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Table 1 Purification of the ATPase from Aphanothece halophytica.

From: Na+-stimulated ATPase of alkaliphilic halotolerant cyanobacterium Aphanothece halophytica translocates Na+ into proteoliposomes via Na+ uniport mechanism

Step

Total protein (mg)

Total activity (unit)a

Specific activity (unit mg-1)

Purification (fold)

Yield (%)

Membrane vesicles

162.0

4315

26.6

1.0

100.0

Solubilized protein

55.5

3720

67.0

2.5

86.2

PEG 6000 precipitation

4.4

1062

241.4

9.1

24.6

Superose 6

0.6

280

466.7

17.5

6.5

  1. a One unit corresponded to 1 nmol of inorganic phosphate produced per min.