Protein Molecular Weight Calculator
Calculate protein molecular weight from amino acid sequence or composition with post-translational modifications.
Protein Information
Use single letter codes: A, R, N, D, C, Q, E, G, H, I, L, K, M, F, P, S, T, W, Y, V
Alanine (A):
Arginine (R):
Asparagine (N):
Aspartic Acid (D):
Cysteine (C):
Glutamine (Q):
Glutamic Acid (E):
Glycine (G):
Histidine (H):
Isoleucine (I):
Leucine (L):
Lysine (K):
Methionine (M):
Phenylalanine (F):
Proline (P):
Serine (S):
Threonine (T):
Tryptophan (W):
Tyrosine (Y):
Valine (V):
Number of disulfide bonds
Number of phosphate groups
Number of glycan chains
Results
Enter protein information to calculate molecular weight
Amino Acid Molecular Weights
Non-polar Amino Acids
- • Alanine (A): 89.09 Da
- • Isoleucine (I): 131.17 Da
- • Leucine (L): 131.17 Da
- • Methionine (M): 149.21 Da
- • Phenylalanine (F): 165.19 Da
- • Proline (P): 115.13 Da
- • Tryptophan (W): 204.23 Da
- • Valine (V): 117.15 Da
Polar & Charged Amino Acids
- • Arginine (R): 174.20 Da
- • Asparagine (N): 132.12 Da
- • Aspartic Acid (D): 133.10 Da
- • Cysteine (C): 121.16 Da
- • Glutamine (Q): 146.15 Da
- • Glutamic Acid (E): 147.13 Da
- • Glycine (G): 75.07 Da
- • Histidine (H): 155.16 Da
- • Lysine (K): 146.19 Da
- • Serine (S): 105.09 Da
- • Threonine (T): 119.12 Da
- • Tyrosine (Y): 181.19 Da