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Conserved domains on  [gi|332804481|gb|AEF00175|]
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vomeronasal type 1 receptor D13 [Mus musculus musculus]

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
V1R super family cl17934
Vomeronasal organ pheromone receptor family, V1R; This family represents one of two known ...
15-294 5.41e-39

Vomeronasal organ pheromone receptor family, V1R; This family represents one of two known vomeronasal organ receptor families, the V1R family.


The actual alignment was detected with superfamily member pfam03402:

Pssm-ID: 460912  Cd Length: 292  Bit Score: 138.62  E-value: 5.41e-39
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481   15 TLQILLLCQFVVGTVANVFLFLHNISPVLTGSKQRPRQLILSHMSVANALILFLTSFPDMMAFAPRNSPTHLKCKLEYFS 94
Cdd:pfam03402   2 NIGIIFFSEVGVGISANSILLLFHIFMFFTGHRLRPTDLIIGHLSLIHLLMLLTMGIIAMDAFGSQGRWDDTTCKFLIYL 81
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481   95 RLVARSTNMCSTCVLSIHQFVTLVPVNRGKAILRASVPNLTSYSCYSCWFFSVLSNIYIAIKVTGPQITDNNTDSKSKLF 174
Cdd:pfam03402  82 HRVLRGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKSPHHISGAFLFLWVLYMSISSHLLLSIIATPNLTSSSFIYVTQS 161
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481  175 C--------FTSGFSVGIFFLRIFhdgtFMSIMVWTSVSMVLLLHRHRQRMQHILTPNQDARGQAETRATHTILMLVVTF 246
Cdd:pfam03402 162 CsilpmsysMQSLFSTLLASRDVF----LIGLMVLSSGYMVALLCRHKKQAQHLHGTSLSPKASPEQRATRTILLLMSFF 237
                         250       260       270       280
                  ....*....|....*....|....*....|....*....|....*....
gi 332804481  247 VSFYLL-NFICIIFYTFSIDSRLFmsHFSKVFAAGFPTISPLLLIFRDP 294
Cdd:pfam03402 238 VVMYILdSIVSYSRTMFKNDSIFY--CVQILVSHSYATVSPFVLISTEK 284
 
Name Accession Description Interval E-value
V1R pfam03402
Vomeronasal organ pheromone receptor family, V1R; This family represents one of two known ...
15-294 5.41e-39

Vomeronasal organ pheromone receptor family, V1R; This family represents one of two known vomeronasal organ receptor families, the V1R family.


Pssm-ID: 460912  Cd Length: 292  Bit Score: 138.62  E-value: 5.41e-39
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481   15 TLQILLLCQFVVGTVANVFLFLHNISPVLTGSKQRPRQLILSHMSVANALILFLTSFPDMMAFAPRNSPTHLKCKLEYFS 94
Cdd:pfam03402   2 NIGIIFFSEVGVGISANSILLLFHIFMFFTGHRLRPTDLIIGHLSLIHLLMLLTMGIIAMDAFGSQGRWDDTTCKFLIYL 81
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481   95 RLVARSTNMCSTCVLSIHQFVTLVPVNRGKAILRASVPNLTSYSCYSCWFFSVLSNIYIAIKVTGPQITDNNTDSKSKLF 174
Cdd:pfam03402  82 HRVLRGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKSPHHISGAFLFLWVLYMSISSHLLLSIIATPNLTSSSFIYVTQS 161
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481  175 C--------FTSGFSVGIFFLRIFhdgtFMSIMVWTSVSMVLLLHRHRQRMQHILTPNQDARGQAETRATHTILMLVVTF 246
Cdd:pfam03402 162 CsilpmsysMQSLFSTLLASRDVF----LIGLMVLSSGYMVALLCRHKKQAQHLHGTSLSPKASPEQRATRTILLLMSFF 237
                         250       260       270       280
                  ....*....|....*....|....*....|....*....|....*....
gi 332804481  247 VSFYLL-NFICIIFYTFSIDSRLFmsHFSKVFAAGFPTISPLLLIFRDP 294
Cdd:pfam03402 238 VVMYILdSIVSYSRTMFKNDSIFY--CVQILVSHSYATVSPFVLISTEK 284
7tm_V1R_pheromone cd13949
vomeronasal organ pheromone receptor type-1 family, member of the seven-transmembrane G ...
15-294 5.85e-39

vomeronasal organ pheromone receptor type-1 family, member of the seven-transmembrane G protein-coupled receptor superfamily; This family represents vomeronasal type-1 receptors (V1Rs) that are specifically expressed in the vomeronasal organ (VNO), which is the sensory organ of the accessory olfactory system present in amphibians, reptiles, and non-primate mammals such as mice and rodents, but it is non-functional or absent in humans, apes and monkeys. The VNO detects pheromones, chemicals released from animals that can influence social and reproductive behaviors, such as male-male aggression or sexual mating, in other members of the same species. On the other hand, the olfactory epithelium, which contains olfactory receptor neurons inside the nasal cavity, is responsible for detecting odor molecules (smells). There are two types of vertebrate pheromones: (1) small volatile molecules such as 2-heptanone, a substance in the urine of both male and female that extends estrous cycle length in female mice; and (2) water-soluble molecules such as the major histocompatibility complex (HMC) class-I peptide, which can induce the pregnancy block effect, the tendency for female rodents to abort their pregnancies upon exposure to the scent of an unknown male. While V1Rs and G-alpha(i2) protein are co-expressed in the apical neurons of the VNO, V2Rs (type-2 vomeronasal receptors) and G-alpha(o) protein are coexpressed in the basal layer of the VNO. Activation of V1R or V2R causes stimulation of phospholipase pathway, generating diacylglycerol (DAG) and inositol 1,4,5-triphosphate (IP3). V1Rs have a short N-terminal extracellular domain, whereas V2Rs contain a long N-terminal extracellular domain, which is believed to bind pheromones. Although V1Rs share the seven-transmembrane domain structure with V1Rs and olfactory receptors, they share little sequence similarity with each other.


Pssm-ID: 320087  Cd Length: 295  Bit Score: 138.56  E-value: 5.85e-39
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481  15 TLQILLLCQFVVGTVANVFLFLHNISPVLTGSKQRPRQLILSHMSVANALILFLTSFPDMMAFAPRNSPTHLKCKLEYFS 94
Cdd:cd13949    2 NIRITFFSEVGVGISANSILLLFHIFMFFRGHRPRSTDLIIGHLSLIHLLLLLTMGIIATDAFFSWGGWDDITCKFLIYL 81
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481  95 RLVARSTNMCSTCVLSIHQFVTLVPVNRGKAILRASVPNLTSYSCYSCWFFSVLSNIYIAIKVTGPQITDNN-----TDS 169
Cdd:cd13949   82 HRVLRGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKSPHHISGAFLFLWVLYMLISSHLLVSIIATPNLTSNnfiyvTQS 161
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481 170 KSKL---FCFTSGFSVgiffLRIFHDGTFMSIMVWTSVSMVLLLHRHRQRMQHILTPNQDARGQAETRATHTILMLVVTF 246
Cdd:cd13949  162 CSILpmsYSMQSLFST----LLAFRDVFLIGLMLLSSGYMVALLHRHKKQVQHLHSTSLSPKASPEQRATQTILLLMSFF 237
                        250       260       270       280
                 ....*....|....*....|....*....|....*....|....*...
gi 332804481 247 VSFYLLNFICIIFYTFSIDSRLFMSHFSKVFAAGFPTISPLLLIFRDP 294
Cdd:cd13949  238 VVMYILDSIVFYSRTKFKNDSILYCVQIIVSHSYATVSPFVFLMTEKH 285
 
Name Accession Description Interval E-value
V1R pfam03402
Vomeronasal organ pheromone receptor family, V1R; This family represents one of two known ...
15-294 5.41e-39

Vomeronasal organ pheromone receptor family, V1R; This family represents one of two known vomeronasal organ receptor families, the V1R family.


Pssm-ID: 460912  Cd Length: 292  Bit Score: 138.62  E-value: 5.41e-39
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481   15 TLQILLLCQFVVGTVANVFLFLHNISPVLTGSKQRPRQLILSHMSVANALILFLTSFPDMMAFAPRNSPTHLKCKLEYFS 94
Cdd:pfam03402   2 NIGIIFFSEVGVGISANSILLLFHIFMFFTGHRLRPTDLIIGHLSLIHLLMLLTMGIIAMDAFGSQGRWDDTTCKFLIYL 81
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481   95 RLVARSTNMCSTCVLSIHQFVTLVPVNRGKAILRASVPNLTSYSCYSCWFFSVLSNIYIAIKVTGPQITDNNTDSKSKLF 174
Cdd:pfam03402  82 HRVLRGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKSPHHISGAFLFLWVLYMSISSHLLLSIIATPNLTSSSFIYVTQS 161
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481  175 C--------FTSGFSVGIFFLRIFhdgtFMSIMVWTSVSMVLLLHRHRQRMQHILTPNQDARGQAETRATHTILMLVVTF 246
Cdd:pfam03402 162 CsilpmsysMQSLFSTLLASRDVF----LIGLMVLSSGYMVALLCRHKKQAQHLHGTSLSPKASPEQRATRTILLLMSFF 237
                         250       260       270       280
                  ....*....|....*....|....*....|....*....|....*....
gi 332804481  247 VSFYLL-NFICIIFYTFSIDSRLFmsHFSKVFAAGFPTISPLLLIFRDP 294
Cdd:pfam03402 238 VVMYILdSIVSYSRTMFKNDSIFY--CVQILVSHSYATVSPFVLISTEK 284
7tm_V1R_pheromone cd13949
vomeronasal organ pheromone receptor type-1 family, member of the seven-transmembrane G ...
15-294 5.85e-39

vomeronasal organ pheromone receptor type-1 family, member of the seven-transmembrane G protein-coupled receptor superfamily; This family represents vomeronasal type-1 receptors (V1Rs) that are specifically expressed in the vomeronasal organ (VNO), which is the sensory organ of the accessory olfactory system present in amphibians, reptiles, and non-primate mammals such as mice and rodents, but it is non-functional or absent in humans, apes and monkeys. The VNO detects pheromones, chemicals released from animals that can influence social and reproductive behaviors, such as male-male aggression or sexual mating, in other members of the same species. On the other hand, the olfactory epithelium, which contains olfactory receptor neurons inside the nasal cavity, is responsible for detecting odor molecules (smells). There are two types of vertebrate pheromones: (1) small volatile molecules such as 2-heptanone, a substance in the urine of both male and female that extends estrous cycle length in female mice; and (2) water-soluble molecules such as the major histocompatibility complex (HMC) class-I peptide, which can induce the pregnancy block effect, the tendency for female rodents to abort their pregnancies upon exposure to the scent of an unknown male. While V1Rs and G-alpha(i2) protein are co-expressed in the apical neurons of the VNO, V2Rs (type-2 vomeronasal receptors) and G-alpha(o) protein are coexpressed in the basal layer of the VNO. Activation of V1R or V2R causes stimulation of phospholipase pathway, generating diacylglycerol (DAG) and inositol 1,4,5-triphosphate (IP3). V1Rs have a short N-terminal extracellular domain, whereas V2Rs contain a long N-terminal extracellular domain, which is believed to bind pheromones. Although V1Rs share the seven-transmembrane domain structure with V1Rs and olfactory receptors, they share little sequence similarity with each other.


Pssm-ID: 320087  Cd Length: 295  Bit Score: 138.56  E-value: 5.85e-39
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481  15 TLQILLLCQFVVGTVANVFLFLHNISPVLTGSKQRPRQLILSHMSVANALILFLTSFPDMMAFAPRNSPTHLKCKLEYFS 94
Cdd:cd13949    2 NIRITFFSEVGVGISANSILLLFHIFMFFRGHRPRSTDLIIGHLSLIHLLLLLTMGIIATDAFFSWGGWDDITCKFLIYL 81
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481  95 RLVARSTNMCSTCVLSIHQFVTLVPVNRGKAILRASVPNLTSYSCYSCWFFSVLSNIYIAIKVTGPQITDNN-----TDS 169
Cdd:cd13949   82 HRVLRGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKSPHHISGAFLFLWVLYMLISSHLLVSIIATPNLTSNnfiyvTQS 161
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481 170 KSKL---FCFTSGFSVgiffLRIFHDGTFMSIMVWTSVSMVLLLHRHRQRMQHILTPNQDARGQAETRATHTILMLVVTF 246
Cdd:cd13949  162 CSILpmsYSMQSLFST----LLAFRDVFLIGLMLLSSGYMVALLHRHKKQVQHLHSTSLSPKASPEQRATQTILLLMSFF 237
                        250       260       270       280
                 ....*....|....*....|....*....|....*....|....*...
gi 332804481 247 VSFYLLNFICIIFYTFSIDSRLFMSHFSKVFAAGFPTISPLLLIFRDP 294
Cdd:cd13949  238 VVMYILDSIVFYSRTKFKNDSILYCVQIIVSHSYATVSPFVFLMTEKH 285
7tm_GPCRs cd14964
seven-transmembrane G protein-coupled receptor superfamily; This hierarchical evolutionary ...
16-291 9.54e-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.


Pssm-ID: 410628 [Multi-domain]  Cd Length: 267  Bit Score: 46.27  E-value: 9.54e-06
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481  16 LQILLLCQFVVGTVANVFLFLHNISPVLtgsKQRPRQLILSHMSVANALILFLTSFPDMMAFA-PRNSPTHLKCKLEYFS 94
Cdd:cd14964    1 TTIILSLLTCLGLLGNLLVLLSLVRLRK---RPRSTRLLLASLAACDLLASLVVLVLFFLLGLtEASSRPQALCYLIYLL 77
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481  95 RLVARSTNMCSTCVLSIHQFVTLVPVnrgKAILRASVPNLTSYSCYSCWFFSVLSNIyIAIKVTGPQITDNNTDSKSKLF 174
Cdd:cd14964   78 WYGANLASIWTTLVLTYHRYFALCGP---LKYTRLSSPGKTRVIILGCWGVSLLLSI-PPLVGKGAIPRYNTLTGSCYLI 153
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481 175 CFTSGFSVGIFFlrifhdGTFMSIMVWTSVSMVLLLHRHRQRMQHIlTPNQDARGQAETRATHTILMLVVTFVSFYLLNF 254
Cdd:cd14964  154 CTTIYLTWGFLL------VSFLLPLVAFLVIFSRIVLRLRRRVRAI-RSAASLNTDKNLKATKSLLILVITFLLCWLPFS 226
                        250       260       270
                 ....*....|....*....|....*....|....*....
gi 332804481 255 ICIIFYTFSID--SRLFMSHFSKVFAAGFPTISPLLLIF 291
Cdd:cd14964  227 IVFILHALVAAgqGLNLLSILANLLAVLASTLNPFIYCL 265
7tm_TAS2R cd13950
mammalian taste receptors type 2, member of the seven-transmembrane G protein-coupled receptor ...
142-295 1.28e-05

mammalian taste receptors type 2, member of the seven-transmembrane G protein-coupled receptor superfamily; This group represents a family of mammalian taste receptors (TAS2Rs), which function as bitter taste receptors. The human TAS2R family contains about 25 functional members, which are glycoproteins and have the ability to form both homomeric and heteromeric receptor complexes. Five basic tastes are perceived by animals: bitter, sweet, sour, salty, and umami (the taste of glutamate, MSG). Among these, sour and salty are mediated by ion channels, while the perception of umami and sweet tastes is mediated by the TAS1R taste receptors, which belong to the class C GPCR family. The TAS2Rs in humans have a short extracellular N-terminus and the ligand binds within the transmembrane domain, whereas the TAS1Rs have a large N-terminal extracellular domain composed of the Venus flytrap module that forms the orthosteric (primary) ligand binding site. Signal transduction of bitter taste involves binding of bitter compounds to TAS2Rs linked to the alpha-subunit of gustducin, a heterotrimeric G protein expressed in taste receptor cells. This G-alpha subunit stimulates phosphodiesterase and decreases cAMP and cGMP levels. Further steps in the signaling cascade is still unknown. The beta-gamma-subunit of gustducin also mediates bitter taste transduction by activating phospholipase C, which leads to an increased formation of IP3 (inositol triphosphate) and DAG (diacylglycerol), thereby causing release of Ca2+ from intracellular stores and enhanced neurotransmitter release.


Pssm-ID: 320088  Cd Length: 288  Bit Score: 46.02  E-value: 1.28e-05
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481 142 CWFFSVLSNIYIAIKV-TGPQITDNNTDSKSKLFCFTSGFSVGIFFLriFHDGTFMS-IMVWTSVSMVLL-LHRHRQRMQ 218
Cdd:cd13950  130 SLLISLLISLPIVWVIySVYQNNSKEESNNTSKFQVKKTSYFYSFIL--LNLGSLIPfILSLISFFLLIFsLWRHTRQMQ 207
                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 332804481 219 HILTPNQDARGQAETRATHTILMLVVTFVSFYLLNFICIIFYTFSIDSRLFMshFSKVFAAGFPTISPLLLIFRDPK 295
Cdd:cd13950  208 LNATGSRDPSTEAHIRAMKSMISFLILFIIYFLALIITILSYSFLENKLAVL--FCEVLMALYPSGHSFILILGNPK 282
7tm_TAS2R14-like cd15019
mammalian taste receptor 2, subtype 14, member of the seven-transmembrane G protein-coupled ...
147-295 5.34e-05

mammalian taste receptor 2, subtype 14, member of the seven-transmembrane G protein-coupled receptor superfamily; This group includes the mammalian taste receptor 2 (TAS2R) subtype 14, which functions as a bitter taste receptor. The human TAS2R family contains about 25 functional members, which are glycoproteins and have the ability to form both homomeric and heteromeric receptor complexes. Five basic tastes are perceived by animals: bitter, sweet, sour, salty, and umami (the taste of glutamate, MSG). Among these, sour and salty are mediated by ion channels, while the perception of umami and sweet tastes is mediated by the TAS1R taste receptors, which belong to the class C GPCR family. The TAS2Rs in humans have a short extracellular N-terminus and the ligand binds within the transmembrane domain, whereas the TAS1Rs have a large N-terminal extracellular domain composed of the Venus flytrap module that forms the orthosteric (primary) ligand binding site. Signal transduction of bitter taste involves binding of bitter compounds to TAS2Rs linked to the alpha-subunit of gustducin, a heterotrimeric G protein expressed in taste receptor cells. This G-alpha subunit stimulates phosphodiesterase and decreases cAMP and cGMP levels. Further steps in the signaling cascade is still unknown. The beta-gamma-subunit of gustducin also mediates bitter taste transduction by activating phospholipase C, which leads to an increased formation of IP3 (inositol triphosphate) and DAG (diacylglycerol), thereby causing release of Ca2+ from intracellular stores and enhanced neurotransmitter release.


Pssm-ID: 320147  Cd Length: 290  Bit Score: 44.05  E-value: 5.34e-05
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481 147 VLSNIYIAIKVTGpqitdnntdSKSKLFCFTSGFSVGIFF-LRIFHDGTFMSIMVWTSVSMVLLL----HRHRQRMQHIL 221
Cdd:cd15019  139 VLINTHIDVWIDG---------YKRNMSYSSSSSNSAQFSkLLLFTNTMFTFIPFTVSLTTFLLLifslWKHLKKMQHNA 209
                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 332804481 222 TPNQDARGQAETRATHTILMLVVTFVSFYLlnFICIIFYTFSIDSRLFMSHFSKVFAAGFPTISPLLLIFRDPK 295
Cdd:cd15019  210 KGSRDASTTAHIKALQTVIAFLLLYTIFFL--SLLVQVWSSELLEKNLIILFCQVIGIAFPSGHSCVLILGNSK 281
7tm_classA_rhodopsin-like cd00637
rhodopsin receptor-like class A family of the seven-transmembrane G protein-coupled receptor ...
18-277 7.17e-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: 43.43  E-value: 7.17e-05
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481  18 ILLLCQFVVGTVANVFLFlhnISPVLTGSKQRPRQLILSHMSVANALILfLTSFPDMMAF--APRNSPTHLKCKLEYFSR 95
Cdd:cd00637    3 VLYILIFVVGLVGNLLVI---LVILRNRRLRTVTNYFILNLAVADLLVG-LLVIPFSLVSllLGRWWFGDALCKLLGFLQ 78
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481  96 LVARSTNMCSTCVLSIHQFVTLVPVNRGKAILRasvPNLTSYSCYSCWFFSVLSNI-----YIAIKVTGPQITDNNTDSK 170
Cdd:cd00637   79 SVSLLASILTLTAISVDRYLAIVHPLRYRRRFT---RRRAKLLIALIWLLSLLLALppllgWGVYDYGGYCCCCLCWPDL 155
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481 171 SKLFCFTSGFSVGIFFLrifhdgtFMSIMVWTSVSMVLLLHRHRQRMQHILTPN-QDARGQAETRATHTILMLVVTFVSF 249
Cdd:cd00637  156 TLSKAYTIFLFVLLFLL-------PLLVIIVCYVRIFRKLRRHRRRIRSSSSNSsRRRRRRRERKVTKTLLIVVVVFLLC 228
                        250       260
                 ....*....|....*....|....*...
gi 332804481 250 YLLNFICIIFYTFSIDSRLFMSHFSKVF 277
Cdd:cd00637  229 WLPYFILLLLDVFGPDPSPLPRILYFLA 256
TAS2R pfam05296
Taste receptor protein (TAS2R); This family consists of several forms of eukaryotic taste ...
204-295 2.37e-04

Taste receptor protein (TAS2R); This family consists of several forms of eukaryotic taste receptor proteins (TAS2Rs). TAS2Rs are G protein-coupled receptors expressed in subsets of taste receptor cells of the tongue and palate epithelia in humans and mice, and are organized in the genome in clusters. The proteins are genetically linked to loci that influence bitter perception in mice and humans.


Pssm-ID: 283059  Cd Length: 303  Bit Score: 41.88  E-value: 2.37e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481  204 VSMVLLLH---RHRQRMQHILTPNQDARGQAETRATHTILMLVVTFVSFYLLNFICIIFYTFSIDSRLFMshFSKVFAAG 280
Cdd:pfam05296 198 ISFLLLIFslwRHTRQMQLNSTGFRDPSTEAHVRALKSLISFLILYISYFLSFLISIISFLLPKNKLAFI--FGEIVTYL 275
                          90
                  ....*....|....*
gi 332804481  281 FPTISPLLLIFRDPK 295
Cdd:pfam05296 276 YPSGHSFILILGNPK 290
7tm_TAS2R41-like cd15018
mammalian taste receptor 2, subtype 41, member of the seven-transmembrane G protein-coupled ...
203-251 1.79e-03

mammalian taste receptor 2, subtype 41, member of the seven-transmembrane G protein-coupled receptor superfamily; This group includes the mammalian taste receptor 2 (TAS2R) subtype 41, which functions as a bitter taste receptor. Also included is the closely related TAS2R60. The human TAS2R family contains about 25 functional members, which are glycoproteins and have the ability to form both homomeric and heteromeric receptor complexes. Five basic tastes are perceived by animals: bitter, sweet, sour, salty, and umami (the taste of glutamate, MSG). Among these, sour and salty are mediated by ion channels, while the perception of umami and sweet tastes is mediated by the TAS1R taste receptors, which belong to the class C GPCR family. The TAS2Rs in humans have a short extracellular N-terminus and the ligand binds within the transmembrane domain, whereas the TAS1Rs have a large N-terminal extracellular domain composed of the Venus flytrap module that forms the orthosteric (primary) ligand binding site. Signal transduction of bitter taste involves binding of bitter compounds to TAS2Rs linked to the alpha-subunit of gustducin, a heterotrimeric G protein expressed in taste receptor cells. This G-alpha subunit stimulates phosphodiesterase and decreases cAMP and cGMP levels. Further steps in the signaling cascade is still unknown. The beta-gamma-subunit of gustducin also mediates bitter taste transduction by activating phospholipase C, which leads to an increased formation of IP3 (inositol triphosphate) and DAG (diacylglycerol), thereby causing release of Ca2+ from intracellular stores and enhanced neurotransmitter release.


Pssm-ID: 320146  Cd Length: 290  Bit Score: 39.32  E-value: 1.79e-03
                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|..
gi 332804481 203 SVSMVLL---LHRHRQRMQHILTPNQDARGQAETRATHTILMLVVTFVSFYL 251
Cdd:cd15018  192 LISMVLLinsLRRHTKKMLHNLSSLQDPSTQAHIKALKALISFLILFASYFL 243
7tm_TAS2R3 cd15020
mammalian taste receptor 2, subtype 3, member of the seven-transmembrane G protein-coupled ...
206-295 3.75e-03

mammalian taste receptor 2, subtype 3, member of the seven-transmembrane G protein-coupled receptor superfamily; This group includes the mammalian taste receptor 2 (TAS2R) subtype 3, which functions as a bitter taste receptor. The human TAS2R family contains about 25 functional members, which are glycoproteins and have the ability to form both homomeric and heteromeric receptor complexes. Five basic tastes are perceived by animals: bitter, sweet, sour, salty, and umami (the taste of glutamate, MSG). Among these, sour and salty are mediated by ion channels, while the perception of umami and sweet tastes is mediated by the TAS1R taste receptors, which belong to the class C GPCR family. The TAS2Rs in humans have a short extracellular N-terminus and the ligand binds within the transmembrane domain, whereas the TAS1Rs have a large N-terminal extracellular domain composed of the Venus flytrap module that forms the orthosteric (primary) ligand binding site. Signal transduction of bitter taste involves binding of bitter compounds to TAS2Rs linked to the alpha-subunit of gustducin, a heterotrimeric G protein expressed in taste receptor cells. This G-alpha subunit stimulates phosphodiesterase and decreases cAMP and cGMP levels. Further steps in the signaling cascade is still unknown. The beta-gamma-subunit of gustducin also mediates bitter taste transduction by activating phospholipase C, which leads to an increased formation of IP3 (inositol triphosphate) and DAG (diacylglycerol), thereby causing release of Ca2+ from intracellular stores and enhanced neurotransmitter release.


Pssm-ID: 320148  Cd Length: 290  Bit Score: 38.14  E-value: 3.75e-03
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 332804481 206 MVLLLHRHRQRMQHILTPNQDARGQAETRATHTILMLVVTFVsFYLLNFICIIFYTFSIDSRLfMSHFSKVFAAGFPTIS 285
Cdd:cd15020  197 LILSLRRHTQQMQHHTTGSRDPSTEAHVRATKIILSFLLLFI-FYFVAFFIGSSSFFLPDTKL-AIMIGELITAAYPSVH 274
                         90
                 ....*....|
gi 332804481 286 PLLLIFRDPK 295
Cdd:cd15020  275 SFILILQNNK 284
 
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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