1	M0H	S-(hydroxymethyl)-L-cysteine	1.000
2	QCS	S-carbamoyl-L-cysteine	0.900
3	SCY	S-acetyl-cysteine	0.900
4	060	S-methyl-D-cysteine	0.889
5	SMC	S-methylcysteine	0.889
6	6KM	S-propanoyl-L-cysteine	0.818
7	ECX	S-ethyl-L-cysteine	0.800
8	XCN	S-cyano-L-cysteine	0.800
9	A8C	3-(methylsulfanyl)propanoic acid	0.778
10	BB9	(2z)-2-amino-3-sulfanylprop-2-enoic acid	0.778
11	CYS	Cysteine	0.778
12	DCY	D-cysteine	0.778
13	A1A7V	S-lactoyl-L-cysteine	0.750
14	C3Y	S-[(1s)-1-hydroxy-1-(hydroxyamino)ethyl]-L-cysteine	0.750
15	CGV	S-[(R)-carboxy(hydroxy)methyl]-L-cysteine	0.750
16	CY4	S-butyryl-cystein	0.750
17	CYW	S-[(2r)-2-hydroxypropanoyl]-L-cysteine	0.750
18	I3L	Allyl-cysteine	0.727
19	OCY	Hydroxyethylcysteine	0.727
20	SLZ	L-thialysine	0.727
21	SWW	(2~{S})-2-azanyl-3-(2-hydroxyethylsulfanyl)propanoic acid	0.727
22	03Y	2-methyl-L-cysteine	0.700
23	BB6	(2z)-2-amino-3-sulfanylbut-2-enoic acid	0.700
24	CG6	Beta-methyl-cysteine	0.700
25	CSB	Cys bound to lead ion	0.700
26	CSO	S-hydroxycysteine	0.700
27	CSS	S-mercaptocysteine	0.700
28	CSX	S-oxy cysteine	0.700
29	CSZ	S-selanyl cysteine	0.700
30	DEI	(2z)-2-hydroxy-3-(methylsulfanyl)prop-2-enoic acid	0.700
31	DQY	3-(dimethyl-lambda~4~-sulfanyl)propanoic acid	0.700