Simple sequence proteins in prokaryotic proteomes

BMC Genomics

Table 1 Relationships between the top ranking amino acids in SSPs and non-SSPs and the genomic GC content of prokaryotes¹.

Amino acid	Median GC (SSPs)	Median GC (Non-SSPs)	Variance in GC (SSPs)	Variance in GC (Non-SSPs)	Lowest GC (SSPs)	Lowest GC (Non-SSPs)	Highest GC (SSPs)	Highest GC (Non-SSPs)
L	42.5	42	160.57	158.35	22.5	22.5	72.1	72.1
A	50	51	119.19	112.05	33.5	33.5	72.1	72.1
G	55.8	58.5	98.79	62.03	33.5	45	72.1	72.1
V	52	51.3	72.82	78.22	38.2	36.7	67.5	67.5
I	31.6	36	33.59	29.49	22.5	22.5	50	50
K	34.45	32	31.92	20.95	22.5	22.5	45	43
E	42	42	41.46	37.58	31.7	35	60	60
N	29	-	7.96	-	25.7	-	34.6	-
R	66.55	-²	4.21	-	65.1	-	68	-
S	38	40	34.56	39.69	25.7	27.5	60	50
T	37	-	21.15	-	32	-	46.3	-

¹: Amino acids displaying differences in abundance patterns between SSPs and non-SSPs are shown in bold face type. Aspartic acid ranked top only in the non-SSPs of Halobacterium sp NRC1 (GC 65.9%).
²: Arginine ranked top in the non-SSPs of Xanthomonas oryzae pv oryzae KACC10331 (GC 63.7%) only.

ISSN: 1471-2164