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By Sahil Gupta
How to calculate molecular mass of tripeptide if molecular mass of amino acid residue is 150?
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Molecular mass of tripeptide will be 3*150 – 2*18 =414 g /mol
Because 1 molecule of water is lost by the formation of a peptide bond, and there are 2 peptide bonds between the three amino acid residues, which can also be explained by the formula
MW(AAA) = 3*(MW(A)) – 2*(MW(H2O)