BglG family transcription antiterminator similar to Bacillus subtilis transcriptional regulator MtlR that positively regulates the expression of the mtlAFD operon, which is involved in the uptake and catabolism of mannitol
PTS_IIB_bgl_like: the PTS (phosphotransferase system) IIB domain of a family of sensory ...
400-484
5.67e-19
PTS_IIB_bgl_like: the PTS (phosphotransferase system) IIB domain of a family of sensory systems composed of a membrane-bound sugar-sensor (similar to BglF) and a transcription antiterminator (similar to BglG) which regulate expression of genes involved in sugar utilization. The domain architecture of the IIB-containing protein includes a region N-terminal to the IIB domain which is homologous to the BglG transcription antiterminator with an RNA-binding domain followed by two homologous domains, PRD1 and PRD2 (PTS Regulation Domains). C-terminal to the IIB domain is a domain similar to the PTS IIA domain. In this system, the BglG-like region and the IIB and IIA-like domains are all expressed together as a single multidomain protein. The IIB domain fold includes a central four-stranded parallel open twisted beta-sheet flanked by alpha-helices on both sides. The seven major PTS systems with this IIB fold include this sensory system with similarity to the bacterial bgl system, chitobiose/lichenan, ascorbate, lactose, galactitol, mannitol, and fructose systems.
Pssm-ID: 99910 Cd Length: 85 Bit Score: 81.78 E-value: 5.67e-19
PTS system, fructose subfamily, IIA component; 4.A.2 The PTS Fructose-Mannitol (Fru) Family ...
496-599
2.69e-11
PTS system, fructose subfamily, IIA component; 4.A.2 The PTS Fructose-Mannitol (Fru) Family Bacterial PTS transporters transport and concomitantly phosphorylate their sugar substrates, and typically consist of multiple subunits or protein domains. The Fru family is a large and complex family which includes several sequenced fructose and mannitol-specific permeases as well as several putative PTS permeases of unknown specificities. The fructose permeases of this family phosphorylate fructose on the 1-position. Those of family 4.6 phosphorylate fructose on the 6-position. The Fru family PTS systems typically have 3 domains, IIA, IIB and IIC, which may be found as 1 or more proteins. The fructose and mannitol transporters form separate phylogenetic clusters in this family. This model is specific for the IIA domain of the fructose PTS transporters. Also similar to the Enzyme IIA Fru subunits of the PTS, but included in TIGR01419 rather than this model, is enzyme IIA Ntr (nitrogen), also called PtsN, found in E. coli and other organisms, which may play a solely regulatory role. [Transport and binding proteins, Carbohydrates, organic alcohols, and acids, Signal transduction, PTS]
Pssm-ID: 273298 [Multi-domain] Cd Length: 129 Bit Score: 61.14 E-value: 2.69e-11
PTS_IIB_bgl_like: the PTS (phosphotransferase system) IIB domain of a family of sensory ...
400-484
5.67e-19
PTS_IIB_bgl_like: the PTS (phosphotransferase system) IIB domain of a family of sensory systems composed of a membrane-bound sugar-sensor (similar to BglF) and a transcription antiterminator (similar to BglG) which regulate expression of genes involved in sugar utilization. The domain architecture of the IIB-containing protein includes a region N-terminal to the IIB domain which is homologous to the BglG transcription antiterminator with an RNA-binding domain followed by two homologous domains, PRD1 and PRD2 (PTS Regulation Domains). C-terminal to the IIB domain is a domain similar to the PTS IIA domain. In this system, the BglG-like region and the IIB and IIA-like domains are all expressed together as a single multidomain protein. The IIB domain fold includes a central four-stranded parallel open twisted beta-sheet flanked by alpha-helices on both sides. The seven major PTS systems with this IIB fold include this sensory system with similarity to the bacterial bgl system, chitobiose/lichenan, ascorbate, lactose, galactitol, mannitol, and fructose systems.
Pssm-ID: 99910 Cd Length: 85 Bit Score: 81.78 E-value: 5.67e-19
PRD domain; The PRD domain (for PTS Regulation Domain), is the phosphorylatable regulatory ...
317-389
3.93e-16
PRD domain; The PRD domain (for PTS Regulation Domain), is the phosphorylatable regulatory domain found in bacterial transcriptional antiterminator such as BglG, SacY and LicT, as well as in activators such as MtlR and LevR. The PRD is phosphorylated on one or two conserved histidine residues. PRD-containing proteins are involved in the regulation of catabolic operons in Gram+ and Gram- bacteria and are often characterized by a short N-terminal effector domain that binds to either RNA (CAT-RBD for antiterminators pfam03123) or DNA (for activators), and a duplicated PRD module which is phosphorylated by the sugar phosphotransferase system (PTS) in response to the availability of carbon source. The phosphorylations modify the conformation and stability of the dimeric proteins and thereby the RNA- or DNA-binding activity of the effector domain. The structure of the LicT PRD domains has been solved in both the active (pdb:1h99) and inactive state (pdb:1tlv), revealing massive structural rearrangements upon activation.
Pssm-ID: 459973 [Multi-domain] Cd Length: 90 Bit Score: 73.83 E-value: 3.93e-16
PTS_IIA, PTS system, fructose/mannitol specific IIA subunit. The bacterial phosphoenolpyruvate: ...
497-632
3.73e-13
PTS_IIA, PTS system, fructose/mannitol specific IIA subunit. The bacterial phosphoenolpyruvate: sugar phosphotransferase system (PTS) is a multi-protein system involved in the regulation of a variety of metabolic and transcriptional processes. This family is one of four structurally and functionally distinct group IIA PTS system cytoplasmic enzymes, necessary for the uptake of carbohydrates across the cytoplasmic membrane and their phosphorylation.
Pssm-ID: 238129 [Multi-domain] Cd Length: 136 Bit Score: 66.82 E-value: 3.73e-13
PTS_IIB: subunit IIB of enzyme II (EII) is the central energy-coupling domain of the ...
403-481
1.11e-11
PTS_IIB: subunit IIB of enzyme II (EII) is the central energy-coupling domain of the phosphoenolpyruvate:carbohydrate phosphotransferase system (PTS). In the multienzyme PTS complex, EII is a carbohydrate-specific permease consisting of two cytoplasmic domains (IIA and IIB) and a transmembrane channel IIC domain. The IIB domain fold includes a central four-stranded parallel open twisted beta-sheet flanked by alpha-helices on both sides. The seven major PTS systems with this IIB fold include chitobiose/lichenan, ascorbate, lactose, galactitol, mannitol, fructose, and a sensory system with similarity to the bacterial bgl system. The PTS is found only in bacteria, where it catalyzes the transport and phosphorylation of numerous monosaccharides, disaccharides, polyols, amino sugars, and other sugar derivatives. The four proteins (domains) forming the PTS phosphorylation cascade (EI, HPr, EIIA, and EIIB), can phosphorylate or interact with numerous non-PTS proteins thereby regulating their activity.
Pssm-ID: 99904 Cd Length: 84 Bit Score: 61.12 E-value: 1.11e-11
PTS system, fructose subfamily, IIA component; 4.A.2 The PTS Fructose-Mannitol (Fru) Family ...
496-599
2.69e-11
PTS system, fructose subfamily, IIA component; 4.A.2 The PTS Fructose-Mannitol (Fru) Family Bacterial PTS transporters transport and concomitantly phosphorylate their sugar substrates, and typically consist of multiple subunits or protein domains. The Fru family is a large and complex family which includes several sequenced fructose and mannitol-specific permeases as well as several putative PTS permeases of unknown specificities. The fructose permeases of this family phosphorylate fructose on the 1-position. Those of family 4.6 phosphorylate fructose on the 6-position. The Fru family PTS systems typically have 3 domains, IIA, IIB and IIC, which may be found as 1 or more proteins. The fructose and mannitol transporters form separate phylogenetic clusters in this family. This model is specific for the IIA domain of the fructose PTS transporters. Also similar to the Enzyme IIA Fru subunits of the PTS, but included in TIGR01419 rather than this model, is enzyme IIA Ntr (nitrogen), also called PtsN, found in E. coli and other organisms, which may play a solely regulatory role. [Transport and binding proteins, Carbohydrates, organic alcohols, and acids, Signal transduction, PTS]
Pssm-ID: 273298 [Multi-domain] Cd Length: 129 Bit Score: 61.14 E-value: 2.69e-11
PTS system, Lactose/Cellobiose specific IIB subunit; The bacterial phosphoenolpyruvate: sugar ...
403-480
2.54e-04
PTS system, Lactose/Cellobiose specific IIB subunit; The bacterial phosphoenolpyruvate: sugar phosphotransferase system (PTS) is a multi-protein system involved in the regulation of a variety of metabolic and transcriptional processes. The lactose/cellobiose-specific family are one of four structurally and functionally distinct group IIB PTS system cytoplasmic enzymes. The fold of IIB cellobiose shows similar structure to mammalian tyrosine phosphatases. This family also contains the fructose specific IIB subunit.
Pssm-ID: 396744 Cd Length: 92 Bit Score: 40.39 E-value: 2.54e-04
M protein trans-acting positive regulator (MGA) HTH domain; Mga is a DNA-binding protein that ...
5-41
6.76e-03
M protein trans-acting positive regulator (MGA) HTH domain; Mga is a DNA-binding protein that activates the expression of several important virulence genes in group A streptococcus in response to changing environmental conditions.
Pssm-ID: 311953 [Multi-domain] Cd Length: 59 Bit Score: 35.28 E-value: 6.76e-03
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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