Glycosyl Hydrolase Family 88. Unsaturated glucuronyl hydrolase catalyzes the hydrolytic release of unsaturated glucuronic acids from oligosaccharides (EC:3.2.1.-) produced by the reactions of polysaccharide lyases.

M14 family of metallocarboxypeptidases and related proteins. The M14 family of metallocarboxypeptidases (MCPs), also known as funnelins, are zinc-binding carboxypeptidases (CPs) which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. Two major subfamilies of the M14 family, defined based on sequence and structural homology, are the A/B and N/E subfamilies. Enzymes belonging to the A/B subfamily are normally synthesized as inactive precursors containing preceding signal peptide, followed by an N-terminal pro-region linked to the enzyme; these proenzymes are called procarboxypeptidases. The A/B enzymes can be further divided based on their substrate specificity; Carboxypeptidase A-like (CPA-like) enzymes favor hydrophobic residues while carboxypeptidase B-like (CPB-like) enzymes only cleave the basic residues lysine or arginine. The A forms have slightly different specificities, with Carboxypeptidase A1 (CPA1) preferring aliphatic and small aromatic residues, and CPA2 preferring the bulky aromatic side chains. Enzymes belonging to the N/E subfamily enzymes are not produced as inactive precursors and instead rely on their substrate specificity and subcellular compartmentalization to prevent inappropriate cleavage. They contain an extra C-terminal transthyretin-like domain, thought to be involved in folding or formation of oligomers. MCPs can also be classified based on their involvement in specific physiological processes; the pancreatic MCPs participate only in alimentary digestion and include carboxypeptidase A and B (A/B subfamily), while others, namely regulatory MCPs or the N/E subfamily, are involved in more selective reactions, mainly in non-digestive tissues and fluids, acting on blood coagulation/fibrinolysis, inflammation and local anaphylaxis, pro-hormone and neuropeptide processing, cellular response and others. Another MCP subfamily, is that of succinylglutamate desuccinylase /aspartoacylase, which hydrolyzes N-acetyl-L-aspartate (NAA), and deficiency in which is the established cause of Canavan disease. Another subfamily (referred to as subfamily C) includes an exceptional type of activity in the MCP family, that of dipeptidyl-peptidase activity of gamma-glutamyl-(L)-meso-diaminopimelate peptidase I which is involved in bacterial cell wall metabolism.

Crystalstructure of unsaturated glucuronyl hydrolase from Streptcoccus agalactiae [Streptococcus agalactiae]

Crystalstructure of unsaturated glucuronyl hydrolase from Streptcoccus agalactiae [Streptococcus agalactiae serogroup III]

Crystalstructure of unsaturated glucuronyl hydrolase mutant D175N from Streptcoccus agalactiae [Streptococcus agalactiae serogroup III],3ANK_A Crystal structure of unsaturated glucuronyl hydrolase mutant D175N from Streptcoccus agalactiae complexed with dGlcA-GalNAc6S [Streptococcus agalactiae serogroup III]

Crystalstructure of unsaturated glucuronyl hydrolase mutant D115N from Streptcoccus agalactiae [Streptococcus agalactiae NEM316],3VXD_B Crystal structure of unsaturated glucuronyl hydrolase mutant D115N from Streptcoccus agalactiae [Streptococcus agalactiae NEM316],3VXD_C Crystal structure of unsaturated glucuronyl hydrolase mutant D115N from Streptcoccus agalactiae [Streptococcus agalactiae NEM316],3VXD_D Crystal structure of unsaturated glucuronyl hydrolase mutant D115N from Streptcoccus agalactiae [Streptococcus agalactiae NEM316]

Crystalstructure of unsaturated glucuronyl hydrolase mutant D115N/K370S from Streptococcus agalactiae [Streptococcus agalactiae NEM316]

Unsaturated chondroitin disaccharide hydrolase OS=Streptococcus pneumoniae (strain ATCC BAA-255 / R6) OX=171101 GN=ugl PE=1 SV=1

Unsaturated chondroitin disaccharide hydrolase OS=Streptococcus pyogenes serotype M1 OX=301447 GN=ugl PE=1 SV=1

Unsaturated chondroitin disaccharide hydrolase OS=Streptococcus agalactiae serotype III (strain NEM316) OX=211110 GN=gbs1889 PE=1 SV=1

Unsaturated glucuronyl hydrolase OS=Bacillus sp. (strain GL1) OX=84635 GN=ugl PE=1 SV=1

Unsaturated glucuronyl hydrolase OS=Formosa agariphila (strain DSM 15362 / KCTC 12365 / LMG 23005 / KMM 3901 / M-2Alg 35-1) OX=1347342 GN=BN863_21900 PE=1 SV=1