Non-viral sialidases. Sialidases or neuraminidases function to bind and hydrolyze terminal sialic acid residues from various glycoconjugates, they play vital roles in pathogenesis, bacterial nutrition and cellular interactions. They have a six-bladed, beta-propeller fold with the non-viral sialidases containing 2-5 Asp-box motifs (most commonly Ser/Thr-X-Asp-[X]-Gly-X-Thr- Trp/Phe). This CD includes eubacterial and eukaryotic sialidases.

BNR repeat-like domain. This family of proteins contains BNR-like repeats suggesting these proteins may act as sialidases.

Neuraminidase (sialidase) [Carbohydrate transport and metabolism, Cell wall/membrane/envelope biogenesis].

Secretion system C-terminal sorting domain. Species that include Porphyromonas gingivalis, Fibrobacter succinogenes, Flavobacterium johnsoniae, Cytophaga hutchinsonii, Gramella forsetii, Prevotella intermedia, and Salinibacter ruber have on average twenty or more copies of this C-terminal domain, associated with sorting to the outer membrane and covalent modification. This domain targets proteins to type IX secretion systems and is secreted then cleaved off by a C-terminal signal peptidease. Based on similarity to other families it is likely that this domain adopts an immunoglobulin like fold.

Por secretion system C-terminal sorting domain. Species that include Porphyromonas gingivalis, Fibrobacter succinogenes, Flavobacterium johnsoniae, Cytophaga hutchinsonii, Gramella forsetii, Prevotella intermedia, and Salinibacter ruber average twenty or more copies of a C-terminal domain, represented by this model, associated with sorting to the outer membrane and covalent modification.

Sialidase[Micromonospora viridifaciens],1EUS_A Sialidase Complexed With 2-Deoxy-2,3-Dehydro-N- Acetylneuraminic Acid [Micromonospora viridifaciens]

Contributionof the Active Site Aspartic Acid to Catalysis in the Bacterial Neuraminidase from Micromonospora viridifaciens. [Micromonospora viridifaciens],1W8O_A Contribution of the Active Site Aspartic Acid to Catalysis in the Bacterial Neuraminidase from Micromonospora viridifaciens [Micromonospora viridifaciens]

Sialidase,Large 68kd Form, Complexed With Galactose [Micromonospora viridifaciens],1EUU_A Sialidase Or Neuraminidase, Large 68kd Form [Micromonospora viridifaciens]

Mutagenesisof the Nucleophilic Tyrosine in a Bacterial Sialidase to Phenylalanine. [Micromonospora viridifaciens],1WCQ_B Mutagenesis of the Nucleophilic Tyrosine in a Bacterial Sialidase to Phenylalanine. [Micromonospora viridifaciens],1WCQ_C Mutagenesis of the Nucleophilic Tyrosine in a Bacterial Sialidase to Phenylalanine. [Micromonospora viridifaciens]

Galactoserecognition by the carbohydrate-binding module of a bacterial sialidase. [Micromonospora viridifaciens],2BZD_B Galactose recognition by the carbohydrate-binding module of a bacterial sialidase. [Micromonospora viridifaciens],2BZD_C Galactose recognition by the carbohydrate-binding module of a bacterial sialidase. [Micromonospora viridifaciens]

Sialidase OS=Micromonospora viridifaciens OX=1881 GN=nedA PE=1 SV=1

Sialidase OS=Bacteroides fragilis (strain YCH46) OX=295405 GN=nanH PE=3 SV=2

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

Sialidase OS=Paeniclostridium sordellii OX=1505 PE=1 SV=1

Sialidase OS=Clostridium perfringens OX=1502 GN=nanH PE=1 SV=1