Table 1.

Analysis of amino acid representation in the analyzed protein sequences of human and yeast

Human					Yeast
Amino acid	Overall (%)	Second position (%)	Third position (%)	Fourth position (%)	Overall (%)	Second position (%)	Third position (%)	Fourth position (%)
A	7.02	22.9	11.9	9.8	5.60	7.93	5.8	4.5
C	2.33	0.8	1.8	1.9	1.29	0.75	0.9	0.9
D	4.84	6.2	4.3	3.0	5.83	5.25	5.1	5.0
E	6.95	9.1	6.1	6.1	6.55	4.30	6.1	6.5
F	3.76	1.8	2.9	3.4	4.49	3.71	4.8	5.0
G	6.72	7.5	7.0	6.6	5.06	4.59	4.4	3.0
H	2.57	0.9	1.9	1.7	2.13	1.41	2.0	1.8
I	4.49	1.5	2.2	3.0	6.54	3.24	5.8	6.0
K	5.67	4.6	4.0	4.7	7.30	5.93	8.3	7.4
L	9.86	5.5	9.8	11.7	9.53	6.62	8.1	9.4
M	2.19	1.6	1.7	2.1	2.08	1.58	1.7	1.3
N	3.69	3.6	3.0	3.1	6.08	5.42	5.5	6.3
P	6.14	4.9	8.1	8.1	4.33	4.42	3.5	4.8
Q	4.69	2.4	3.5	4.3	3.91	2.55	4.2	4.6
R	5.55	5.0	7.1	7.1	4.43	2.88	6.0	5.8
S	8.03	11.4	10.5	9.5	8.93	23.74	12.5	11.5
T	5.35	4.4	6.3	5.4	5.86	7.55	6.1	6.9
V	6.11	3.8	5.0	5.2	5.64	6.04	5.5	5.3
W	1.22	1.2	1.5	1.5	1.05	0.58	0.7	0.7
Y	2.81	0.9	1.3	1.8	3.35	1.51	3.1	3.1

Note: The most abundant amino acids (L, A and S) are presented in bold.