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Conserved domains on  [gi|17563168|ref|NP_504893|]
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7TM GPCR serpentine receptor class x (Srx) domain-containing protein [Caenorhabditis elegans]

Protein Classification

G protein-coupled receptor family protein( domain architecture ID 705710)

G protein-coupled receptor family protein is a seven-transmembrane G protein-coupled receptor (7TM-GPCR) family protein which typically transmits an extracellular signal into the cell by the conformational rearrangement of the 7TM helices and by the subsequent binding and activation of an intracellular heterotrimeric G protein; GPCR ligands include light-sensitive compounds, odors, pheromones, hormones, and neurotransmitters

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
7tm_GPCRs super family cl28897
seven-transmembrane G protein-coupled receptor superfamily; This hierarchical evolutionary ...
36-252 2.55e-06

seven-transmembrane G protein-coupled receptor superfamily; This hierarchical evolutionary model represents the seven-transmembrane (7TM) receptors, often referred to as G protein-coupled receptors (GPCRs), which transmit physiological signals from the outside of the cell to the inside via G proteins. GPCRs constitute the largest known superfamily of transmembrane receptors across the three kingdoms of life that respond to a wide variety of extracellular stimuli including peptides, lipids, neurotransmitters, amino acids, hormones, and sensory stimuli such as light, smell and taste. All GPCRs share a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. However, some 7TM receptors, such as the type 1 microbial rhodopsins, do not activate G proteins. Based on sequence similarity, GPCRs can be divided into six major classes: class A (the rhodopsin-like family), class B (the Methuselah-like, adhesion and secretin-like receptor family), class C (the metabotropic glutamate receptor family), class D (the fungal mating pheromone receptors), class E (the cAMP receptor family), and class F (the frizzled/smoothened receptor family). Nearly 800 human GPCR genes have been identified and are involved essentially in all major physiological processes. Approximately 40% of clinically marketed drugs mediate their effects through modulation of GPCR function for the treatment of a variety of human diseases including bacterial infections.


The actual alignment was detected with superfamily member pfam10328:

Pssm-ID: 475119  Cd Length: 262  Bit Score: 47.98  E-value: 2.55e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 17563168    36 SRKSSIYVIAFFNIISDLLQLFYLCFYFSLSIIIDQYAIagdKVGRLSVFFGFIFLSGWFMENLLQPTMAINRFLVITF- 114
Cdd:pfam10328  23 SLKNSFGILCLSQAIGNAIICLIFLFYVVPMTLFQNSFL---PEWLNSHIIGLIAMGLYEISPLSHLLIALNRFCAVFFp 99
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 17563168   115 -NNHNIFTFNKTMLMMTVLISAALFSAACAqYLFPCCVFVIDYTVMALELVTINGVHSYTNSMFLVYDSICTSISIFCYI 193
Cdd:pfam10328 100 lKYEKIFSIKNTKIIIIFIWIVSIIFCTVF-YEPEGCHFYYNPETLTWSFEDTPCCDFITWYLDFYKNLSLVIITLFLNL 178
                         170       180       190       200       210       220
                  ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 17563168   194 GVFISIRNSNKK--VSTQIQKQRRKQEIRYLLQFMFTSVFYITTWVIFEILQYIIPDKKFQ 252
Cdd:pfam10328 179 LTAIKLRVSKKKsnTSSSESKRRRKREINFFKQTCFQDLLFLIDLVNYYIIAPLSDNRWFQ 239
 
Name Accession Description Interval E-value
7TM_GPCR_Srx pfam10328
Serpentine type 7TM GPCR chemoreceptor Srx; Chemoreception is mediated in Caenorhabditis ...
36-252 2.55e-06

Serpentine type 7TM GPCR chemoreceptor Srx; Chemoreception is mediated in Caenorhabditis elegans by members of the seven-transmembrane G-protein-coupled receptor class (7TM GPCRs) of proteins which are of the serpentine type. Srx is part of the Srg superfamily of chemoreceptors. Chemoperception is one of the central senses of soil nematodes like C. elegans which are otherwise 'blind' and 'deaf'.


Pssm-ID: 431215  Cd Length: 262  Bit Score: 47.98  E-value: 2.55e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 17563168    36 SRKSSIYVIAFFNIISDLLQLFYLCFYFSLSIIIDQYAIagdKVGRLSVFFGFIFLSGWFMENLLQPTMAINRFLVITF- 114
Cdd:pfam10328  23 SLKNSFGILCLSQAIGNAIICLIFLFYVVPMTLFQNSFL---PEWLNSHIIGLIAMGLYEISPLSHLLIALNRFCAVFFp 99
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 17563168   115 -NNHNIFTFNKTMLMMTVLISAALFSAACAqYLFPCCVFVIDYTVMALELVTINGVHSYTNSMFLVYDSICTSISIFCYI 193
Cdd:pfam10328 100 lKYEKIFSIKNTKIIIIFIWIVSIIFCTVF-YEPEGCHFYYNPETLTWSFEDTPCCDFITWYLDFYKNLSLVIITLFLNL 178
                         170       180       190       200       210       220
                  ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 17563168   194 GVFISIRNSNKK--VSTQIQKQRRKQEIRYLLQFMFTSVFYITTWVIFEILQYIIPDKKFQ 252
Cdd:pfam10328 179 LTAIKLRVSKKKsnTSSSESKRRRKREINFFKQTCFQDLLFLIDLVNYYIIAPLSDNRWFQ 239
7tm_classA_rhodopsin-like cd00637
rhodopsin receptor-like class A family of the seven-transmembrane G protein-coupled receptor ...
50-276 1.65e-05

rhodopsin receptor-like class A family of the seven-transmembrane G protein-coupled receptor superfamily; Class A rhodopsin-like receptors constitute about 90% of all GPCRs. The class A GPCRs include the light-sensitive rhodopsin as well as receptors for biogenic amines, lipids, nucleotides, odorants, peptide hormones, and a variety of other ligands. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Based on sequence similarity, GPCRs can be divided into six major classes: class A (rhodopsin-like family), class B (Methuselah-like, adhesion and secretin-like receptor family), class C (metabotropic glutamate receptor family), class D (fungal mating pheromone receptors), class E (cAMP receptor family), and class F (frizzled/smoothened receptor family). Nearly 800 human GPCR genes have been identified and are involved essentially in all major physiological processes. Approximately 40% of clinically marketed drugs mediate their effects through modulation of GPCR function for the treatment of a variety of human diseases including bacterial infections.


Pssm-ID: 410626 [Multi-domain]  Cd Length: 275  Bit Score: 45.36  E-value: 1.65e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 17563168  50 ISDLLQLFyLCFYFSLSIIIDQYAIAGDKVGRLSVFFGFIFLSGwFMENLLqpTMAINRFLVITFNNHNIFTFNKTMLMM 129
Cdd:cd00637  42 VADLLVGL-LVIPFSLVSLLLGRWWFGDALCKLLGFLQSVSLLA-SILTLT--AISVDRYLAIVHPLRYRRRFTRRRAKL 117
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 17563168 130 TVLISAALFSAACAQYLFPCCVFVID-YTVMALELVTINGVHSYTNSMFLVYDSICTSISIFCYIGVFISIRNSNKKV-- 206
Cdd:cd00637 118 LIALIWLLSLLLALPPLLGWGVYDYGgYCCCCLCWPDLTLSKAYTIFLFVLLFLLPLLVIIVCYVRIFRKLRRHRRRIrs 197
                       170       180       190       200       210       220       230
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 17563168 207 --STQIQKQRRKQEIRYLLQFMFTSVFYITTW---VIFEILQYIIPDKKFQPHAIIPA---MIILNCSSNSVIFLSIN 276
Cdd:cd00637 198 ssSNSSRRRRRRRERKVTKTLLIVVVVFLLCWlpyFILLLLDVFGPDPSPLPRILYFLallLAYLNSAINPIIYAFFN 275
 
Name Accession Description Interval E-value
7TM_GPCR_Srx pfam10328
Serpentine type 7TM GPCR chemoreceptor Srx; Chemoreception is mediated in Caenorhabditis ...
36-252 2.55e-06

Serpentine type 7TM GPCR chemoreceptor Srx; Chemoreception is mediated in Caenorhabditis elegans by members of the seven-transmembrane G-protein-coupled receptor class (7TM GPCRs) of proteins which are of the serpentine type. Srx is part of the Srg superfamily of chemoreceptors. Chemoperception is one of the central senses of soil nematodes like C. elegans which are otherwise 'blind' and 'deaf'.


Pssm-ID: 431215  Cd Length: 262  Bit Score: 47.98  E-value: 2.55e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 17563168    36 SRKSSIYVIAFFNIISDLLQLFYLCFYFSLSIIIDQYAIagdKVGRLSVFFGFIFLSGWFMENLLQPTMAINRFLVITF- 114
Cdd:pfam10328  23 SLKNSFGILCLSQAIGNAIICLIFLFYVVPMTLFQNSFL---PEWLNSHIIGLIAMGLYEISPLSHLLIALNRFCAVFFp 99
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 17563168   115 -NNHNIFTFNKTMLMMTVLISAALFSAACAqYLFPCCVFVIDYTVMALELVTINGVHSYTNSMFLVYDSICTSISIFCYI 193
Cdd:pfam10328 100 lKYEKIFSIKNTKIIIIFIWIVSIIFCTVF-YEPEGCHFYYNPETLTWSFEDTPCCDFITWYLDFYKNLSLVIITLFLNL 178
                         170       180       190       200       210       220
                  ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 17563168   194 GVFISIRNSNKK--VSTQIQKQRRKQEIRYLLQFMFTSVFYITTWVIFEILQYIIPDKKFQ 252
Cdd:pfam10328 179 LTAIKLRVSKKKsnTSSSESKRRRKREINFFKQTCFQDLLFLIDLVNYYIIAPLSDNRWFQ 239
7tm_classA_rhodopsin-like cd00637
rhodopsin receptor-like class A family of the seven-transmembrane G protein-coupled receptor ...
50-276 1.65e-05

rhodopsin receptor-like class A family of the seven-transmembrane G protein-coupled receptor superfamily; Class A rhodopsin-like receptors constitute about 90% of all GPCRs. The class A GPCRs include the light-sensitive rhodopsin as well as receptors for biogenic amines, lipids, nucleotides, odorants, peptide hormones, and a variety of other ligands. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Based on sequence similarity, GPCRs can be divided into six major classes: class A (rhodopsin-like family), class B (Methuselah-like, adhesion and secretin-like receptor family), class C (metabotropic glutamate receptor family), class D (fungal mating pheromone receptors), class E (cAMP receptor family), and class F (frizzled/smoothened receptor family). Nearly 800 human GPCR genes have been identified and are involved essentially in all major physiological processes. Approximately 40% of clinically marketed drugs mediate their effects through modulation of GPCR function for the treatment of a variety of human diseases including bacterial infections.


Pssm-ID: 410626 [Multi-domain]  Cd Length: 275  Bit Score: 45.36  E-value: 1.65e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 17563168  50 ISDLLQLFyLCFYFSLSIIIDQYAIAGDKVGRLSVFFGFIFLSGwFMENLLqpTMAINRFLVITFNNHNIFTFNKTMLMM 129
Cdd:cd00637  42 VADLLVGL-LVIPFSLVSLLLGRWWFGDALCKLLGFLQSVSLLA-SILTLT--AISVDRYLAIVHPLRYRRRFTRRRAKL 117
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 17563168 130 TVLISAALFSAACAQYLFPCCVFVID-YTVMALELVTINGVHSYTNSMFLVYDSICTSISIFCYIGVFISIRNSNKKV-- 206
Cdd:cd00637 118 LIALIWLLSLLLALPPLLGWGVYDYGgYCCCCLCWPDLTLSKAYTIFLFVLLFLLPLLVIIVCYVRIFRKLRRHRRRIrs 197
                       170       180       190       200       210       220       230
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 17563168 207 --STQIQKQRRKQEIRYLLQFMFTSVFYITTW---VIFEILQYIIPDKKFQPHAIIPA---MIILNCSSNSVIFLSIN 276
Cdd:cd00637 198 ssSNSSRRRRRRRERKVTKTLLIVVVVFLLCWlpyFILLLLDVFGPDPSPLPRILYFLallLAYLNSAINPIIYAFFN 275
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options: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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