Alpha-mannosidase [Carbohydrate transport and metabolism].

Glycosyl hydrolases family 38 C-terminal domain. Glycosyl hydrolases are key enzymes of carbohydrate metabolism.

Glycosyl hydrolases family 38 C-terminal beta sandwich domain. This domain is found at the C-terminal end of various glycosyl hydrolases belonging to family 38. The domain has a beta sandwich fold.

Glycosyl hydrolases family 38 N-terminal domain. Glycosyl hydrolases are key enzymes of carbohydrate metabolism.

N-terminal catalytic domain of class II alpha-mannosidases and similar proteins; glycoside hydrolase family 38 (GH38). Alpha-mannosidases (EC 3.2.1.24) are extensively found in eukaryotes and play important roles in the processing of newly formed N-glycans and in degradation of mature glycoproteins. A deficiency of this enzyme causes the lysosomal storage disease alpha-mannosidosis. Many bacterial and archaeal species also possess putative alpha-mannosidases, but their activity and specificity is largely unknown. Based on different functional characteristics and sequence homology, alpha-mannosidases have been organized into two classes (class I, belonging to glycoside hydrolase family 47, and class II, belonging to glycoside hydrolase family 38). Members of this family corresponds to class II alpha-mannosidases (alphaMII), which contain intermediate Golgi alpha-mannosidases II, acidic lysosomal alpha-mannosidases, animal sperm and epididymal alpha -mannosidases, neutral ER/cytosolic alpha-mannosidases, and some putative prokaryotic alpha-mannosidases. AlphaMII possess a-1,3, a-1,6, and a-1,2 hydrolytic activity, and catalyzes the degradation of N-linked oligosaccharides. The N-terminal catalytic domain of alphaMII adopts a structure consisting of parallel 7-stranded beta/alpha barrel. Members in this family are retaining glycosyl hydrolases of family GH38 that employs a two-step mechanism involving the formation of a covalent glycosyl enzyme complex. Two carboxylic acids positioned within the active site act in concert: one as a catalytic nucleophile and the other as a general acid/base catalyst.

Structureof S.pombe alpha-mannosidase Ams1 [Schizosaccharomyces pombe 972h-],6LZ1_B Structure of S.pombe alpha-mannosidase Ams1 [Schizosaccharomyces pombe 972h-],6LZ1_C Structure of S.pombe alpha-mannosidase Ams1 [Schizosaccharomyces pombe 972h-],6LZ1_D Structure of S.pombe alpha-mannosidase Ams1 [Schizosaccharomyces pombe 972h-]

ChainA, Alpha-mannosidase,ZZ-type zinc finger-containing protein P35G2.11c,Maltose/maltodextrin-binding periplasmic protein [synthetic construct],7DD9_C Chain C, Alpha-mannosidase,ZZ-type zinc finger-containing protein P35G2.11c,Maltose/maltodextrin-binding periplasmic protein [synthetic construct],7DD9_E Chain E, Alpha-mannosidase,ZZ-type zinc finger-containing protein P35G2.11c,Maltose/maltodextrin-binding periplasmic protein [synthetic construct],7DD9_G Chain G, Alpha-mannosidase,ZZ-type zinc finger-containing protein P35G2.11c,Maltose/maltodextrin-binding periplasmic protein [synthetic construct]

Structureof the S. cerevisiae alpha-mannosidase 1 [Saccharomyces cerevisiae S288C]

Alpha-mannosidase OS=Schizosaccharomyces pombe (strain 972 / ATCC 24843) OX=284812 GN=ams1 PE=1 SV=1

Alpha-mannosidase 2C1 OS=Homo sapiens OX=9606 GN=MAN2C1 PE=1 SV=1

Alpha-mannosidase 2C1 OS=Mus musculus OX=10090 GN=Man2c1 PE=1 SV=1

Alpha-mannosidase 2C1 OS=Rattus norvegicus OX=10116 GN=Man2c1 PE=1 SV=1

Alpha-mannosidase OS=Saccharomyces cerevisiae (strain ATCC 204508 / S288c) OX=559292 GN=AMS1 PE=1 SV=2