TABLE 3.

Electrostatic properties of proteins from 10 different organisms

The table illustrates the percentage of proteins with high and low pI (i.e. with pI >7 or <7, respectively) and the MNC.

Organism	Percentage of high pI proteins in large ribosomal subunit	Percentage of low pI proteins in large ribosomal subunit	Average MNC of proteins in large ribosomal subunita	Percentage of high pI proteins within the entire proteome (15, 36, 37)	Percentage of low pI proteins within the entire proteome (15, 36, 37)
	%	%		%	%
E. coli	93	7	0.08	36	64
T. thermophilus	94	6	0.12	∼42	∼58
D. radiodurans	91	9	0.10	∼35	∼65
S. cerevisiae	89	11	0.13	∼50	∼50
T. thermophila	100	0	0.15	∼60	∼40
S. solfataricus	97	3	0.12	∼57	∼43
M. thermautotrophicus	86	14	0.09	∼27	∼73
H. marismortuib	34	66	−0.04	∼3	∼97
H. jeotgalib	33	67	−0.03	∼8	∼92
Halophilic archaeon DL31b	30	70	−0.05	∼7	∼93

^a The average MNC is defined as the MNC averaged over all proteins belonging to the large ribosomal subunit of each species.

^b Halophile.