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Table 1 Biochemical parameters of vertebrate PGI proteins.

From: Post-duplication charge evolution of phosphoglucose isomerases in teleost fishes through weak selection on many amino acid sites

  Biochemical characters1 No. of hydrophilic charged residues
  No. of amino acids Hydro-phobicity (GRAVY) Isoelectric point (pI) Positively charged (Arg+Lys) Negatively charged (Asp+Glu) Difference2
Teleost fish PGI-1       
   Fugu-1 552 -0.261 6.33 58 64 -6
   Mullet-1 553 -0.282 6.30 57 63 -6
   Smelt-1 553 -0.284 6.21 54 62 -8
   Zebrafish-1 553 -0.265 6.45 53 58 -5
   Eel-1 553 -0.359 6.36 57 63 -6
   Arowana-1 553 -0.277 6.22 56 64 -8
Teleost fish PGI-2       
   Fugu-2 553 -0.294 6.96 59 61 -2
   Mullet-2 553 -0.265 7.85 61 60 1
   Smelt-2 552 -0.337 7.36 64 64 0
   Zebrafish-2 553 -0.304 6.82 59 61 -2
   Eel-2 553 -0.285 6.75 58 61 -3
   Arowana-2 553 -0.280 7.07 63 64 -1
Non-teleost fish PGI       
   Sturgeon 555 -0.356 6.82 59 61 -2
   Gar 555 -0.308 6.83 59 61 -2
   Amia 555 -0.355 6.62 60 63 -3
   Bichir 556 -0.278 6.84 58 60 -2
Tetrapod PGI       
   Toad 553 -0.226 7.68 59 58 1
   Snake 553 -0.237 8.72 62 57 5
   Chicken 553 -0.255 8.34 64 61 3
   Mouse 558 -0.294 7.75 61 60 1
   Pig 558 -0.340 7.79 62 61 1
   Rat 558 -0.285 7.38 61 61 0
   Hamster 558 -0.322 7.08 59 60 -1
   Rabbit 558 -0.292 7.11 58 59 -1
   Human 558 -0.344 8.42 62 59 3
Jawless fish PGI       
   Hagfish 554 -0.238 7.82 57 56 1
  1. 1The predicted overall hydrophobicity (GRAVY; grand average of hydropathicity) and pI values of the PGI proteins were estimated based on the amino acid sequences translated from the cDNA sequences of Pgi genes using the ProtParam tool [49]
  2. 2Differences in number of positively and negatively charged residues in each PGI protein