Cysteine | Nectagen

Cysteine

Codes

3-letter Code	Cys
1-letter Code	C

Classifications

Side-Chain Polarity	Nonpolar
Side-Chain Class	Sulfur-containing
Side-Chain Charge	Neutral

pI/pK's

pI	5.05
pKa (α-COOH)	1.92
pKa (α-NH3+)	10.70
pKa (Side-Chain)	8.18

Masses

Avg. Residue Mass (Da)	103.14
Monoisotopic Mass (Da)	103.01
MW (Da)	121.15

Other Properties

Hydropathy Index

2.50

van der Waals Volume

86

Optical Properties

Max Absorption	Extinction Coefficient
250	0.30

Outside Data

Wikipedia Entry	Cysteine

Ingredient(s) Using This Amino Acid

Ingredient(s) Using This Amino Acid

1	L-Cysteine Hydrochloride Monohydrate (solid)
2	L-Cysteine Hydrochloride, 100 mM
3	L-Cysteine, 10 mg/ml
4	L-Cysteine, 100 mM