xyloglucan:xyloglucosyl transferase is a glycosyl hydrolase family 16 protein that cleaves and religates xyloglucan polymers, an essential constituent of the plant primary cell wall
Xyloglucan endotransglycosylase, member of glycosyl hydrolase family 16; Xyloglucan ...
33-289
7.05e-151
Xyloglucan endotransglycosylase, member of glycosyl hydrolase family 16; Xyloglucan endotransglycosylases (XETs) cleave and religate xyloglucan polymers in plant cell walls via a transglycosylation mechanism. Xyloglucan is a soluble hemicellulose with a backbone of beta-1,4-linked glucose units, partially substituted with alpha-1,6-linked xylopyranose branches. It binds noncovalently to cellulose, cross-linking the adjacent cellulose microfibrils, giving it a key structural role as a matrix polymer. Therefore, XET plays an important role in all plant processes that require cell wall remodeling.
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Pssm-ID: 185685 [Multi-domain] Cd Length: 263 Bit Score: 422.38 E-value: 7.05e-151
Xyloglucan endotransglycosylase, member of glycosyl hydrolase family 16; Xyloglucan ...
33-289
7.05e-151
Xyloglucan endotransglycosylase, member of glycosyl hydrolase family 16; Xyloglucan endotransglycosylases (XETs) cleave and religate xyloglucan polymers in plant cell walls via a transglycosylation mechanism. Xyloglucan is a soluble hemicellulose with a backbone of beta-1,4-linked glucose units, partially substituted with alpha-1,6-linked xylopyranose branches. It binds noncovalently to cellulose, cross-linking the adjacent cellulose microfibrils, giving it a key structural role as a matrix polymer. Therefore, XET plays an important role in all plant processes that require cell wall remodeling.
Pssm-ID: 185685 [Multi-domain] Cd Length: 263 Bit Score: 422.38 E-value: 7.05e-151
Xyloglucan endotransglycosylase, member of glycosyl hydrolase family 16; Xyloglucan ...
33-289
7.05e-151
Xyloglucan endotransglycosylase, member of glycosyl hydrolase family 16; Xyloglucan endotransglycosylases (XETs) cleave and religate xyloglucan polymers in plant cell walls via a transglycosylation mechanism. Xyloglucan is a soluble hemicellulose with a backbone of beta-1,4-linked glucose units, partially substituted with alpha-1,6-linked xylopyranose branches. It binds noncovalently to cellulose, cross-linking the adjacent cellulose microfibrils, giving it a key structural role as a matrix polymer. Therefore, XET plays an important role in all plant processes that require cell wall remodeling.
Pssm-ID: 185685 [Multi-domain] Cd Length: 263 Bit Score: 422.38 E-value: 7.05e-151
glycosyl hydrolase family 16; The O-Glycosyl hydrolases are a widespread group of enzymes that ...
58-207
3.09e-25
glycosyl hydrolase family 16; The O-Glycosyl hydrolases are a widespread group of enzymes that hydrolyse the glycosidic bond between two or more carbohydrates, or between a carbohydrate and a non-carbohydrate moiety. A glycosyl hydrolase classification system based on sequence similarity has led to the definition of more than 95 different families inlcuding glycosyl hydrolase family 16. Family 16 includes lichenase, xyloglucan endotransglycosylase (XET), beta-agarase, kappa-carrageenase, endo-beta-1,3-glucanase, endo-beta-1,3-1,4-glucanase, and endo-beta-galactosidase, all of which have a conserved jelly roll fold with a deep active site channel harboring the catalytic residues.
Pssm-ID: 185683 [Multi-domain] Cd Length: 210 Bit Score: 99.82 E-value: 3.09e-25
glycosylphosphatidylinositol-glucanosyltransferase; Group of fungal GH16 members related to ...
78-222
9.85e-25
glycosylphosphatidylinositol-glucanosyltransferase; Group of fungal GH16 members related to Saccharomyces cerevisiae Crh1p. Chr1p and Crh2p are transglycosylases that are required for the linkage of chitin to beta(1-3)glucose branches of beta(1-6)glucan, an important step in the assembly of new cell wall. Both have been shown to be glycosylphosphatidylinositol (GPI)-anchored. A third homologous protein, Crr1p, functions in the formation of the spore wall. They belongs to the family 16 of glycosyl hydrolases that includes lichenase, xyloglucan endotransglycosylase (XET), beta-agarase, kappa-carrageenase, endo-beta-1,3-glucanase, endo-beta-1,3-1,4-glucanase, and endo-beta-galactosidase, all of which have a conserved jelly roll fold with a deep active site channel harboring the catalytic residues.
Pssm-ID: 185692 [Multi-domain] Cd Length: 203 Bit Score: 98.39 E-value: 9.85e-25
lichenase, member of glycosyl hydrolase family 16; Lichenase, also known as 1,3-1, ...
36-201
1.91e-23
lichenase, member of glycosyl hydrolase family 16; Lichenase, also known as 1,3-1,4-beta-glucanase, is a member of glycosyl hydrolase family 16, that specifically cleaves 1,4-beta-D-glucosidic bonds in mixed-linked beta glucans that also contain 1,3-beta-D-glucosidic linkages. Natural substrates of beta-glucanase are beta-glucans from grain endosperm cell walls or lichenan from the Islandic moss, Cetraria islandica. This protein is found not only in bacteria but also in anaerobic fungi. This domain includes two seven-stranded antiparallel beta-sheets that are adjacent to one another forming a compact, jellyroll beta-sandwich structure.
Pssm-ID: 185684 [Multi-domain] Cd Length: 212 Bit Score: 95.03 E-value: 1.91e-23
Xyloglucan endo-transglycosylase (XET) C-terminus; This family represents the C-terminus ...
242-289
1.79e-15
Xyloglucan endo-transglycosylase (XET) C-terminus; This family represents the C-terminus (approximately 60 residues) of plant xyloglucan endo-transglycosylase (XET). Xyloglucan is the predominant hemicellulose in the cell walls of most dicotyledons. With cellulose, it forms a network that strengthens the cell wall. XET catalyzes the splitting of xyloglucan chains and the linking of the newly generated reducing end to the non-reducing end of another xyloglucan chain, thereby loosening the cell wall. Note that all family members contain the pfam00722 domain.
Pssm-ID: 429210 [Multi-domain] Cd Length: 48 Bit Score: 68.85 E-value: 1.79e-15
Laminarinase, member of the glycosyl hydrolase family 16; Laminarinase, also known as glucan ...
78-189
1.58e-08
Laminarinase, member of the glycosyl hydrolase family 16; Laminarinase, also known as glucan endo-1,3-beta-D-glucosidase, is a glycosyl hydrolase family 16 member that hydrolyzes 1,3-beta-D-glucosidic linkages in 1,3-beta-D-glucans such as laminarins, curdlans, paramylons, and pachymans, with very limited action on mixed-link (1,3-1,4-)-beta-D-glucans.
Pssm-ID: 185693 [Multi-domain] Cd Length: 235 Bit Score: 54.17 E-value: 1.58e-08
Beta-agarase, member of glycosyl hydrolase family 16; Beta-agarase is a glycosyl hydrolase ...
62-199
2.06e-05
Beta-agarase, member of glycosyl hydrolase family 16; Beta-agarase is a glycosyl hydrolase family 16 (GH16) member that hydrolyzes the internal beta-1,4-linkage of agarose, a hydrophilic polysaccharide found in the cell wall of Rhodophyceaea, marine red algae. Agarose is a linear chain of galactose units linked by alternating L-alpha-1,3- and D-beta-1,4-linkages that are additionally modified by a 3,6-anhydro-bridge. Agarose forms thermo-reversible gels that are widely used in the food industry or as a laboratory medium. While beta-agarases are also found in two other families derived from the sequence-based classification of glycosyl hydrolases (GH50, and GH86) the GH16 members are most abundant. This domain adopts a curved beta-sandwich conformation, with a tunnel-shaped active site cavity, referred to as a jellyroll fold.
Pssm-ID: 185687 Cd Length: 258 Bit Score: 45.03 E-value: 2.06e-05
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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