Endo-alpha-N-acetylgalactosaminidase is a member of glycoside hydrolase (GH) family 101 and hydrolases the O-glycosidic bonds in mucin-type O-glycan between alpha-GalNAc and Ser/Thr. It is a multidomain protein [1-5]. It contains a distorted (alpha/b ...
Endo-alpha-N-acetylgalactosaminidase is a member of glycoside hydrolase (GH) family 101 and hydrolases the O-glycosidic bonds in mucin-type O-glycan between alpha-GalNAc and Ser/Thr. It is a multidomain protein [1-5]. It contains a distorted (alpha/beta)8 barrel catalytic domain (referred to as domain 3) flanked by four additional domains, which are mainly made of beta-sheets (domains 2, 4, 5 and 6). This entry represents domain 5 which is part of the carbohydrate binding module.
This domain is found in Endo-alpha-N-acetylgalactosaminidase (SpGH101) from Streptococcus pneumoniae and similar bacterial proteins. This protein, which belongs to the Glycoside Hydrolase Family 101 (GH101), is a virulence factor. It hydrolyses the T ...
This domain is found in Endo-alpha-N-acetylgalactosaminidase (SpGH101) from Streptococcus pneumoniae and similar bacterial proteins. This protein, which belongs to the Glycoside Hydrolase Family 101 (GH101), is a virulence factor. It hydrolyses the T-antigen disaccharide from extracellular host glycoproteins to aid colonization. SpGH101 has seven domains. This entry represents the helical bundle domain, which consists of three alpha-helices that form an interface [1,2].
Virulence of pathogenic organisms such as the Gram-positive Streptococcus pneumoniae is largely determined by the ability to degrade host glycoproteins and to metabolise the resultant carbohydrates. This family is the enzymatic region, EC:3.2.1.97, o ...
Virulence of pathogenic organisms such as the Gram-positive Streptococcus pneumoniae is largely determined by the ability to degrade host glycoproteins and to metabolise the resultant carbohydrates. This family is the enzymatic region, EC:3.2.1.97, of the cell surface proteins that specifically cleave Gal-beta-1,3-GalNAc-alpha-Ser/Thr (T-antigen, galacto-N-biose), the core 1 type O-linked glycan common to mucin glycoproteins. This reaction is exemplified by the S. pneumoniae protein Swiss:B2DRU5, where Asp764 is the catalytic nucleophile-base and Glu796 the catalytic proton donor. This domain represents C-terminal the beta sandwich domain.
Proteins containing a galactose-binding domain-like fold can be found in several different protein families, in both eukaryotes and prokaryotes. The common function of these domains is to bind to specific ligands, such as cell-surface-attached carboh ...
Proteins containing a galactose-binding domain-like fold can be found in several different protein families, in both eukaryotes and prokaryotes. The common function of these domains is to bind to specific ligands, such as cell-surface-attached carbohydrate substrates for galactose oxidase and sialidase [1], phospholipids on the outer side of the mammalian cell membrane for coagulation factor Va [2], membrane-anchored ephrin for the Eph family of receptor tyrosine kinases [3], and a complex of broken single-stranded DNA and DNA polymerase beta for XRCC1 [4]. The structure of the galactose-binding domain-like members consists of a beta-sandwich, in which the strands making up the sheets exhibit a jellyroll fold [5].
Virulence of pathogenic organisms such as the Gram-positive Streptococcus pneumoniae is largely determined by the ability to degrade host glycoproteins and to metabolise the resultant carbohydrates. This family is the enzymatic region, EC:3.2.1.97, o ...
Virulence of pathogenic organisms such as the Gram-positive Streptococcus pneumoniae is largely determined by the ability to degrade host glycoproteins and to metabolise the resultant carbohydrates. This family is the enzymatic region, EC:3.2.1.97, of the cell surface proteins that specifically cleave Gal-beta-1,3-GalNAc-alpha-Ser/Thr (T-antigen, galacto-N-biose), the core 1 type O-linked glycan common to mucin glycoproteins. This reaction is exemplified by the S. pneumoniae protein Swiss:B2DRU5, where Asp764 is the catalytic nucleophile-base and Glu796 the catalytic proton donor.
This domain is found in endo-alpha-N-acetylgalactosaminidase present in Streptococcus pneumoniae. Endo-alpha-N-acetylgalactosaminidase is a cell surface-anchored glycoside hydrolase involved in the breakdown of mucin type O-linked glycans. The domain ...
This domain is found in endo-alpha-N-acetylgalactosaminidase present in Streptococcus pneumoniae. Endo-alpha-N-acetylgalactosaminidase is a cell surface-anchored glycoside hydrolase involved in the breakdown of mucin type O-linked glycans. The domain, known as domain 2, exhibits strong structural similarlity to the galactose mutarotase-like fold but lacks the active site residues. Domains, found in a number of glycoside hydrolases, structurally similar to domain 2 confer stability to the multidomain architectures [1].
