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. Author manuscript; available in PMC: 2020 Jul 28.
Published in final edited form as: Extremophiles. 2017 Jul 19;21(5):919–932. doi: 10.1007/s00792-017-0953-z

Table 1.

A comparison of structural parameters for PLs adapted to various thermal environments

Cp An Ec Tt St (Meso) (Thermo)
# of amino acidsa 470.0 484.0 472.0 420.0 432.0 478 ± 6 426 ± 6
Proline content (%) 4.0 7.2 5.5 10.0 4.4 6.4 ± 0.9 7 ± 3
Arginine content (%) 4.7 6.4 7.2 11.7 7.6 6.8 ± 0.4 10 ± 2
Non-polar residues (%)a 53.4 57.4 55.1 62.8 40.7 56.3 ± 1.2 52 ± 11
Polar residues (%)a 46.6 42.5 44.9 37.1 28.9 43.7 ± 1.2 33 ± 4
Charged residues (%)a 25.9 21.9 25.2 30.2 30.3 23.6 ± 1.7 30.3 ± 0.1
# of salt bridgesb 4.3 8.3 6.8 9.3 10.6 7.6 ± 0.8 10.0 ± 0.7
# of surface ion pairsc 6.4 4.5 6.6 10.5 11.6 5.6 ± 1.1 11.1 ± 0.6
TSASAa2) 22,833 20,372 20,306 18,555 18,305 20,339 ± 33 18,430 ± 125
TSASA/residue 48.6 42.1 43.0 44.2 42.4 42.6 ± 0.5 43.3 ± 0.9
CHASAb2) 10,159 7587 7302 7220 7083 7445 ± 143 7152 ± 69
CHASA/residue 21.6 15.7 15.5 17.2 16.4 15.6 ± 0.1 16.8 ± 0.4
% CHASA/TSASA 44.5 37.2 36.0 38.9 38.7 36.6 ± 0.6 38.8 ± 0.1
% per residue 2.3 2.7 2.8 2.6 2.6 2.8 ± 0.1 2.6

TSASA total solvent accessible surface area, CHASA conditional hydrophobic accessible surface area. See text for referencing

a

ProtParam tool

b

ESBRI

c

Protein interactions calculator