cd18614, GH130, Glycosyl hydrolase family 130; uncharacterized. This subfamily contains glycosyl hydrolase family 130 (GH130) proteins, as classified by the carbohydrate-active enzymes database (CAZY), most of which are as yet uncharacterized. GH130 enzymes are phosphorylases and hydrolases for beta-mannosides, and include beta-1,4-mannosylglucose phosphorylase (EC 2.4.1.281), beta-1,4-mannooligosaccharide phosphorylase (EC 2.4.1.319), beta-1,4-mannosyl-N-acetyl-glucosamine phosphorylase (EC 2.4.1.320), beta-1,2-mannobiose phosphorylase (EC 2.4.1.-), beta-1,2-oligomannan phosphorylase (EC 2.4.1.-) and beta-1,2-mannosidase (EC 3.2.1.-). They possess 5-bladed beta-propeller domains similar to families 32, 43, 62, 68, 117 (GH32, GH43, GH62, GH68, GH117). GH130 enzymes are involved in the bacterial utilization of mannans or N-linked glycans. Beta-1,4-mannosylglucose phosphorylase is involved in degradation of beta-1,4-D-mannosyl-N-acetyl-D-glucosamine linkages in the core of N-glycans; it produces alpha-mannose 1-phosphate and glucose from 4-O-beta-D-mannosyl-D-glucose and inorganic phosphate, using a critical catalytic Asp as a proton donor.
cd14748, PBP2_UgpB, The periplasmic-binding component of ABC transport system specific for sn-glycerol-3-phosphate; possesses type 2 periplasmic binding fold. This group includes the periplasmic component of an ABC transport system specific for sn-glycerol-3-phosphate (G3P) and closely related proteins from archaea and bacteria. Under phophate starvation conditions, Escherichia coli can utilize G3P as phosphate source when exclusively imported by an ATP-binding cassette (ABC) transporter composed of the periplasmic binding protein, UgpB, the transmembrane subunits, UgpA and UgpE, and a homodimer of the nucleotide binding subunit, UgpC. Members of this group belong to the type 2 periplasmic-binding fold superfamily. PBP2 proteins are comprised of two globular subdomains connected by a flexible hinge and bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. The majority of PBP2 proteins function in the uptake of small soluble substrates in eubacteria and archaea. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.
cd06553, ASCH_Ef3133_like, ASC-1 homology domain, subfamily similar to Enterococcus faecalis Ef3133. The ASCH domain, a small beta-barrel domain found in all three kingdoms of life, resembles the RNA-binding PUA domain and may also interact with RNA. ASCH has been proposed to function as an RNA-binding domain during coactivation, RNA-processing and the regulation of prokaryotic translation.
TIGR03930, WXG100_ESAT6, WXG100 family type VII secretion target. Members of this protein family include secretion targets for the two main variants of type VII secretion systems (T7SS), one found in the Actinobacteria, one found in the Firmicutes. This model was derived through iteration from pfam06013. The best characterized member of this family is ESAT-6 from Mycobacterium tuberculosis. Members of this family usually are ~100 amino acids in length but occasionally have a long C-terminal extension.
TIGR03928, T7_EssCb_Firm, type VII secretion protein EssC, C-terminal domain. This model describes the C-terminal domain, or longer subunit, of the Firmicutes type VII secretion protein EssC. This protein (homologous to EccC in Actinobacteria) and the WXG100 target proteins are the only homologous parts of type VII secretion between Firmicutes and Actinobacteria. [Protein fate, Protein and peptide secretion and trafficking].
pfam03496, ADPrib_exo_Tox, ADP-ribosyltransferase exoenzyme. This is a family of bacterial and viral bi-glutamic acid ADP-ribosyltransferases, where, in Aeromonas salmonicida AexT, E403 is the catalytic residue and E401 contributes to the transfer of ADP-ribose to the target protein. In clostridial species it is actin that is being ADP-ribosylated; this result is lethal and dermonecrotic in infected mammals.
pfam06013, WXG100, Proteins of 100 residues with WXG. ESAT-6 is a small protein appears to be of fundamental importance in virulence and protective immunity in Mycobacterium tuberculosis. homologs have been detected in other Gram-positive bacterial species. It may represent a novel secretion system potentially driven by the pfam01580 domains in the YukA-like proteins.
COG1249, Lpd, Pyruvate/2-oxoglutarate dehydrogenase complex, dihydrolipoamide dehydrogenase (E3) component, and related enzymes [Energy production and conversion].
pfam15598, Imm61, Immunity protein 61. A predicted immunity protein with an alpha+beta fold and a conserved arginine. Proteins containing this domain are present in bacterial polymorphic toxin systems as an immediate gene neighbor of the toxin gene, which usually contains toxin domains of the Ntox40 family.
pfam12146, Hydrolase_4, Serine aminopeptidase, S33. This domain is found in bacteria and eukaryotes and is approximately 110 amino acids in length. It is found in association with pfam00561. The majority of the members in this family carry the exopeptidase active-site residues of Ser-122, Asp-239 and His-269 as in UniProtKB:Q7ZWC2.
cd06311, PBP1_ABC_sugar_binding-like, periplasmic sugar-binding domain of uncharacterized ABC-type transport systems. Periplasmic sugar-binding domain of uncharacterized ABC-type transport systems that share homology with a family of pentose/hexose sugar-binding proteins of the type 1 periplasmic binding protein superfamily, which consists of two domains connected by a three-stranded hinge. The substrate specificity of this group is not known, but it is predicted to be involved in the transport of sugar-containing molecules and chemotaxis.
pfam07077, DUF1345, Protein of unknown function (DUF1345). This family consists of several hypothetical bacterial proteins of around 230 residues in length. The function of this family is unknown.
pfam01555, N6_N4_Mtase, DNA methylase. Members of this family are DNA methylases. The family contains both N-4 cytosine-specific DNA methylases and N-6 Adenine-specific DNA methylases.
