ionotropic receptor 67c [Drosophila melanogaster]
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
List of domain hits
| Name | Accession | Description | Interval | E-value | |||
| 7tm_GPCRs super family | cl28897 | seven-transmembrane G protein-coupled receptor superfamily; This hierarchical evolutionary ... |
279-357 | 8.24e-03 | |||
seven-transmembrane G protein-coupled receptor superfamily; This hierarchical evolutionary model represents the seven-transmembrane (7TM) receptors, often referred to as G protein-coupled receptors (GPCRs), which transmit physiological signals from the outside of the cell to the inside via G proteins. GPCRs constitute the largest known superfamily of transmembrane receptors across the three kingdoms of life that respond to a wide variety of extracellular stimuli including peptides, lipids, neurotransmitters, amino acids, hormones, and sensory stimuli such as light, smell and taste. All GPCRs share a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. However, some 7TM receptors, such as the type 1 microbial rhodopsins, do not activate G proteins. Based on sequence similarity, GPCRs can be divided into six major classes: class A (the rhodopsin-like family), class B (the Methuselah-like, adhesion and secretin-like receptor family), class C (the metabotropic glutamate receptor family), class D (the fungal mating pheromone receptors), class E (the cAMP receptor family), and class F (the frizzled/smoothened receptor family). Nearly 800 human GPCR genes have been identified and are involved essentially in all major physiological processes. Approximately 40% of clinically marketed drugs mediate their effects through modulation of GPCR function for the treatment of a variety of human diseases including bacterial infections. The actual alignment was detected with superfamily member cd14966: Pssm-ID: 475119 Cd Length: 259 Bit Score: 38.25 E-value: 8.24e-03
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| Name | Accession | Description | Interval | E-value | |||
| 7tmD_STE3 | cd14966 | fungal a-factor pheromone receptor STE3, member of the class D family of seven-transmembrane G ... |
279-357 | 8.24e-03 | |||
fungal a-factor pheromone receptor STE3, member of the class D family of seven-transmembrane G protein-coupled receptors; This subfamily represents the a-factor pheromone receptor encoded by the STE3 gene, which is required for pheromone sensing and mating in haploid cells of the yeast Saccharomyces cerevisiae. The STE3-encoded seven-transmembrane domain receptor is a member of the class D GPCRs. Class D receptors are composed of two major subfamilies: Ste2 and Ste3. These two GPCRs (Ste2 and Ste3) sense the polypeptide mating pheromones, alpha-factor and a-factor, which activate a G protein-coupled receptors on the surface of the opposite yeast-mating haploid-types (MATa and MAT-alpha), respectively. Activation of these receptors by pheromones leads to activation of the mitogen-activated protein kinase (MAPK) signal transduction cascades, G1 cell cycle arrest, and polarized cell growth in the direction of the partner cell (a process called shmooing), which ultimately induces cell-cell fusion and the formation of a diploid zygote. Like all GPCRs, these pheromone mating factor receptors possess the same basic architecture of seven-transmembrane (7TM) domains and share common signaling mechanisms; however, there is no significant sequence similarity either between Ste2 and Ste3, or between these two receptors and the other 7TM GPCRs. Thus, STE2 and STE3 represent phylogenetically distinct groups. Pssm-ID: 320097 Cd Length: 259 Bit Score: 38.25 E-value: 8.24e-03
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| Name | Accession | Description | Interval | E-value | |||
| 7tmD_STE3 | cd14966 | fungal a-factor pheromone receptor STE3, member of the class D family of seven-transmembrane G ... |
279-357 | 8.24e-03 | |||
fungal a-factor pheromone receptor STE3, member of the class D family of seven-transmembrane G protein-coupled receptors; This subfamily represents the a-factor pheromone receptor encoded by the STE3 gene, which is required for pheromone sensing and mating in haploid cells of the yeast Saccharomyces cerevisiae. The STE3-encoded seven-transmembrane domain receptor is a member of the class D GPCRs. Class D receptors are composed of two major subfamilies: Ste2 and Ste3. These two GPCRs (Ste2 and Ste3) sense the polypeptide mating pheromones, alpha-factor and a-factor, which activate a G protein-coupled receptors on the surface of the opposite yeast-mating haploid-types (MATa and MAT-alpha), respectively. Activation of these receptors by pheromones leads to activation of the mitogen-activated protein kinase (MAPK) signal transduction cascades, G1 cell cycle arrest, and polarized cell growth in the direction of the partner cell (a process called shmooing), which ultimately induces cell-cell fusion and the formation of a diploid zygote. Like all GPCRs, these pheromone mating factor receptors possess the same basic architecture of seven-transmembrane (7TM) domains and share common signaling mechanisms; however, there is no significant sequence similarity either between Ste2 and Ste3, or between these two receptors and the other 7TM GPCRs. Thus, STE2 and STE3 represent phylogenetically distinct groups. Pssm-ID: 320097 Cd Length: 259 Bit Score: 38.25 E-value: 8.24e-03
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