Alpha-N-acetylglucosaminidase (NAGLU) tim-barrel domain. Alpha-N-acetylglucosaminidase, a lysosomal enzyme required for the stepwise degradation of heparan sulfate. Mutations on the alpha-N-acetylglucosaminidase (NAGLU) gene can lead to Mucopolysaccharidosis type IIIB (MPS IIIB; or Sanfilippo syndrome type B) characterized by neurological dysfunction but relatively mild somatic manifestations. The structure shows that the enzyme is composed of three domains. This central domain has a tim barrel fold.

Alpha-N-acetylglucosaminidase (NAGLU) C-terminal domain. Alpha-N-acetylglucosaminidase, a lysosomal enzyme required for the stepwise degradation of heparan sulfate. Mutations on the alpha-N-acetylglucosaminidase (NAGLU) gene can lead to Mucopolysaccharidosis type IIIB (MPS IIIB; or Sanfilippo syndrome type B) characterized by neurological dysfunction but relatively mild somatic manifestations. The structure shows that the enzyme is composed of three domains. This C-terminal domain has an all alpha helical fold.

Alpha-N-acetylglucosaminidase (NAGLU) N-terminal domain. Alpha-N-acetylglucosaminidase, a lysosomal enzyme required for the stepwise degradation of heparan sulfate. Mutations on the alpha-N-acetylglucosaminidase (NAGLU) gene can lead to Mucopolysaccharidosis type IIIB (MPS IIIB; or Sanfilippo syndrome type B) characterized by neurological dysfunction but relatively mild somatic manifestations. The structure shows that the enzyme is composed of three domains. This N-terminal domain has an alpha-beta fold.

Type I dockerin repeat domain. Bacterial cohesin domains bind to a complementary protein domain named dockerin, and this interaction is required for the formation of the cellulosome, a cellulose-degrading complex. The cellulosome consists of scaffoldin, a noncatalytic scaffolding polypeptide, that comprises repeating cohesion modules and a single carbohydrate-binding module (CBM). Specific calcium-dependent interactions between cohesins and dockerins appear to be essential for cellulosome assembly. This subfamily represents type I dockerins, which are responsible for anchoring a variety of enzymatic domains to the complex.

Dockerin type I repeat. The dockerin repeat is the binding partner of the cohesin domain pfam00963. The cohesin-dockerin interaction is the crucial interaction for complex formation in the cellulosome. The dockerin repeats, each bearing homology to the EF-hand calcium-binding loop bind calcium.

Family89 Glycoside Hydrolase from Clostridium perfringens in complex with 2-acetamido-1,2-dideoxynojirmycin [Clostridium perfringens],2VCA_A Family 89 glycoside hydrolase from Clostridium perfringens in complex with beta-N-acetyl-D-glucosamine [Clostridium perfringens],2VCB_A Family 89 Glycoside Hydrolase from Clostridium perfringens in complex with PUGNAc [Clostridium perfringens],2VCC_A Family 89 Glycoside Hydrolase from Clostridium perfringens [Clostridium perfringens]

ChainA, Alpha-N-acetylglucosaminidase family protein [Clostridium perfringens ATCC 13124],7MFL_A Chain A, Alpha-N-acetylglucosaminidase family protein [Clostridium perfringens ATCC 13124]

CpGH89(E483Q, E601Q), from Clostridium perfringens, in complex with its substrate GlcNAc-alpha-1,4-galactose [Clostridium perfringens]

Crystalstructure of the human N-acetyl-alpha-glucosaminidase [Homo sapiens]

Thestructure of the family 32 CBM from C. perfringens NanJ in complex with galactose [Clostridium perfringens]

Alpha-N-acetylglucosaminidase OS=Arabidopsis thaliana OX=3702 GN=NAGLU PE=2 SV=1

Alpha-N-acetylglucosaminidase OS=Homo sapiens OX=9606 GN=NAGLU PE=1 SV=2

A type blood N-acetyl-alpha-D-galactosamine deacetylase OS=Flavonifractor plautii OX=292800 PE=1 SV=1

Sialidase OS=Clostridium septicum OX=1504 PE=3 SV=1