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Conserved domains on  [gi|297139831|ref|NP_001160630|]
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vomeronasal 1 receptor Vmn1r98 [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 ...
14-297 1.01e-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: 132.85  E-value: 1.01e-36
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831   14 VALQLLLLCQFGVGTVANVFLFVHNFYPVLTGSKQRPRQVILSHMAVANALTLFLTIFpNNMMAFAPKTPPTELKCKLES 93
Cdd:pfam03402   1 VNIGIIFFSEVGVGISANSILLLFHIFMFFTGHRLRPTDLIIGHLSLIHLLMLLTMGI-IAMDAFGSQGRWDDTTCKFLI 79
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831   94 FSHLVGRSTNLCSTCVLGVHQFVTLVPLNRGKGKLVLRAsvtnmASYSSYSCWFFSVLS---NIHIPIKVSGPQITDNNT 170
Cdd:pfam03402  80 YLHRVLRGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKS-----PHHISGAFLFLWVLYmsiSSHLLLSIIATPNLTSSS 154
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831  171 DSKRKLFCSTSGFS-----VGIVLLQFAyDATFMSIMVWTSVSMVLLLHRHRQRMQHILTPNQNPRGQAETRATRTILML 245
Cdd:pfam03402 155 FIYVTQSCSILPMSysmqsLFSTLLASR-DVFLIGLMVLSSGYMVALLCRHKKQAQHLHGTSLSPKASPEQRATRTILLL 233
                         250       260       270       280       290
                  ....*....|....*....|....*....|....*....|....*....|..
gi 297139831  246 VVTFVSFYLLNFICIMLHVLFMHSHFFVRlVSEILTAVFPSISPLLLIFRDP 297
Cdd:pfam03402 234 MSFFVVMYILDSIVSYSRTMFKNDSIFYC-VQILVSHSYATVSPFVLISTEK 284
 
Name Accession Description Interval E-value
V1R pfam03402
Vomeronasal organ pheromone receptor family, V1R; This family represents one of two known ...
14-297 1.01e-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: 132.85  E-value: 1.01e-36
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831   14 VALQLLLLCQFGVGTVANVFLFVHNFYPVLTGSKQRPRQVILSHMAVANALTLFLTIFpNNMMAFAPKTPPTELKCKLES 93
Cdd:pfam03402   1 VNIGIIFFSEVGVGISANSILLLFHIFMFFTGHRLRPTDLIIGHLSLIHLLMLLTMGI-IAMDAFGSQGRWDDTTCKFLI 79
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831   94 FSHLVGRSTNLCSTCVLGVHQFVTLVPLNRGKGKLVLRAsvtnmASYSSYSCWFFSVLS---NIHIPIKVSGPQITDNNT 170
Cdd:pfam03402  80 YLHRVLRGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKS-----PHHISGAFLFLWVLYmsiSSHLLLSIIATPNLTSSS 154
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831  171 DSKRKLFCSTSGFS-----VGIVLLQFAyDATFMSIMVWTSVSMVLLLHRHRQRMQHILTPNQNPRGQAETRATRTILML 245
Cdd:pfam03402 155 FIYVTQSCSILPMSysmqsLFSTLLASR-DVFLIGLMVLSSGYMVALLCRHKKQAQHLHGTSLSPKASPEQRATRTILLL 233
                         250       260       270       280       290
                  ....*....|....*....|....*....|....*....|....*....|..
gi 297139831  246 VVTFVSFYLLNFICIMLHVLFMHSHFFVRlVSEILTAVFPSISPLLLIFRDP 297
Cdd:pfam03402 234 MSFFVVMYILDSIVSYSRTMFKNDSIFYC-VQILVSHSYATVSPFVLISTEK 284
7tm_V1R_pheromone cd13949
vomeronasal organ pheromone receptor type-1 family, member of the seven-transmembrane G ...
20-297 3.65e-36

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: 131.24  E-value: 3.65e-36
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831  20 LLCQFGVGTVANVFLFVHNFYPVLTGSKQRPRQVILSHMAVANALTLFLTIFPNNMMAFaPKTPPTELKCKLESFSHLVG 99
Cdd:cd13949    7 FFSEVGVGISANSILLLFHIFMFFRGHRPRSTDLIIGHLSLIHLLLLLTMGIIATDAFF-SWGGWDDITCKFLIYLHRVL 85
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831 100 RSTNLCSTCVLGVHQFVTLVPLNRGKGKLVLRAsvTNMASYSSYSCWFFSVLSNIHIPIKVSGPQITDNNTDSKRKLFCS 179
Cdd:cd13949   86 RGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKS--PHHISGAFLFLWVLYMLISSHLLVSIIATPNLTSNNFIYVTQSCS 163
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831 180 TSGFS-----VGIVLLQFaYDATFMSIMVWTSVSMVLLLHRHRQRMQHILTPNQNPRGQAETRATRTILMLVVTFVSFYL 254
Cdd:cd13949  164 ILPMSysmqsLFSTLLAF-RDVFLIGLMLLSSGYMVALLHRHKKQVQHLHSTSLSPKASPEQRATQTILLLMSFFVVMYI 242
                        250       260       270       280
                 ....*....|....*....|....*....|....*....|...
gi 297139831 255 LNFICIMLHVLFMHSHFFVRLVSEILTAVFPSISPLLLIFRDP 297
Cdd:cd13949  243 LDSIVFYSRTKFKNDSILYCVQIIVSHSYATVSPFVFLMTEKH 285
 
Name Accession Description Interval E-value
V1R pfam03402
Vomeronasal organ pheromone receptor family, V1R; This family represents one of two known ...
14-297 1.01e-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: 132.85  E-value: 1.01e-36
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831   14 VALQLLLLCQFGVGTVANVFLFVHNFYPVLTGSKQRPRQVILSHMAVANALTLFLTIFpNNMMAFAPKTPPTELKCKLES 93
Cdd:pfam03402   1 VNIGIIFFSEVGVGISANSILLLFHIFMFFTGHRLRPTDLIIGHLSLIHLLMLLTMGI-IAMDAFGSQGRWDDTTCKFLI 79
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831   94 FSHLVGRSTNLCSTCVLGVHQFVTLVPLNRGKGKLVLRAsvtnmASYSSYSCWFFSVLS---NIHIPIKVSGPQITDNNT 170
Cdd:pfam03402  80 YLHRVLRGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKS-----PHHISGAFLFLWVLYmsiSSHLLLSIIATPNLTSSS 154
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831  171 DSKRKLFCSTSGFS-----VGIVLLQFAyDATFMSIMVWTSVSMVLLLHRHRQRMQHILTPNQNPRGQAETRATRTILML 245
Cdd:pfam03402 155 FIYVTQSCSILPMSysmqsLFSTLLASR-DVFLIGLMVLSSGYMVALLCRHKKQAQHLHGTSLSPKASPEQRATRTILLL 233
                         250       260       270       280       290
                  ....*....|....*....|....*....|....*....|....*....|..
gi 297139831  246 VVTFVSFYLLNFICIMLHVLFMHSHFFVRlVSEILTAVFPSISPLLLIFRDP 297
Cdd:pfam03402 234 MSFFVVMYILDSIVSYSRTMFKNDSIFYC-VQILVSHSYATVSPFVLISTEK 284
7tm_V1R_pheromone cd13949
vomeronasal organ pheromone receptor type-1 family, member of the seven-transmembrane G ...
20-297 3.65e-36

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: 131.24  E-value: 3.65e-36
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831  20 LLCQFGVGTVANVFLFVHNFYPVLTGSKQRPRQVILSHMAVANALTLFLTIFPNNMMAFaPKTPPTELKCKLESFSHLVG 99
Cdd:cd13949    7 FFSEVGVGISANSILLLFHIFMFFRGHRPRSTDLIIGHLSLIHLLLLLTMGIIATDAFF-SWGGWDDITCKFLIYLHRVL 85
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831 100 RSTNLCSTCVLGVHQFVTLVPLNRGKGKLVLRAsvTNMASYSSYSCWFFSVLSNIHIPIKVSGPQITDNNTDSKRKLFCS 179
Cdd:cd13949   86 RGLSLCTTCLLSVLQAITLSPRSSCLAKFKHKS--PHHISGAFLFLWVLYMLISSHLLVSIIATPNLTSNNFIYVTQSCS 163
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831 180 TSGFS-----VGIVLLQFaYDATFMSIMVWTSVSMVLLLHRHRQRMQHILTPNQNPRGQAETRATRTILMLVVTFVSFYL 254
Cdd:cd13949  164 ILPMSysmqsLFSTLLAF-RDVFLIGLMLLSSGYMVALLHRHKKQVQHLHSTSLSPKASPEQRATQTILLLMSFFVVMYI 242
                        250       260       270       280
                 ....*....|....*....|....*....|....*....|...
gi 297139831 255 LNFICIMLHVLFMHSHFFVRLVSEILTAVFPSISPLLLIFRDP 297
Cdd:cd13949  243 LDSIVFYSRTKFKNDSILYCVQIIVSHSYATVSPFVFLMTEKH 285
7tm_GPCRs cd14964
seven-transmembrane G protein-coupled receptor superfamily; This hierarchical evolutionary ...
16-294 2.06e-07

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: 51.27  E-value: 2.06e-07
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831  16 LQLLLLCQFGVGTVANVFLFVHNFYPVLtgsKQRPRQVILSHMAVANALTLFLTIFPNNMMAFAPKTPPTELKCKLESFS 95
Cdd:cd14964    1 TTIILSLLTCLGLLGNLLVLLSLVRLRK---RPRSTRLLLASLAACDLLASLVVLVLFFLLGLTEASSRPQALCYLIYLL 77
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831  96 HLVGRSTNLCSTCVLGVHQFVTLvplnrGKGKLVLRASVTNMASYSSYSCWFFSVLSNIhIPIKVSGPQITDNNTDSKRK 175
Cdd:cd14964   78 WYGANLASIWTTLVLTYHRYFAL-----CGPLKYTRLSSPGKTRVIILGCWGVSLLLSI-PPLVGKGAIPRYNTLTGSCY 151
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831 176 LFCSTSGFSVGIVLLqfaydaTFMSIMVWTSVSMVLLLHRHRQRMQHIlTPNQNPRGQAETRATRTILMLVVTFVSFYLL 255
Cdd:cd14964  152 LICTTIYLTWGFLLV------SFLLPLVAFLVIFSRIVLRLRRRVRAI-RSAASLNTDKNLKATKSLLILVITFLLCWLP 224
                        250       260       270       280
                 ....*....|....*....|....*....|....*....|.
gi 297139831 256 NFICIMLHVL--FMHSHFFVRLVSEILTAVFPSISPLLLIF 294
Cdd:cd14964  225 FSIVFILHALvaAGQGLNLLSILANLLAVLASTLNPFIYCL 265
7tm_TAS2R cd13950
mammalian taste receptors type 2, member of the seven-transmembrane G protein-coupled receptor ...
207-298 3.36e-07

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: 50.64  E-value: 3.36e-07
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831 207 VSMVLLLH---RHRQRMQHILTPNQNPRGQAETRATRTILMLVVTFVSFYLLNFICIMLHVLFMHSHFFvrLVSEILTAV 283
Cdd:cd13950  190 ISFFLLIFslwRHTRQMQLNATGSRDPSTEAHIRAMKSMISFLILFIIYFLALIITILSYSFLENKLAV--LFCEVLMAL 267
                         90
                 ....*....|....*
gi 297139831 284 FPSISPLLLIFRDPK 298
Cdd:cd13950  268 YPSGHSFILILGNPK 282
7tm_TAS2R3 cd15020
mammalian taste receptor 2, subtype 3, member of the seven-transmembrane G protein-coupled ...
209-298 1.34e-05

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: 45.85  E-value: 1.34e-05
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831 209 MVLLLHRHRQRMQHILTPNQNPRGQAETRATRTILMLVVTFVSFYLLNFICIMLHvlFMHSHFFVRLVSEILTAVFPSIS 288
Cdd:cd15020  197 LILSLRRHTQQMQHHTTGSRDPSTEAHVRATKIILSFLLLFIFYFVAFFIGSSSF--FLPDTKLAIMIGELITAAYPSVH 274
                         90
                 ....*....|
gi 297139831 289 PLLLIFRDPK 298
Cdd:cd15020  275 SFILILQNNK 284
TAS2R pfam05296
Taste receptor protein (TAS2R); This family consists of several forms of eukaryotic taste ...
207-298 1.91e-05

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: 45.34  E-value: 1.91e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831  207 VSMVLLLH---RHRQRMQHILTPNQNPRGQAETRATRtilmLVVTFVSFYLLNFICIMLHVL--FMHSHFFVRLVSEILT 281
Cdd:pfam05296 198 ISFLLLIFslwRHTRQMQLNSTGFRDPSTEAHVRALK----SLISFLILYISYFLSFLISIIsfLLPKNKLAFIFGEIVT 273
                          90
                  ....*....|....*..
gi 297139831  282 AVFPSISPLLLIFRDPK 298
Cdd:pfam05296 274 YLYPSGHSFILILGNPK 290
7tm_TAS2R16 cd15017
mammalian taste receptor 2, subtype 16, member of the seven-transmembrane G protein-coupled ...
207-298 6.25e-05

mammalian taste receptor 2, subtype 16, member of the seven-transmembrane G protein-coupled receptor superfamily; This group includes the mammalian taste receptor 2 (TAS2R) subtype 16, 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: 320145  Cd Length: 285  Bit Score: 43.82  E-value: 6.25e-05
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831 207 VSMVLL---LHRHRQRMQHILTPNQNPRGQAETRATRTILMLVVTFVSFYLLNFICIMlHVLFMHSHFFvrLVSEILTAV 283
Cdd:cd15017  188 VSIILLmfsLCQHLGQMRHHSPGPCDPSTQAHTTALKSLAFFLIFFTSYFLTLIISII-KIIFVKNSWF--WAWEAVIYA 264
                         90
                 ....*....|....*
gi 297139831 284 FPSISPLLLIFRDPK 298
Cdd:cd15017  265 GISIHSTSLMLSSPK 279
7tm_classA_rhodopsin-like cd00637
rhodopsin receptor-like class A family of the seven-transmembrane G protein-coupled receptor ...
57-283 1.38e-04

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: 42.66  E-value: 1.38e-04
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831  57 HMAVANALTLFLTIFPNNMMAFAPKTPPTELKCKLESFSHLVGRSTNLCSTCVLGVHQFVTLV-PLNRGKGKLVLRASVT 135
Cdd:cd00637   39 NLAVADLLVGLLVIPFSLVSLLLGRWWFGDALCKLLGFLQSVSLLASILTLTAISVDRYLAIVhPLRYRRRFTRRRAKLL 118
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831 136 NMAsyssysCWFFSVLSNIhIPIKVSGPQITDNNTDSKRKLFCSTSGFSVGIVLLQFAYDATFMsIMVWTSVSMVLLLHR 215
Cdd:cd00637  119 IAL------IWLLSLLLAL-PPLLGWGVYDYGGYCCCCLCWPDLTLSKAYTIFLFVLLFLLPLL-VIIVCYVRIFRKLRR 190
                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 297139831 216 HRQRMQHILTPNQNPRG-QAETRATRTILMLVVTFVSFYLLNFICIMLHVLFMHSHFFVRLVSEILTAV 283
Cdd:cd00637  191 HRRRIRSSSSNSSRRRRrRRERKVTKTLLIVVVVFLLCWLPYFILLLLDVFGPDPSPLPRILYFLALLL 259
7tm_TAS2R41-like cd15018
mammalian taste receptor 2, subtype 41, member of the seven-transmembrane G protein-coupled ...
206-298 1.73e-04

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: 42.40  E-value: 1.73e-04
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831 206 SVSMVLL---LHRHRQRMQHILTPNQNPRGQAETRATRTILMLVVTFVSFYLlnfICIMLHVLFMHSHFFVRLVSEILTA 282
Cdd:cd15018  192 LISMVLLinsLRRHTKKMLHNLSSLQDPSTQAHIKALKALISFLILFASYFL---SLVLSAAGVFPSQEVRYWVWQIVIY 268
                         90
                 ....*....|....*.
gi 297139831 283 VFPSISPLLLIFRDPK 298
Cdd:cd15018  269 LCIAVHPFILLFSNPK 284
7tm_TAS2R14-like cd15019
mammalian taste receptor 2, subtype 14, member of the seven-transmembrane G protein-coupled ...
150-298 2.44e-04

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: 42.13  E-value: 2.44e-04
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831 150 VLSNIHIPIKVSGpqitdnntdSKRKLFCSTSGF----SVGIVLLQfayDATFMSIMVWTSVSMVLLL----HRHRQRMQ 221
Cdd:cd15019  139 VLINTHIDVWIDG---------YKRNMSYSSSSSnsaqFSKLLLFT---NTMFTFIPFTVSLTTFLLLifslWKHLKKMQ 206
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831 222 HILTPNQNPRGQAETRATRTilmlVVTFVSFYLLNFICIMLHVL---FMHSHFFVrLVSEILTAVFPSISPLLLIFRDPK 298
Cdd:cd15019  207 HNAKGSRDASTTAHIKALQT----VIAFLLLYTIFFLSLLVQVWsseLLEKNLII-LFCQVIGIAFPSGHSCVLILGNSK 281
7tm_1 pfam00001
7 transmembrane receptor (rhodopsin family); This family contains, amongst other ...
46-269 6.37e-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: 40.74  E-value: 6.37e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831   46 SKQRPRQVILSHMAVANALTLFLTIFPNNMMAFAPKTPPT-ELKCKLESFSHLVGRSTNLCSTCVLGVHQFVTLV-PLNR 123
Cdd:pfam00001  14 KLRTPTNIFLLNLAVADLLFSLLTLPFWLVYYLNHGDWPFgSALCKIVGALFVVNGYASILLLTAISIDRYLAIVhPLRY 93
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831  124 GKGKLVLRASVTNMAsyssysCWFFSVLSNIHIPIKVSGPQITDNNTDSKRKLFCSTSGFSVGIVLLQFAydATF---MS 200
Cdd:pfam00001  94 KRRRTPRRAKVLILV------IWVLALLLSLPPLLFGWTLTVPEGNVTVCFIDFPEDLSKPVSYTLLISV--LGFllpLL 165
                         170       180       190       200       210       220
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 297139831  201 IMVWTSVSMVLLLHRHRQRMQHiltpnqNPRGQAETRATRTILMLVVTFVSFYLLNFICIMLHVLFMHS 269
Cdd:pfam00001 166 VILVCYTLIIRTLRKSASKQKS------SERTQRRRKALKTLAVVVVVFILCWLPYHIVNLLDSLALDC 228
7tm_TAS2R7-like cd15023
mammalian taste receptor 2, subtypes 7 and 9, member of the seven-transmembrane G ...
209-298 7.36e-03

mammalian taste receptor 2, subtypes 7 and 9, member of the seven-transmembrane G protein-coupled receptor superfamily; This group includes the mammalian taste receptor 2 (TAS2R) subtypes 7 and 9, 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: 320151  Cd Length: 291  Bit Score: 37.45  E-value: 7.36e-03
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 297139831 209 MVLLLHRHRQRMQHILTPNQNPRGQAETRATRTILMLVVTFVSFYLLnfICIMLHVLFMHSHFFVRLVSEILTAVFPSIS 288
Cdd:cd15023  198 LLFSLVRHTKQMQLHATGFRDPSTEAHMRAIKAVIIFLLLLIVYYLA--FLVATSSYLIPQGKLVVMFGEIITLIFPSSH 275
                         90
                 ....*....|
gi 297139831 289 PLLLIFRDPK 298
Cdd:cd15023  276 SFILIMGNSK 285
 
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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