Calcolatore Beer-Lambert Proteine — Formula
## Protein Molecular Weight Estimation
The molecular weight of a protein can be estimated from the number of amino acid residues using the average residue weight.
### Formula
**MW = N × 110 + 18**
where N is the number of residues and 110 Da is the average amino acid residue weight (after peptide bond formation removes water). The +18 accounts for the water molecule completing the N-terminus and C-terminus. The actual average residue weight is 111.1 Da for a typical protein composition.
The molecular weight of a protein can be estimated from the number of amino acid residues using the average residue weight.
### Formula
**MW = N × 110 + 18**
where N is the number of residues and 110 Da is the average amino acid residue weight (after peptide bond formation removes water). The +18 accounts for the water molecule completing the N-terminus and C-terminus. The actual average residue weight is 111.1 Da for a typical protein composition.
Esempio Risolto
A protein with 300 amino acid residues.
- MW = 300 × 110 + 18 = 33,018 Da
- MW = 33.0 kDa