Creative Biolabs is offering the most comprehensive services for antibody development projects. With strict regulation and effective execution, we are dedicated to providing the most valuable solutions to complete your projects.
HighlightsCreative Biolabs is offering the most comprehensive services for antibody development projects. With strict regulation and effective execution, we are dedicated to providing the most valuable solutions to complete your projects.
HighlightsCreative Biolabs has established a broad range of platforms for developing novel antibodies or equivalents. These cutting-edge technologies enable our scientists to meet your demands from different aspects and tailor the most appropriate solution that contributes to the success of your projects.
HighlightsWith deep understanding in antibody-related realms and extensive project experience, Creative Biolabs offers a variety of references to help you learn more about our capacities and achievements, including infographic, flyer, case study, peer-reviewed publications, and all kinds of knowledge that can assist your projects. You are also welcome to contact us directly for more specific solutions.
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Glutamate ionotropic receptor AMPA type subunit 3 (GRIA3) is a transmembrane ion channel subunit encoded by GRIA3 gene, which is mainly assembled into tetramer receptor complex at the postsynaptic membrane of neurons, and mediates central synaptic signal transmission. There are significant structural differences between the protein and the soluble cytoplasmic signaling factor with membrane-free anchoring helix structure. Its protein skeleton consists of three core transmembrane helices and a reentrant membrane loop structure, and it also has a large extracellular ligand binding domain and amino-terminal domain, which provides a complete structural basis for receptor assembly and transmitter recognition. GRIA3, as the core pore-forming component of AMPA-type glutamate receptor, can bind extracellular glutamate transmitter and start cation transmembrane permeability process, and mediate excitatory synaptic signal transmission in central nervous system. If the tetramer receptor containing GRIA3 is assembled abnormally and its function is lost, it will lead to the loss of control of cation flux in synaptic membrane and break the excitability steady state of neurons. GRIA3 can maintain the electrophysiological stability of different central nervous system microenvironments by regulating the conductivity level of basic ions, and is an important regulator of the excitability balance of neural networks. Different subtypes of neurons can be differentiated to assemble GRIA family subunits to form receptor complexes with different gating dynamics characteristics, which can accurately adapt to the specific functional requirements of local synaptic signal transmission. GRIA3 located in the cell membrane can stably bind with other AMPA receptor subunits through non-covalent bonds, and its extracellular conserved ligand binding domain can specifically recognize endogenous glutamate molecules, effectively avoiding non-specific binding, and ensuring the specificity and accuracy of synaptic excitation signal transmission.
The variation of gene sequence in GRIA3 coding region can change the binding affinity of glutamate ligand or the assembly efficiency of receptor tetramer, and then lead to abnormal changes in synaptic transmission characteristics of neurons. Although various AMPA receptor subunits have overlapping functions, other GRIA family homologous subtypes cannot completely reproduce all the structural features and signal regulation functions of GRIA3 receptor complexes. The expression level of GRIA3 in body tissues is highly compatible with synaptic plasticity, which makes Gria3 an important target for the study of ion channel structure mechanism and synaptic signal regulation.
GRIA3 is anchored to the neuronal lipid bilayer as a complete integrated membrane protein, which will not dissociate into soluble cytoplasmic components after assembly, and is completely different from intracellular soluble signal molecules in structure. The unique multiple transmembrane topological structure endows GRIA3 with dual regulatory functions, which can not only shape the cation permeability of postsynaptic membrane, but also regulate the excitability threshold of neural circuits. When the functional assembly level of GRIA3 decreased, the glutamate-mediated cationic conductance effect was significantly weakened, and the basic electrical activity pattern of neurons shifted. Therefore, GRIA3 is the core research object of the mechanism research of central excitatory ion channel and the analysis of neural signal network.
Fig. 1 Cryo‑EM structure and subunit assembly patterns of AMPA‑type glutamate receptor complexes containing GRIA3 (GluA3) subunit, alongside topological diagrams of receptor auxiliary subunits.1
The biological functions of integral membrane GRIA3 glutamate receptor subunit are focused on sustained glutamate ligand binding and cation pore assembly for synaptic signal transmission:
Creative Biolabs offers purified GRIA3 membrane protein samples produced under unified preparation workflows, including full-length GRIA3 constructs and isolated extracellular ligand-binding domain variants. Truncated polypeptide fragments cannot support complete glutamate recognition and tetramer assembly activity, while full-length constructs fit research focused on excitatory ion channel subunit interactions. All batches receive uniform quality screening. Functional assessments may only be performed under simulated lipid bilayer microenvironment setups. Consistent extracellular ligand pocket and transmembrane pore structural features are preserved across batches to support comparative laboratory analysis between experimental groups. Full-length GRIA3 membrane samples retain intact glutamate binding cleft and inter-subunit contact surfaces after standardized purification, which supports reliable detection of weak and transient subunit-ligand binding events in comparative membrane functional analysis.
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Creative Biolabs provides cell research models with adjustable GRIA3 expression levels, suitable for structural observation of multi-spanning glutamate receptor subunits and synaptic ligand interaction research. Sample assessment covers sustained target membrane expression detection and preliminary subunit-glutamate binding analysis, enabling side-by-side comparison of receptor assembly behavior under varying membrane expression abundances. These cell models can be paired with diverse laboratory analysis schemes to track shifts in cation flux efficiency alongside changing target membrane protein levels.
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Anti-GRIA3 recombinant antibodies are generated via standardized protein preparation workflows, compatible with routine laboratory detection techniques for postsynaptic plasma membrane localization mapping and tetrameric receptor complex identification. The antibody series works with common laboratory detection reagents to support multi-dimensional observation of target membrane distribution within neural tissue samples.
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Beyond catalog products, Creative Biolabs offers specialized custom services for GRIA3 research:
GRIA3 may act as an integral multi-spanning glutamate receptor subunit and assemble tetrameric ion pores to mediate excitatory cation flux upon glutamate binding.
GRIA3 expression status might alter postsynaptic cation permeability, serving as a key mediator of central neural excitability biological processes.
No, all GRIA3 related products and services are strictly for research use only, and cannot be applied in clinical workflows. All material design and functional screening are optimized exclusively for basic laboratory research, without meeting clinical application criteria.
Offerings include full-length GRIA3 membrane protein, target-specific recombinant antibodies and tunable expression cell research models, supporting research on glutamate ligand binding and synaptic ion flux transduction.
Laboratory analysis schemes may include glutamate ligand binding assays to assess ligand recognition capacity under simulated lipid bilayer environments.
