Arginine

3-letter Code
Arg
1-letter Code
R
Side-Chain Polarity
  • Basic Polar
Side-Chain Class
  • Basic
Side-Chain Charge
Positive
pI
10.76
pKa (α-COOH)
1.82
pKa (α-NH3+)
8.99
pKa (Side-Chain)
12.48
Avg. Residue Mass (Da)
156.19
Monoisotopic Mass (Da)
156.10
MW (Da)
174.20
Hydropathy Index
-4.50
van der Waals Volume
148
Optical Properties
Wikipedia Entry