glycosyl hydrolase family 36 (GH36). GH36 enzymes occur in prokaryotes, eukaryotes, and archaea with a wide range of hydrolytic activities, including alpha-galactosidase, alpha-N-acetylgalactosaminidase, stachyose synthase, and raffinose synthase. All GH36 enzymes cleave a terminal carbohydrate moiety from a substrate that varies considerably in size, depending on the enzyme, and may be either a starch or a glycoprotein. GH36 members are retaining enzymes that cleave their substrates via an acid/base-catalyzed, double-displacement mechanism involving a covalent glycosyl-enzyme intermediate. Two aspartic acid residues have been identified as the catalytic nucleophile and the acid/base, respectively.

Alpha-galactosidase [Carbohydrate transport and metabolism].

Melibiase. Glycoside hydrolase families GH27, GH31 and GH36 form the glycoside hydrolase clan GH-D. Glycoside hydrolase family 36 can be split into 11 families, GH36A to GH36K. This family includes enzymes from GH36A-B and GH36D-K and from GH27.

glucosidase NET37. NET37 (also known as KIAA1161) is a human lamina-associated nuclear envelope transmembrane protein. A member of the glycosyl hydrolase family 31 (GH31) , it has been shown to be required for myogenic differentiation of C2C12 cells. Related proteins are found in eukaryotes and prokaryotes. Enzymes of the GH31 family possess a wide range of different hydrolytic activities including alpha-glucosidase (glucoamylase and sucrase-isomaltase), alpha-xylosidase, 6-alpha-glucosyltransferase, 3-alpha-isomaltosyltransferase and alpha-1,4-glucan lyase. All GH31 enzymes cleave a terminal carbohydrate moiety from a substrate that varies considerably in size, depending on the enzyme, and may be either a starch or a glycoprotein.

glycosyl hydrolase family 27 (GH27). GH27 enzymes occur in eukaryotes, prokaryotes, and archaea with a wide range of hydrolytic activities, including alpha-glucosidase (glucoamylase and sucrase-isomaltase), alpha-N-acetylgalactosaminidase, and 3-alpha-isomalto-dextranase. All GH27 enzymes cleave a terminal carbohydrate moiety from a substrate that varies considerably in size, depending on the enzyme, and may be either a starch or a glycoprotein. GH27 members are retaining enzymes that cleave their substrates via an acid/base-catalyzed, double-displacement mechanism involving a covalent glycosyl-enzyme intermediate. Two aspartic acid residues have been identified as the catalytic nucleophile and the acid/base, respectively.

TtGalA,alpha-galactosidase from Thermus thermopilus in apo form [Thermus thermophilus HB8],6LCJ_B TtGalA, alpha-galactosidase from Thermus thermopilus in apo form [Thermus thermophilus HB8],6LCJ_C TtGalA, alpha-galactosidase from Thermus thermopilus in apo form [Thermus thermophilus HB8],6LCJ_D TtGalA, alpha-galactosidase from Thermus thermopilus in apo form [Thermus thermophilus HB8],6LCJ_E TtGalA, alpha-galactosidase from Thermus thermopilus in apo form [Thermus thermophilus HB8],6LCJ_F TtGalA, alpha-galactosidase from Thermus thermopilus in apo form [Thermus thermophilus HB8],6LCK_A TtGalA, alpha-galactosidase from Thermus thermophilus in complex with p-nitrophenyl alpha-D-galactopyranoside (alpha-NPG) [Thermus thermophilus HB8],6LCK_B TtGalA, alpha-galactosidase from Thermus thermophilus in complex with p-nitrophenyl alpha-D-galactopyranoside (alpha-NPG) [Thermus thermophilus HB8],6LCK_C TtGalA, alpha-galactosidase from Thermus thermophilus in complex with p-nitrophenyl alpha-D-galactopyranoside (alpha-NPG) [Thermus thermophilus HB8],6LCL_A TtGalA, alpha-galactosidase from Thermus thermophilus in complex with stachyose [Thermus thermophilus HB8],6LCL_C TtGalA, alpha-galactosidase from Thermus thermophilus in complex with stachyose [Thermus thermophilus HB8],6LCL_E TtGalA, alpha-galactosidase from Thermus thermophilus in complex with stachyose [Thermus thermophilus HB8]

Structureof apo structure of GH36 alpha-galactosidase from Thermotoga maritima [Thermotoga maritima],5M12_A Structure of GH36 alpha-galactosidase from Thermotoga maritima in complex with intact cyclopropyl-carbasugar. [Thermotoga maritima],5M16_A Structure of GH36 alpha-galactosidase from Thermotoga maritima in complex with a hydrolysed cyclopropyl carbasugar. [Thermotoga maritima],5M1I_A Structure of GH36 alpha-galactosidase from Thermotoga maritima in a covalent complex with a cyclopropyl carbasugar. [Thermotoga maritima],6GVD_A Alpha-galactosidase from Thermotoga maritima in complex with cyclohexene-based carbasugar mimic of galactose [Thermotoga maritima MSB8],6GWG_A Alpha-galactosidase from Thermotoga maritima in complex with cyclohexene-based carbasugar mimic of galactose covalently linked to the nucleophile [Thermotoga maritima MSB8],6GX8_A Alpha-galactosidase from Thermotoga maritima in complex with hydrolysed cyclohexene-based carbasugar mimic of galactose [Thermotoga maritima MSB8]

Crystalstructure of Alpha-galactosidase (EC 3.2.1.22) (Melibiase) (tm1192) from Thermotoga maritima at 2.34 A resolution [Thermotoga maritima]

Alpha-galactosidasemutant D378A from Thermotoga maritima in complex with intact cyclohexene-based carbasugar mimic of galactose with 3,5 difluorophenyl leaving group [Thermotoga maritima MSB8],6GWF_A Alpha-galactosidase mutant D387A from Thermotoga maritima in complex with intact cyclohexene-based carbasugar mimic of galactose with 2,4-dinitro leaving group [Thermotoga maritima MSB8]

galactosidasedomain of alpha-galactosidase-sucrose kinase, AgaSK [[Ruminococcus] gnavus E1],2YFO_A GALACTOSIDASE DOMAIN OF ALPHA-GALACTOSIDASE-SUCROSE KINASE, AGASK, in complex with galactose [[Ruminococcus] gnavus E1]

Alpha-galactosidase OS=Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8) OX=243274 GN=galA PE=1 SV=1

Alpha-galactosidase OS=Escherichia coli OX=562 GN=rafA PE=1 SV=1

Bifunctional alpha-galactosidase/sucrose kinase AgaSK OS=Ruminococcus gnavus OX=33038 GN=agaSK PE=1 SV=1

Probable alpha-galactosidase G OS=Emericella nidulans (strain FGSC A4 / ATCC 38163 / CBS 112.46 / NRRL 194 / M139) OX=227321 GN=aglG PE=2 SV=1