Table 1 Buffers and their composition used in the optimization of expression of recombinant SLSP-k.

From: Novel recombinant keratin degrading subtilisin like serine alkaline protease from Bacillus cereus isolated from marine hydrothermal vent crabs

S. no.

Buffer

Final concentration

1

Tris–HCl (Merck), pH 7.5

20 mM

Dithiothreitol (DTT) (Sigma-Aldrich)

0.1 mM

Lysozyme (Sigma-Aldrich)

1 mg/mL

2

Tris–HCl (Merck), pH 7.5

20 mM

NaCl

0.5 mM

Lysozyme (Sigma-Aldrich)

1 mg/mL

3

Phosphate buffer

20 mM

NaCl

0.5 mM

Urea

8 M

Triton-X 100

1%

4

Phosphate buffer

20 mM

NaCl

0.5 mM

Triton-X 100

1%

5

Phosphate buffer

20 mM

Triton-X 100

0.5 mM