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HighlightsIntroduction of GPR33
GPR33 is a protein that is encoded by the GPR33 gene. It was found to be transcribed during the late phase of rat cytomegalovirus infection in rat embryo fibroblasts. In the past years, GPR33, a member of the G-protein-coupled receptor family, has been identified as a pseudogene in humans. It has been reported that the human GPR33 gene contains a premature stop codon within the coding sequence of the second intracellular loop but no other obvious structural defects, suggesting a recent inactivation of the receptor.
| Basic Information of GPR33 | |
| Protein Name | Putative G-protein coupled receptor GPR33 |
| Gene Name | GPR33 |
| Aliases | N/A |
| Organism | Homo sapiens (Human) |
| UniProt ID | Q49SQ1 |
| Transmembrane Times | 7 |
| Length (aa) | 333 |
| Sequence | MDLINSTDYLINASTLVRNSTQFLAPASKMIIALSLYISSIIGTITNGLYLWVLRFKMKQTVNTLLFFHLILSYFISTMILPFMATSQLQDNHWNFGTALCKVFNGTLSLGMFTSVFFLSAIGLDRYLLTLHPVWSQQHRTPRWASSIVLGVWISAAALSIPYLIFRETHHDRKGKVTCQNNYAVSTNWESKEMQASRQWIHVACFISRFLLGFLLPFFIIIFCYERVASKVKERSLFKSSKPFKVMMTAIISFFVCWMPYHIHQGLLLTTNQSLLLELTLILTVLTTSFNTIFSPTLYLFVGENFKKVFKKSILALFESTFSEDSSVERTQT |
Function of GPR33 Membrane Protein
Studies have shown that all G-protein-coupled receptors (GPCR) share a common molecular architecture consisting of seven transmembrane domains (TMD) connected by three extra- and three intracellular loops (ICL). As an orphan member of the chemokine-like receptor family, GPR33 was identified as a pseudogene in human but as an intact gene in mouse. The human GPR33 gene contains a premature stop codon within the coding sequence of the second intracellular loop but no other obvious structural defects, which suggests a recent inactivation of the receptor. It has been reported that the inactivation of this chemoattractant GPCR not only occurs in humans but also in several great ape and rodent species. GPR33 also plays an important role in signal transduction through cell membranes. What’s more, it has a similar structure of ChemR23, a chemokine receptor for chemerin and SIV coreceptor, indicating that GPR33 has a potential role in the cellular defense that was lost during human evolution.
Fig.1 GPCR structure.
Application of GPR33 Membrane Protein in Literature
This article finds that GPR33 is highly expressed in dendritic cells (DC). Murine GPR33 expression is regulated by the activity of toll-like receptors (TLR) and AP-1/NF-kappaB signaling pathways in cell culture and in vivo. It indicates that GPR33 plays an important role in innate immunity which became dispensable during human evolution most likely due to past or balancing selection.
This article indicates that different receptor- and context-specific consequences of Asp-Arg-Tyr (DRY) mutations. It also reveals GPR33 as a new example illustrating missense mutations as a first step in the pseudogenization process.
This article suggests that the coincidental inactivation and its fixation in several species of distantly related mammalian orders indicating a selective pressure on this chemoattractant receptor gene.
GPR33 Preparation Options
To offer high-quality membrane protein products for global customers, we have developed a robust Magic™ membrane protein production platform. Our professional scientists will work closely with you and help you choose the most suitable program design for your particular project. Aided by our versatile Magic™ anti-membrane protein antibody discovery platform, we also provide customized anti-GPR33 antibody development services.
Based on years of experience and advanced platform, Creative Biolabs is committed to providing professional membrane protein preparation services in the most high-quality and cost-effective way. We are happy to leverage our first-class techniques and extensive expertise in this field to satisfy every client’s specific demands. Except for the production of GPR33 protein, we also provide other membrane protein products for worldwide customers. For more details and information, please feel free to contact us.
All listed services and products are For Research Use Only. Do Not use in any diagnostic or therapeutic applications.
