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3.2.1.23: beta-galactosidase

This is an abbreviated version!
For detailed information about beta-galactosidase, go to the full flat file.

Word Map on EC 3.2.1.23

Reaction

beta-D-galactopyranosyl-(1-4)-beta-D-galactopyranosyl-(1-6)-beta-D-galactopyranosyl-(1-3)-beta-D-galactopyranose
+ 3 H2O = 4 beta-D-galactopyranose

Synonyms

Aabeta-gal, Acid beta-galactosidase, B-GAL, BbgI, BbgII, BbgIII, BbgIV, beta galactosidase, beta-D-galactohydrolase, beta-D-galactosidase, beta-D-galactoside galactohydrolase, beta-D-glactanase, beta-D-lactosidase, beta-gal, beta-Gal 1, beta-Gal 2, beta-Gal II, beta-galactosidase, beta-galactosidase I, beta-galactosidase II, beta-galactosidase III, beta-galactosidase IV, beta-galase, beta-lactosidase, betagal, betaGly4, betaGS, BGA, BgaB, BgaBM, bgaD, BgaH, BGAL, BGAL1, BGAL10, BGAL11, BGAL12, BGAL13, BGAL14, BGAL15, BGAL16, BGAL17, BGAL2, BGAL3, BGAL4, BGAL5, BGAL6, BGAL7, BGAL8, BGAL9, BgalA, BgAP, BgaS, BgaX, BGL1, BglAp, BGT I, BGT II, cold-active beta-galactosidase, CTP-beta-gal, driselase, EABase, endo-beta-galactosidase, Exo-(1-->4)-beta-D-galactanase, exo-beta-(1->3)-D-galactanase, Gal-2, Gal-5, GAL1, Gal2, Gal3, Gal4, GALA, galactanase, galactosidase, galactosidase, beta, GALB, gherkin lactase, H-BgaS, hcbetagal, Hlac_2868, Hydrolact, LacA, LACS, lactase, lactase phlorizin hydrolase, lactosylceramidase II, Lactozym, Lactozym 3000L, LPH, Maxilact, Maxilact-L/2000, MeBglD2, More, ONPGase, Oryzatym, p-nitrophenyl beta-galactosidase, PF1208, PRGH1, S 2107, SA-beta-GAL, SA-betagal, senescence-associated beta-galactosidase, SPD_0065 protein, SR12 protein, Ss beta-gal, SSO3019, SSU0587, Sumiklat, Trilactase, XC1214, XG-specific beta-galactosidase, YesZ, YH4502, ZD410

ECTree

     3 Hydrolases
         3.2 Glycosylases
             3.2.1 Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
                3.2.1.23 beta-galactosidase

KI Value

KI Value on EC 3.2.1.23 - beta-galactosidase

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Ki VALUE [mM]
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
1 - 1.4
2-amino-2-deoxy-D-galactopyranose
0.025 - 8.4
2-nitrophenyl 1-thio-beta-D-galactopyranoside
37.1
2-nitrophenyl-beta-D-galactopyranoside
pH 6.5, 30°C
0.002 - 10
2-phenylethyl 1-thio-beta-D-galactopyranoside
4
4-aminophenyl beta-D-thiogalactopyranoside
-
pH 6.5, 75°C
0.00012
AgNO3
-
-
0.8
benzyl 3-deoxy-4-S-(beta-D-galactopyranosyl)-4-thio-beta-D-erythro-pentopyranoside
-
in sodium phosphate buffer (100 mM, pH 7.3, MgCl2 1.2 mM, beta-mercaptoethanol 100 mM)
0.032
benzyl 3-deoxy-4-S-(beta-D-galactopyranosyl)-4-thio-beta-D-threo-pentopyranoside
-
in sodium phosphate buffer (100 mM, pH 7.3, MgCl2 1.2 mM, beta-mercaptoethanol 100 mM)
96
beta-D-glucose
-
pH 6.5, 75°C
1.85
Co2+
-
70°C
0.14
Cu2+
-
70°C
0.218 - 12
D-galactal
0.085 - 0.17
D-galactono-1,4-lactone
0.4 - 24
D-galactonolactone
0.76 - 420
D-galactose
1.17 - 1170
D-glucose
2.7 - 26
galactose
0.0081 - 0.02
gamma-galactonolactone
49
glucose
Kerstingiella geocarpa
-
-
0.08 - 85
isopropyl-thio-beta-D-galactopyranoside
2 - 220
L-arabinose
0.28 - 1.4
L-ribose
0.9 - 260
lactose
9.23
Mn2+
-
70°C
0.23 - 3.38
o-nitrophenyl-beta-D-galactoside
0.34 - 1
octyl-beta-thio-galactoside
4.3
p-nitrophenyl beta-D-fucoside
-
hydrolysis of 4-methylumbelliferyl beta-D-galactoside
0.7
p-nitrophenyl beta-D-galactopyranoside
-
hydrolysis of 4-methylumbellipheryl beta-D-galactoside
additional information
additional information
-