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Table 2 Relative activity of purified Paracoccus sp. 32d β-D-galactosidase with various nitrophenyl-derived chromogenic substrates

From: A novel cold-active β-D-galactosidase from the Paracoccus sp. 32d - gene cloning, purification and characterization

Substrate

Relative activity (%)

o-nitrophenyl-β-D-galactopyranoside

100

p-nitrophenyl-β-D-galactopyranoside

62

p-nitrophenyl-β-D-fucopyranoside

39

p-nitrophenyl-β-D-galacturonide

1

p-nitrophenyl-β-D-glucopyranoside

< 0.01

p-nitrophenyl-β-L-arabinopyranoside

< 0.01

p-nitrophenyl-β-D-cellobioside

< 0.01

p-nitrophenyl-β-D-xylopyranoside

< 0.01

p-nitrophenyl-β-D-mannopyranoside

< 0.01

p-nitrophenyl-β-D-glucuronide

< 0.01

p-nitrophenyl-α-D-galactopyranoside

< 0.01