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Galactosidase

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'''α-Galactosidase''' (Agal) hydrolyzes the terminal α-galactosyl moiety from glycoproteins and glycolipids. '''β-Galactosidase''' (Bgal) hydrolyzes β-galactosides into monosaccharides.
'''α-Galactosidase''' (Agal) hydrolyzes the terminal α-galactosyl moiety from glycoproteins and glycolipids. '''β-Galactosidase''' (Bgal) hydrolyzes β-galactosides into monosaccharides.
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Isopropyl-β-d-thiogalactopyranoside (IPTG) induces Bgal activity. Phenylethyl-β-d-thiogalactopyranoside (PETG) is an inhibitor. Galactose, lactose, o-nitrophenyl-β-d-galactoside (ONPG) are substrates. Galactopyranosyl is reaction intermediate. The image at the right correspond to one representative galactosidase, ''i.e.'' the crystal structure of galactosidase from ''Escherichia coli'' ([[3e1f]]). For details on β-galactosidase see [[Molecular Playground/Beta-galactosidase]].
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Isopropyl-β-d-thiogalactopyranoside (IPTG) induces Bgal activity. Phenylethyl-β-d-thiogalactopyranoside (PETG) is an inhibitor. Galactose, lactose, o-nitrophenyl-β-d-galactoside (ONPG) are substrates. Galactopyranosyl is reaction intermediate. For details on β-galactosidase see [[Molecular Playground/Beta-galactosidase]].
== 3D Structures of Galactosidase ==
== 3D Structures of Galactosidase ==

Revision as of 06:55, 6 April 2015

Template:STRUCTURE 3e1f

α-Galactosidase (Agal) hydrolyzes the terminal α-galactosyl moiety from glycoproteins and glycolipids. β-Galactosidase (Bgal) hydrolyzes β-galactosides into monosaccharides. Isopropyl-β-d-thiogalactopyranoside (IPTG) induces Bgal activity. Phenylethyl-β-d-thiogalactopyranoside (PETG) is an inhibitor. Galactose, lactose, o-nitrophenyl-β-d-galactoside (ONPG) are substrates. Galactopyranosyl is reaction intermediate. For details on β-galactosidase see Molecular Playground/Beta-galactosidase.

3D Structures of Galactosidase

Updated on 06-April-2015

For 3hg2 .


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