Alpha amylase catalytic domain found in sucrose phosphorylase (also called sucrose glucosyltransferase, disaccharide glucosyltransferase, and sucrose-phosphate alpha-D glucosyltransferase). Sucrose phosphorylase is a bacterial enzyme that catalyzes the phosphorolysis of sucrose to yield glucose-1-phosphate and fructose. These enzymes do not have the conserved calcium ion present in other alpha amylase family enzymes. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.

sucrose phosphorylase. In the forward direction, this enzyme uses phosphate to cleave sucrose into D-fructose + alpha-D-glucose 1-phosphate. Characterized representatives from Streptococcus mutans and Bifidobacterium adolescentis represent well-separated branches of a molecular phylogenetic tree. In S. mutans, the region including this gene has been associated with neighboring transporter genes and multiple sugar metabolism.

Alpha amylase catalytic domain found in sucrose phosphorylase (also called sucrose glucosyltransferase, disaccharide glucosyltransferase, and sucrose-phosphate alpha-D glucosyltransferase). Sucrose phosphorylase is a bacterial enzyme that catalyzes the phosphorolysis of sucrose to yield glucose-1-phosphate and fructose. These enzymes do not have the conserved calcium ion present in other alpha amylase family enzymes. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.

sucrose phosphorylase; Provisional

Alpha amylase catalytic domain found in sucrose phosphorylase-like proteins (also called sucrose glucosyltransferase, disaccharide glucosyltransferase, and sucrose-phosphate alpha-D glucosyltransferase). Sucrose phosphorylase is a bacterial enzyme that catalyzes the phosphorolysis of sucrose to yield glucose-1-phosphate and fructose. These enzymes do not have the conserved calcium ion present in other alpha amylase family enzymes. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.

Crystalstructure of sucrose 6F-phosphate phosphorylase from Thermoanaerobacter thermosaccharolyticum [Thermoanaerobacterium thermosaccharolyticum DSM 571],6S9V_B Crystal structure of sucrose 6F-phosphate phosphorylase from Thermoanaerobacter thermosaccharolyticum [Thermoanaerobacterium thermosaccharolyticum DSM 571]

SucrosePhosphorylase from Bifidobacterium adolescentis [Bifidobacterium adolescentis],1R7A_B Sucrose Phosphorylase from Bifidobacterium adolescentis [Bifidobacterium adolescentis]

Sucrosephosphorylase from BIFIDOBACTERIUM ADOLESCENTIS reacted with sucrose [Bifidobacterium adolescentis],2GDV_B Sucrose phosphorylase from BIFIDOBACTERIUM ADOLESCENTIS reacted with sucrose [Bifidobacterium adolescentis]

E232Qmutant of sucrose phosphorylase from BIFIDOBACTERIUM ADOLESCENTIS in complex with sucrose [Bifidobacterium adolescentis],2GDU_B E232Q mutant of sucrose phosphorylase from BIFIDOBACTERIUM ADOLESCENTIS in complex with sucrose [Bifidobacterium adolescentis]

Structureof sucrose phosphorylase from Bifidobacterium adolescentis bound to nigerose [Bifidobacterium adolescentis]

Sucrose phosphorylase OS=Leuconostoc mesenteroides OX=1245 PE=1 SV=1

Sucrose phosphorylase OS=Streptococcus mutans serotype c (strain ATCC 700610 / UA159) OX=210007 GN=gtfA PE=1 SV=4

Glucosylglycerol phosphorylase OS=Marinobacter adhaerens (strain DSM 23420 / HP15) OX=225937 GN=gtfA PE=1 SV=1

Sucrose 6(F)-phosphate phosphorylase OS=Thermoanaerobacterium thermosaccharolyticum (strain ATCC 7956 / DSM 571 / NCIMB 9385 / NCA 3814 / NCTC 13789 / WDCM 00135 / 2032) OX=580327 GN=spp PE=1 SV=1

Sucrose phosphorylase OS=Bifidobacterium adolescentis (strain ATCC 15703 / DSM 20083 / NCTC 11814 / E194a) OX=367928 GN=sucP PE=1 SV=1