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Table 2 Differences between various indices of four sets of halophile proteins and their non-halophilic orthologs

From: Molecular signature of hypersaline adaptation: insights from genome and proteome composition of halophilic prokaryotes

 

Mean

 

Set I (287 pairs of orthologous proteins)

Set II (104 pairs of orthologous proteins)

Set III (584 pairs of orthologous proteins)

Set IV (574 pairs of orthologous proteins)

Indices

SRUB proteins

PLUT proteins

HMAR1 proteins

PPUT proteins

HMAR1 proteins

MTHP proteins

NPHA proteins

UMET proteins

Average hydrophobicity [52]

-0.37

-0.20*

-0.32

-0.12*

-0.37

-0.16*

-0.33

-0.20*

Positively charged residues (%)

10.33

12.26*

8.10

10.44*

8.84

13.03*

9.08

12.92*

Negatively charged residues (%)

17.13*

13.40

18.87*

12.32

19.54*

14.01

19.38*

13.50

Isoelectric point

5.09

6.61*

4.38

6.31*

4.46

6.70*

4.49

6.96*

Cysteine residue (%)

0.74

0.96†

0.85

1.23†

0.82

1.25*

0.81

1.18*

Valine residue (%)

8.07*

7.42

8.69†

7.95

8.84*

8.16

9.03*

8.01

Threonine residue (%)

5.84*

5.12

6.22*

5.09

6.08*

4.17

6.11*

5.29

Large, hydrophobic residues (I, L, M, F) (%)

18.62

22.06*

17.72

21.12*

16.79

22.26*

16.72

21.46*

  1. *Significance at p < 10-5 ; †significance at p < 10-3. Organism abbreviations are listed in Table 1.
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