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By Sahil Gupta
How to estimate number of amino acid residues in protein if molecular weight is given?
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Suppose the molecular weight of the protein is X daltons. Hydrogen atom weighs 1 Da, a Carbon weighs 12, an Oxygen 16, and so on.
By this each single naturally occurring amino acid has approximately 5 to 15 C/N/O atoms and weighs from 70 – 160 Daltons. Lets assume about Y Da per amino acid. Therefore, X Da protein has about X/Y = n amino acids
According to me as we know its a tri peptide so 2peptide bond r formed and the molecural mass of tri peptoide is 150*3 thts is 450 bt 2 water mol r removed during pepetide bond formation thts y 450-36 tht is 414