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Conserved domains on  [gi|46430550|ref|NP_997428|]
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vomeronasal 1 receptor 179 [Mus 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 ...
29-308 5.84e-36

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: 131.31  E-value: 5.84e-36
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550    29 VALQIFLLCQFGVGTVANVFLFVHNFYPVLTGSQQSPRQVILSHMAVANILILFITIFPTNVMtFAPRNPPTDLKCKLEF 108
Cdd:pfam03402   1 VNIGIIFFSEVGVGISANSILLLFHIFMFFTGHRLRPTDLIIGHLSLIHLLMLLTMGIIAMDA-FGSQGRWDDTTCKFLI 79
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550   109 FIRLVARSTNLCSTCVLSIYQFVTLVPVNRGKLILRASVPSLARYSCYSCWFFSVLNNIYIPIKVTGPQIADNNTDCRSK 188
Cdd:pfam03402  80 YLHRVLRGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKSPHHISGAFLFLWVLYMSISSHLLLSIIATPNLTSSSFIYVT 159
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550   189 LFCFTFGYSRVIFFLRIAY----DATFMSIMVWTSVSMVLLLHRHHHKMQHIFTTNRHYRGQAETRATSTILMLVVTFVS 264
Cdd:pfam03402 160 QSCSILPMSYSMQSLFSTLlasrDVFLIGLMVLSSGYMVALLCRHKKQAQHLHGTSLSPKASPEQRATRTILLLMSFFVV 239
                         250       260       270       280
                  ....*....|....*....|....*....|....*....|....*
gi 46430550   265 FYLLNFTCIIIQALVTDSHAFVrhWSEALVT-GFPTISPLLLIFR 308
Cdd:pfam03402 240 MYILDSIVSYSRTMFKNDSIFY--CVQILVShSYATVSPFVLIST 282
 
Name Accession Description Interval E-value
V1R pfam03402
Vomeronasal organ pheromone receptor family, V1R; This family represents one of two known ...
29-308 5.84e-36

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: 131.31  E-value: 5.84e-36
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550    29 VALQIFLLCQFGVGTVANVFLFVHNFYPVLTGSQQSPRQVILSHMAVANILILFITIFPTNVMtFAPRNPPTDLKCKLEF 108
Cdd:pfam03402   1 VNIGIIFFSEVGVGISANSILLLFHIFMFFTGHRLRPTDLIIGHLSLIHLLMLLTMGIIAMDA-FGSQGRWDDTTCKFLI 79
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550   109 FIRLVARSTNLCSTCVLSIYQFVTLVPVNRGKLILRASVPSLARYSCYSCWFFSVLNNIYIPIKVTGPQIADNNTDCRSK 188
Cdd:pfam03402  80 YLHRVLRGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKSPHHISGAFLFLWVLYMSISSHLLLSIIATPNLTSSSFIYVT 159
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550   189 LFCFTFGYSRVIFFLRIAY----DATFMSIMVWTSVSMVLLLHRHHHKMQHIFTTNRHYRGQAETRATSTILMLVVTFVS 264
Cdd:pfam03402 160 QSCSILPMSYSMQSLFSTLlasrDVFLIGLMVLSSGYMVALLCRHKKQAQHLHGTSLSPKASPEQRATRTILLLMSFFVV 239
                         250       260       270       280
                  ....*....|....*....|....*....|....*....|....*
gi 46430550   265 FYLLNFTCIIIQALVTDSHAFVrhWSEALVT-GFPTISPLLLIFR 308
Cdd:pfam03402 240 MYILDSIVSYSRTMFKNDSIFY--CVQILVShSYATVSPFVLIST 282
7tm_V1R_pheromone cd13949
vomeronasal organ pheromone receptor type-1 family, member of the seven-transmembrane G ...
29-307 1.12e-31

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: 120.07  E-value: 1.12e-31
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550  29 VALQIFLLCQFGVGTVANVFLFVHNFYPVLTGSQQSPRQVILSHMAVANILILFITIFPTnVMTFAPRNPPTDLKCKLEF 108
Cdd:cd13949   1 SNIRITFFSEVGVGISANSILLLFHIFMFFRGHRPRSTDLIIGHLSLIHLLLLLTMGIIA-TDAFFSWGGWDDITCKFLI 79
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550 109 FIRLVARSTNLCSTCVLSIYQFVTLVPVNRGKLILRASVPSLARYSCYSCWFFSVLNNIYIPIKVTGPQIADNNTDCRSK 188
Cdd:cd13949  80 YLHRVLRGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKSPHHISGAFLFLWVLYMLISSHLLVSIIATPNLTSNNFIYVT 159
                       170       180       190       200       210       220       230       240
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550 189 LFCFTFGYSRV---IFFLRIAY-DATFMSIMVWTSVSMVLLLHRHHHKMQHIFTTNRHYRGQAETRATSTILMLVVTFVS 264
Cdd:cd13949 160 QSCSILPMSYSmqsLFSTLLAFrDVFLIGLMLLSSGYMVALLHRHKKQVQHLHSTSLSPKASPEQRATQTILLLMSFFVV 239
                       250       260       270       280
                ....*....|....*....|....*....|....*....|...
gi 46430550 265 FYLLNFTCIIIQALVTDSHAFVRHWSeALVTGFPTISPLLLIF 307
Cdd:cd13949 240 MYILDSIVFYSRTKFKNDSILYCVQI-IVSHSYATVSPFVFLM 281
 
Name Accession Description Interval E-value
V1R pfam03402
Vomeronasal organ pheromone receptor family, V1R; This family represents one of two known ...
29-308 5.84e-36

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: 131.31  E-value: 5.84e-36
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550    29 VALQIFLLCQFGVGTVANVFLFVHNFYPVLTGSQQSPRQVILSHMAVANILILFITIFPTNVMtFAPRNPPTDLKCKLEF 108
Cdd:pfam03402   1 VNIGIIFFSEVGVGISANSILLLFHIFMFFTGHRLRPTDLIIGHLSLIHLLMLLTMGIIAMDA-FGSQGRWDDTTCKFLI 79
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550   109 FIRLVARSTNLCSTCVLSIYQFVTLVPVNRGKLILRASVPSLARYSCYSCWFFSVLNNIYIPIKVTGPQIADNNTDCRSK 188
Cdd:pfam03402  80 YLHRVLRGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKSPHHISGAFLFLWVLYMSISSHLLLSIIATPNLTSSSFIYVT 159
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550   189 LFCFTFGYSRVIFFLRIAY----DATFMSIMVWTSVSMVLLLHRHHHKMQHIFTTNRHYRGQAETRATSTILMLVVTFVS 264
Cdd:pfam03402 160 QSCSILPMSYSMQSLFSTLlasrDVFLIGLMVLSSGYMVALLCRHKKQAQHLHGTSLSPKASPEQRATRTILLLMSFFVV 239
                         250       260       270       280
                  ....*....|....*....|....*....|....*....|....*
gi 46430550   265 FYLLNFTCIIIQALVTDSHAFVrhWSEALVT-GFPTISPLLLIFR 308
Cdd:pfam03402 240 MYILDSIVSYSRTMFKNDSIFY--CVQILVShSYATVSPFVLIST 282
7tm_V1R_pheromone cd13949
vomeronasal organ pheromone receptor type-1 family, member of the seven-transmembrane G ...
29-307 1.12e-31

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: 120.07  E-value: 1.12e-31
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550  29 VALQIFLLCQFGVGTVANVFLFVHNFYPVLTGSQQSPRQVILSHMAVANILILFITIFPTnVMTFAPRNPPTDLKCKLEF 108
Cdd:cd13949   1 SNIRITFFSEVGVGISANSILLLFHIFMFFRGHRPRSTDLIIGHLSLIHLLLLLTMGIIA-TDAFFSWGGWDDITCKFLI 79
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550 109 FIRLVARSTNLCSTCVLSIYQFVTLVPVNRGKLILRASVPSLARYSCYSCWFFSVLNNIYIPIKVTGPQIADNNTDCRSK 188
Cdd:cd13949  80 YLHRVLRGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKSPHHISGAFLFLWVLYMLISSHLLVSIIATPNLTSNNFIYVT 159
                       170       180       190       200       210       220       230       240
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550 189 LFCFTFGYSRV---IFFLRIAY-DATFMSIMVWTSVSMVLLLHRHHHKMQHIFTTNRHYRGQAETRATSTILMLVVTFVS 264
Cdd:cd13949 160 QSCSILPMSYSmqsLFSTLLAFrDVFLIGLMLLSSGYMVALLHRHKKQVQHLHSTSLSPKASPEQRATQTILLLMSFFVV 239
                       250       260       270       280
                ....*....|....*....|....*....|....*....|...
gi 46430550 265 FYLLNFTCIIIQALVTDSHAFVRHWSeALVTGFPTISPLLLIF 307
Cdd:cd13949 240 MYILDSIVFYSRTKFKNDSILYCVQI-IVSHSYATVSPFVFLM 281
7tm_GPCRs cd14964
seven-transmembrane G protein-coupled receptor superfamily; This hierarchical evolutionary ...
31-281 6.17e-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: 47.04  E-value: 6.17e-06
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550  31 LQIFLLCQFGVGTVANVFLFVHNFYPVLTgsqQSPRQVILSHMAVANILILFITIFPTNVMTFAPRNPPTDLKCKLEFFI 110
Cdd:cd14964   1 TTIILSLLTCLGLLGNLLVLLSLVRLRKR---PRSTRLLLASLAACDLLASLVVLVLFFLLGLTEASSRPQALCYLIYLL 77
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550 111 RLVARSTNLCSTCVLSIYQFVTLVPVnrgKLILRASVPSLARYSCYSCWFFSVLNNIYIPIKVTGpqIADNNTDCRSKLF 190
Cdd:cd14964  78 WYGANLASIWTTLVLTYHRYFALCGP---LKYTRLSSPGKTRVIILGCWGVSLLLSIPPLVGKGA--IPRYNTLTGSCYL 152
                       170       180       190       200       210       220       230       240
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550 191 CFTFGYSRVIFFLriaydATFMSIMVWTSVSMVLLLHRHHHKMQHIFTTNRHyRGQAETRATSTILMLVVTFVSFYLLNF 270
Cdd:cd14964 153 ICTTIYLTWGFLL-----VSFLLPLVAFLVIFSRIVLRLRRRVRAIRSAASL-NTDKNLKATKSLLILVITFLLCWLPFS 226
                       250
                ....*....|.
gi 46430550 271 TCIIIQALVTD 281
Cdd:cd14964 227 IVFILHALVAA 237
7tm_classA_rhodopsin-like cd00637
rhodopsin receptor-like class A family of the seven-transmembrane G protein-coupled receptor ...
33-294 1.84e-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: 1.84e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550  33 IFLLCQFGVGTVANVFLFVHNFYpvlTGSQQSPRQVILSHMAVANILILFITIFPTNVMTFAPRNPPTDLKCKLEFFIRL 112
Cdd:cd00637   3 VLYILIFVVGLVGNLLVILVILR---NRRLRTVTNYFILNLAVADLLVGLLVIPFSLVSLLLGRWWFGDALCKLLGFLQS 79
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550 113 VARSTNLCSTCVLSIYQFVTLVPVNRGKLILRasvPSLARYSCYSCWFFSVLNNIyIPIKVTGPQIADNNTDCRSKLFCF 192
Cdd:cd00637  80 VSLLASILTLTAISVDRYLAIVHPLRYRRRFT---RRRAKLLIALIWLLSLLLAL-PPLLGWGVYDYGGYCCCCLCWPDL 155
                       170       180       190       200       210       220       230       240
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550 193 TFGYSRVIFFLRIAYDATFMsIMVWTSVSMVLLLHRHHHKMQHIFTTNRHYRG-QAETRATSTILMLVVTFVSFYLLNFT 271
Cdd:cd00637 156 TLSKAYTIFLFVLLFLLPLL-VIIVCYVRIFRKLRRHRRRIRSSSSNSSRRRRrRRERKVTKTLLIVVVVFLLCWLPYFI 234
                       250       260
                ....*....|....*....|...
gi 46430550 272 CIIIQALVTDSHAFVRHWSEALV 294
Cdd:cd00637 235 LLLLDVFGPDPSPLPRILYFLAL 257
7tm_1 pfam00001
7 transmembrane receptor (rhodopsin family); This family contains, amongst other ...
63-282 1.28e-04

7 transmembrane receptor (rhodopsin family); This family contains, amongst other G-protein-coupled receptors (GCPRs), members of the opsin family, which have been considered to be typical members of the rhodopsin superfamily. They share several motifs, mainly the seven transmembrane helices, GCPRs of the rhodopsin superfamily. All opsins bind a chromophore, such as 11-cis-retinal. The function of most opsins other than the photoisomerases is split into two steps: light absorption and G-protein activation. Photoisomerases, on the other hand, are not coupled to G-proteins - they are thought to generate and supply the chromophore that is used by visual opsins.


Pssm-ID: 459624 [Multi-domain]  Cd Length: 256  Bit Score: 42.67  E-value: 1.28e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550    63 QSPRQVILSHMAVANILILFITIFPTNVMTFAPRNPPT-DLKCKLEFFIRLVARSTNLCSTCVLSIYQFVTLV-PVNRGk 140
Cdd:pfam00001  16 RTPTNIFLLNLAVADLLFSLLTLPFWLVYYLNHGDWPFgSALCKIVGALFVVNGYASILLLTAISIDRYLAIVhPLRYK- 94
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550   141 lilRASVPSLARYSCYSCWFFSVLNNIYIPIKVTGPQIADNN-TDCR-------SKLFCFTFGYSRVIFFLRiaydatfM 212
Cdd:pfam00001  95 ---RRRTPRRAKVLILVIWVLALLLSLPPLLFGWTLTVPEGNvTVCFidfpedlSKPVSYTLLISVLGFLLP-------L 164
                         170       180       190       200       210       220       230
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550   213 SIMVWTSVSMVLLLHRHHHKMQhifttnRHYRGQAETRATSTILMLVVTFVSFYLLNFTCIIIQALVTDS 282
Cdd:pfam00001 165 LVILVCYTLIIRTLRKSASKQK------SSERTQRRRKALKTLAVVVVVFILCWLPYHIVNLLDSLALDC 228
7tm_TAS2R cd13950
mammalian taste receptors type 2, member of the seven-transmembrane G protein-coupled receptor ...
38-311 1.05e-03

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: 40.24  E-value: 1.05e-03
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550  38 QFGVGTVANVFLFVHNFYPVLTGSQQSPRQVILSHMAVANILILFITIFPTNVMTFAPRNPPTDLKCKLEFFIRLVARST 117
Cdd:cd13950   9 EFLIGILGNGFIVLVNCIDWIKSRKLSSIDFILTSLAISRIGLLWTIILNSILSVFYPDIYLSGNVLRTLDILWMFLNHS 88
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550 118 NLCSTCVLSIYQFVTLVPVNRGKLI---LRAS--VPSLARYSCYSCWFFSVLNNIYIPIKVTGPQIADNNTdcRSKLFCF 192
Cdd:cd13950  89 SLWFATCLSVFYCLKIANFSHPFFLwlkWRINrvVPWLLLGSLLISLLISLPIVWVIYSVYQNNSKEESNN--TSKFQVK 166
                       170       180       190       200       210       220       230       240
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 46430550 193 TFGYSRVIFFLRIAYDATFmsIMVWTSVSMVLL-LHRHHHKMQHIFTTNRHYRGQAETRATSTILMLVVTFVSFYLLNFT 271
Cdd:cd13950 167 KTSYFYSFILLNLGSLIPF--ILSLISFFLLIFsLWRHTRQMQLNATGSRDPSTEAHIRAMKSMISFLILFIIYFLALII 244
                       250       260       270       280
                ....*....|....*....|....*....|....*....|
gi 46430550 272 CIIIQALVTDSHAFVrhWSEALVTGFPTISPLLLIFRKSK 311
Cdd:cd13950 245 TILSYSFLENKLAVL--FCEVLMALYPSGHSFILILGNPK 282
 
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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