - 1) × 18.