first PDC (PhoQ/DcuS/CitA) domain of methyl-accepting chemotaxis proteins, diguanylate-cyclase ...
63-220
1.37e-04
first PDC (PhoQ/DcuS/CitA) domain of methyl-accepting chemotaxis proteins, diguanylate-cyclase and similar domains; Histidine kinase (HK) receptors are part of two-component systems (TCS) in bacteria that play a critical role for sensing and adapting to environmental changes. Typically, HK receptors contain an extracellular sensing domain flanked by two transmembrane helices, an intracellular dimerization histidine phosphorylation domain (DHp), and a C-terminal kinase domain, with many variations on this theme. HK receptors in this family contain double PDC (PhoQ/DcuS/CitA) sensor domains. Signals detected by the sensor domain are transmitted through DHp to the kinase domain, resulting in the phosphorylation of a conserved histidine residue in DHp; phosphotransfer to a conserved aspartate in its cognate response regulator (RR) follows, which leads to the activation of genes for downstream cellular responses. The HK family includes not just histidine kinase receptors but also sensors for chemotaxis proteins and diguanylate cyclase receptors, implying a combinatorial molecular evolution.
:
Pssm-ID: 350341 [Multi-domain] Cd Length: 125 Bit Score: 42.55 E-value: 1.37e-04
EAL domain. This domain is found in diverse bacterial signaling proteins. It is called EAL ...
596-837
2.99e-101
EAL domain. This domain is found in diverse bacterial signaling proteins. It is called EAL after its conserved residues and is also known as domain of unknown function 2 (DUF2). The EAL domain has been shown to stimulate degradation of a second messenger, cyclic di-GMP, and is a good candidate for a diguanylate phosphodiesterase function. Together with the GGDEF domain, EAL might be involved in regulating cell surface adhesiveness in bacteria.
Pssm-ID: 238923 [Multi-domain] Cd Length: 240 Bit Score: 314.48 E-value: 2.99e-101
EAL domain; This domain is found in diverse bacterial signaling proteins. It is called EAL ...
599-832
7.13e-79
EAL domain; This domain is found in diverse bacterial signaling proteins. It is called EAL after its conserved residues. The EAL domain is a good candidate for a diguanylate phosphodiesterase function. The domain contains many conserved acidic residues that could participate in metal binding and might form the phosphodiesterase active site.
Pssm-ID: 425752 [Multi-domain] Cd Length: 235 Bit Score: 254.93 E-value: 7.13e-79
diguanylate cyclase (GGDEF) domain; The GGDEF domain is named for the motif GG[DE]EF shared by ...
425-572
1.80e-17
diguanylate cyclase (GGDEF) domain; The GGDEF domain is named for the motif GG[DE]EF shared by many proteins carrying the domain. There is evidence that the domain has diguanylate cyclase activity. Several proteins carrying this domain also carry domains with functions relating to environmental sensing. These include PleD, a response regulator protein involved in the swarmer-to-stalked cell transition in Caulobacter crescentus, and FixL, a heme-containing oxygen sensor protein. [Regulatory functions, Small molecule interactions, Signal transduction, Other]
Pssm-ID: 272984 [Multi-domain] Cd Length: 165 Bit Score: 80.46 E-value: 1.80e-17
first PDC (PhoQ/DcuS/CitA) domain of methyl-accepting chemotaxis proteins and similar domains; ...
93-220
1.98e-12
first PDC (PhoQ/DcuS/CitA) domain of methyl-accepting chemotaxis proteins and similar domains; Members of this subfamily display varying domain architectures but all contain double PDC (PhoQ/DcuS/CitA) sensor domains. This model represents the first PDC domain of Methyl-accepting chemotaxis proteins (MCPs), Histidine kinases (HKs), and other similar domains. Many members contain both HAMP (HK, Adenylyl cyclase, MCP, and Phosphatase) and MCP domains, which are signalling domains that interact with protein partners to relay a signal. MCPs are part of a transmembrane protein complex that controls bacterial chemotaxis. HK receptors are part of two-component systems (TCS) in bacteria that play a critical role for sensing and adapting to environmental changes. Typically, HK receptors contain an extracellular sensing domain flanked by two transmembrane helices, an intracellular dimerization histidine phosphorylation domain (DHp), and a C-terminal kinase domain, with many variations on this theme. In the case of HKs, signals detected by the sensor domain are transmitted through DHp to the kinase domain, resulting in the phosphorylation of a conserved histidine residue in DHp; phosphotransfer to a conserved aspartate in its cognate response regulator (RR) follows, which leads to the activation of genes for downstream cellular responses.
Pssm-ID: 350338 Cd Length: 139 Bit Score: 65.24 E-value: 1.98e-12
Cache domain; Double cache domain 1 covers the last three strands from the membrane distal ...
153-297
7.53e-09
Cache domain; Double cache domain 1 covers the last three strands from the membrane distal PAS-like domain, the first two strands of the membrane proximal domain, and the connecting elements between the two domains. This domain when present in chemoreceptors recognize several signals such as proteinogenic amino acids, GABA, Histamine and polyamines, decanoic acid, Autoinducer-2, purine derivatives, quaternary amines, citrate and taurine, among others. When associated with histidine kinases, it recognizes C3/C4-dicarboxylic acids, Spermine, guanosine and Autoinducer-2 (Mantilla et al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1 https://doi.org/10.1093/femsre/fuab043).
Pssm-ID: 460673 [Multi-domain] Cd Length: 237 Bit Score: 57.35 E-value: 7.53e-09
Histidine kinase, Adenylyl cyclase, Methyl-accepting protein, and Phosphatase (HAMP) domain; HAMP is a signaling domain which occurs in a wide variety of signaling proteins, many of which are bacterial. The HAMP domain consists of two alpha helices connected by an extended linker. The structure of the Af1503 HAMP dimer from Archaeoglobus fulgidus has been solved using nuclear magnetic resonance, revealing a parallel four-helix bundle; this structure has been confirmed by cross-linking analysis of HAMP domains from the Escherichia coli aerotaxis receptor Aer. It has been suggested that the four-helix arrangement can rotate between the unusually packed conformation observed in the NMR structure and a canonical coiled-coil arrangement. Such rotation may coincide with signal transduction, but a common mechanism by which HAMP domains relay a variety of input signals has yet to be established.
Pssm-ID: 381743 [Multi-domain] Cd Length: 45 Bit Score: 45.13 E-value: 1.95e-06
first PDC (PhoQ/DcuS/CitA) domain of methyl-accepting chemotaxis proteins, diguanylate-cyclase ...
63-220
1.37e-04
first PDC (PhoQ/DcuS/CitA) domain of methyl-accepting chemotaxis proteins, diguanylate-cyclase and similar domains; Histidine kinase (HK) receptors are part of two-component systems (TCS) in bacteria that play a critical role for sensing and adapting to environmental changes. Typically, HK receptors contain an extracellular sensing domain flanked by two transmembrane helices, an intracellular dimerization histidine phosphorylation domain (DHp), and a C-terminal kinase domain, with many variations on this theme. HK receptors in this family contain double PDC (PhoQ/DcuS/CitA) sensor domains. Signals detected by the sensor domain are transmitted through DHp to the kinase domain, resulting in the phosphorylation of a conserved histidine residue in DHp; phosphotransfer to a conserved aspartate in its cognate response regulator (RR) follows, which leads to the activation of genes for downstream cellular responses. The HK family includes not just histidine kinase receptors but also sensors for chemotaxis proteins and diguanylate cyclase receptors, implying a combinatorial molecular evolution.
Pssm-ID: 350341 [Multi-domain] Cd Length: 125 Bit Score: 42.55 E-value: 1.37e-04
EAL domain. This domain is found in diverse bacterial signaling proteins. It is called EAL ...
596-837
2.99e-101
EAL domain. This domain is found in diverse bacterial signaling proteins. It is called EAL after its conserved residues and is also known as domain of unknown function 2 (DUF2). The EAL domain has been shown to stimulate degradation of a second messenger, cyclic di-GMP, and is a good candidate for a diguanylate phosphodiesterase function. Together with the GGDEF domain, EAL might be involved in regulating cell surface adhesiveness in bacteria.
Pssm-ID: 238923 [Multi-domain] Cd Length: 240 Bit Score: 314.48 E-value: 2.99e-101
EAL domain; This domain is found in diverse bacterial signaling proteins. It is called EAL ...
599-832
7.13e-79
EAL domain; This domain is found in diverse bacterial signaling proteins. It is called EAL after its conserved residues. The EAL domain is a good candidate for a diguanylate phosphodiesterase function. The domain contains many conserved acidic residues that could participate in metal binding and might form the phosphodiesterase active site.
Pssm-ID: 425752 [Multi-domain] Cd Length: 235 Bit Score: 254.93 E-value: 7.13e-79
Diguanylate-cyclase (DGC) or GGDEF domain; Diguanylate-cyclase (DGC) or GGDEF domain: ...
427-572
3.65e-34
Diguanylate-cyclase (DGC) or GGDEF domain; Diguanylate-cyclase (DGC) or GGDEF domain: Originally named after a conserved residue pattern, and initially described as a domain of unknown function 1 (DUF1). This domain is widely present in bacteria, linked to a wide range of non-homologous domains in a variety of cell signaling proteins. The domain shows homology to the adenylyl cyclase catalytic domain. This correlates with the functional information available on two GGDEF-containing proteins, namely diguanylate cyclase and phosphodiesterase A of Acetobacter xylinum, both of which regulate the turnover of cyclic diguanosine monophosphate. Together with the EAL domain, GGDEF might be involved in regulating cell surface adhesion in bacteria.
Pssm-ID: 143635 [Multi-domain] Cd Length: 158 Bit Score: 128.06 E-value: 3.65e-34
Diguanylate cyclase, GGDEF domain; This domain is found linked to a wide range of ...
428-574
2.22e-26
Diguanylate cyclase, GGDEF domain; This domain is found linked to a wide range of non-homologous domains in a variety of bacteria. It has been shown to be homologous to the adenylyl cyclase catalytic domain and has diguanylate cyclase activity. This observation correlates with the functional information available on two GGDEF-containing proteins, namely diguanylate cyclase and phosphodiesterase A of Acetobacter xylinum, both of which regulate the turnover of cyclic diguanosine monophosphate. In the WspR protein of Pseudomonas aeruginosa, the GGDEF domain acts as a diguanylate cyclase, PDB:3bre, when the whole molecule appears to form a tetramer consisting of two symmetrically-related dimers representing a biological unit. The active site is the GGD/EF motif, buried in the structure, and the cyclic dimeric guanosine monophosphate (c-di-GMP) bind to the inhibitory-motif RxxD on the surface. The enzyme thus catalyzes the cyclization of two guanosine triphosphate (GTP) molecules to one c-di-GMP molecule.
Pssm-ID: 425976 [Multi-domain] Cd Length: 160 Bit Score: 105.80 E-value: 2.22e-26
diguanylate cyclase (GGDEF) domain; The GGDEF domain is named for the motif GG[DE]EF shared by ...
425-572
1.80e-17
diguanylate cyclase (GGDEF) domain; The GGDEF domain is named for the motif GG[DE]EF shared by many proteins carrying the domain. There is evidence that the domain has diguanylate cyclase activity. Several proteins carrying this domain also carry domains with functions relating to environmental sensing. These include PleD, a response regulator protein involved in the swarmer-to-stalked cell transition in Caulobacter crescentus, and FixL, a heme-containing oxygen sensor protein. [Regulatory functions, Small molecule interactions, Signal transduction, Other]
Pssm-ID: 272984 [Multi-domain] Cd Length: 165 Bit Score: 80.46 E-value: 1.80e-17
first PDC (PhoQ/DcuS/CitA) domain of methyl-accepting chemotaxis proteins and similar domains; ...
93-220
1.98e-12
first PDC (PhoQ/DcuS/CitA) domain of methyl-accepting chemotaxis proteins and similar domains; Members of this subfamily display varying domain architectures but all contain double PDC (PhoQ/DcuS/CitA) sensor domains. This model represents the first PDC domain of Methyl-accepting chemotaxis proteins (MCPs), Histidine kinases (HKs), and other similar domains. Many members contain both HAMP (HK, Adenylyl cyclase, MCP, and Phosphatase) and MCP domains, which are signalling domains that interact with protein partners to relay a signal. MCPs are part of a transmembrane protein complex that controls bacterial chemotaxis. HK receptors are part of two-component systems (TCS) in bacteria that play a critical role for sensing and adapting to environmental changes. Typically, HK receptors contain an extracellular sensing domain flanked by two transmembrane helices, an intracellular dimerization histidine phosphorylation domain (DHp), and a C-terminal kinase domain, with many variations on this theme. In the case of HKs, signals detected by the sensor domain are transmitted through DHp to the kinase domain, resulting in the phosphorylation of a conserved histidine residue in DHp; phosphotransfer to a conserved aspartate in its cognate response regulator (RR) follows, which leads to the activation of genes for downstream cellular responses.
Pssm-ID: 350338 Cd Length: 139 Bit Score: 65.24 E-value: 1.98e-12
Cache domain; Double cache domain 1 covers the last three strands from the membrane distal ...
153-297
7.53e-09
Cache domain; Double cache domain 1 covers the last three strands from the membrane distal PAS-like domain, the first two strands of the membrane proximal domain, and the connecting elements between the two domains. This domain when present in chemoreceptors recognize several signals such as proteinogenic amino acids, GABA, Histamine and polyamines, decanoic acid, Autoinducer-2, purine derivatives, quaternary amines, citrate and taurine, among others. When associated with histidine kinases, it recognizes C3/C4-dicarboxylic acids, Spermine, guanosine and Autoinducer-2 (Mantilla et al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1 https://doi.org/10.1093/femsre/fuab043).
Pssm-ID: 460673 [Multi-domain] Cd Length: 237 Bit Score: 57.35 E-value: 7.53e-09
Histidine kinase, Adenylyl cyclase, Methyl-accepting protein, and Phosphatase (HAMP) domain; HAMP is a signaling domain which occurs in a wide variety of signaling proteins, many of which are bacterial. The HAMP domain consists of two alpha helices connected by an extended linker. The structure of the Af1503 HAMP dimer from Archaeoglobus fulgidus has been solved using nuclear magnetic resonance, revealing a parallel four-helix bundle; this structure has been confirmed by cross-linking analysis of HAMP domains from the Escherichia coli aerotaxis receptor Aer. It has been suggested that the four-helix arrangement can rotate between the unusually packed conformation observed in the NMR structure and a canonical coiled-coil arrangement. Such rotation may coincide with signal transduction, but a common mechanism by which HAMP domains relay a variety of input signals has yet to be established.
Pssm-ID: 381743 [Multi-domain] Cd Length: 45 Bit Score: 45.13 E-value: 1.95e-06
Two-component response regulator, PleD family, consists of two REC domains and a diguanylate ...
495-551
9.04e-05
Two-component response regulator, PleD family, consists of two REC domains and a diguanylate cyclase (GGDEF) domain [Signal transduction mechanisms, Transcription];
Pssm-ID: 442920 [Multi-domain] Cd Length: 179 Bit Score: 44.13 E-value: 9.04e-05
first PDC (PhoQ/DcuS/CitA) domain of methyl-accepting chemotaxis proteins, diguanylate-cyclase ...
63-220
1.37e-04
first PDC (PhoQ/DcuS/CitA) domain of methyl-accepting chemotaxis proteins, diguanylate-cyclase and similar domains; Histidine kinase (HK) receptors are part of two-component systems (TCS) in bacteria that play a critical role for sensing and adapting to environmental changes. Typically, HK receptors contain an extracellular sensing domain flanked by two transmembrane helices, an intracellular dimerization histidine phosphorylation domain (DHp), and a C-terminal kinase domain, with many variations on this theme. HK receptors in this family contain double PDC (PhoQ/DcuS/CitA) sensor domains. Signals detected by the sensor domain are transmitted through DHp to the kinase domain, resulting in the phosphorylation of a conserved histidine residue in DHp; phosphotransfer to a conserved aspartate in its cognate response regulator (RR) follows, which leads to the activation of genes for downstream cellular responses. The HK family includes not just histidine kinase receptors but also sensors for chemotaxis proteins and diguanylate cyclase receptors, implying a combinatorial molecular evolution.
Pssm-ID: 350341 [Multi-domain] Cd Length: 125 Bit Score: 42.55 E-value: 1.37e-04
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.
of the residues that compose this conserved feature have been mapped to the query sequence.
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