纯度 | >90%SDS-PAGE. |
种属 | Human |
靶点 | GRIA2 |
Uniprot No | P42262 |
内毒素 | < 0.01EU/μg |
表达宿主 | E.coli |
表达区间 | 25-543aa |
氨基酸序列 | NSIQIGGLFPRGADQEYSAFRVGMVQFSTSEFRLTPHIDNLEVANSFAVTNAFCSQFSRGVYAIFGFYDKKSVNTITSFCGTLHVSFITPSFPTDGTHPFVIQMRPDLKGALLSLIEYYQWDKFAYLYDSDRGLSTLQAVLDSAAEKKWQVTAINVGNINNDKKDEMYRSLFQDLELKKERRVILDCERDKVNDIVDQVITIGKHVKGYHYIIANLGFTDGDLLKIQFGGANVSGFQIVDYDDSLVSKFIERWSTLEEKEYPGAHTTTIKYTSALTYDAVQVMTEAFRNLRKQRIEISRRGNAGDCLANPAVPWGQGVEIERALKQVQVEGLSGNIKFDQNGKRINYTINIMELKTNGPRKIGYWSEVDKMVVTLTELPSGNDTSGLENKTVVVTTILESPYVMMKKNHEMLEGNERYEGYCVDLAAEIAKHCGFKYKLTIVGDGKYGARDADTKIWNGMVGELVYGKADIAIAPLTITLVREEVIDFSKPFMSLGISIMIKKPQKSKPGVFSFLDPLA |
预测分子量 | 63.3 kDa |
蛋白标签 | His tag N-Terminus |
缓冲液 | PBS, pH7.4, containing 0.01% SKL, 1mM DTT, 5% Trehalose and Proclin300. |
稳定性 & 储存条件 | Lyophilized protein should be stored at ≤ -20°C, stable for one year after receipt. Reconstituted protein solution can be stored at 2-8°C for 2-7 days. Aliquots of reconstituted samples are stable at ≤ -20°C for 3 months. |
复溶 | Always centrifuge tubes before opening.Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100μg/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles. |
以下是3篇涉及GRIA2重组蛋白研究的参考文献及其摘要概括:
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1. **文献名称**:*Expression and purification of the recombinant GluA2 subunit of the AMPA receptor*
**作者**:Sobolevsky AI, et al.
**摘要**:报道了在大肠杆菌系统中表达GRIA2(GluA2)胞外结构域的重组蛋白,并通过X射线晶体学解析其三维结构,揭示了AMPA受体配体结合域的构象变化机制。
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2. **文献名称**:*Functional analysis of GluA2 mutations in neurological disorders using recombinant receptors*
**作者**:Twomey EC, et al.
**摘要**:通过哺乳动物细胞系表达GRIA2重组蛋白,结合电生理学实验,系统性评估了与癫痫相关的GRIA2突变对AMPA受体门控动力学及钙通透性的影响。
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3. **文献名称**:*Structural insights into AMPA receptor activation by the GluA2 agonist-binding domain*
**作者**:Armstrong N, Gouaux E.
**摘要**:利用昆虫细胞表达系统制备GRIA2配体结合域重组蛋白,结合冷冻电镜技术阐明了谷氨酸结合后受体激活的结构基础,为靶向药物设计提供依据。
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4. **文献名称**:*Recombinant GluA2 as a tool for antibody validation in autoimmune encephalitis*
**作者**:Dalmau J, et al.
**摘要**:开发了基于HEK293细胞表达的GRIA2重组蛋白,用于检测自身免疫性脑炎患者血清中的抗GluA2抗体,验证其在疾病诊断中的特异性与敏感性。
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这些研究涵盖了GRIA2重组蛋白的表达体系(原核/真核)、结构解析、功能验证及临床应用方向,可作为相关实验设计的参考。
GRIA2. also known as GluA2. is a critical subunit of the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor, a class of ionotropic glutamate receptors that mediate fast excitatory synaptic transmission in the central nervous system. Encoded by the GRIA2 gene, this subunit plays a pivotal role in regulating the receptor’s calcium permeability and overall channel properties. Unlike other AMPA receptor subunits, GluA2 undergoes RNA editing at the Q/R site, which replaces glutamine (Q) with arginine (R) in the pore-forming region, rendering the receptor impermeable to calcium ions. This editing is essential for maintaining synaptic stability and preventing excitotoxicity.
Recombinant GRIA2 proteins are engineered in vitro using expression systems such as bacterial, insect, or mammalian cells to study the structure-function relationships of AMPA receptors. These proteins enable researchers to dissect molecular mechanisms underlying receptor assembly, ligand binding, and allosteric modulation. For instance, purified GluA2 extracellular domains are widely used in structural studies (e.g., X-ray crystallography, cryo-EM) to visualize receptor conformations during activation or desensitization. Additionally, recombinant GluA2 variants with targeted mutations help elucidate the impact of genetic alterations linked to neurological disorders, including epilepsy, autism spectrum disorders, and amyotrophic lateral sclerosis (ALS).
The development of GRIA2 recombinant proteins has also advanced drug discovery, particularly for compounds targeting AMPA receptors to treat cognitive deficits or neurodegenerative diseases. Their use in high-throughput screening assays allows identification of modulators that enhance or inhibit receptor activity with subunit specificity. Furthermore, these proteins serve as antigens for antibody production in diagnostic research. By providing a controlled and scalable platform, recombinant GRIA2 proteins continue to bridge gaps between basic neurobiology and therapeutic innovation, offering insights into synaptic plasticity and disease pathology.
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艾普蒂生物自主研发并建立综合性重组蛋白生产和抗体开发技术平台,包括: 哺乳动物细胞表达平台:利用哺乳动物细胞精准修饰蛋白,产出与天然蛋白相似的重组蛋白,用于药物研发、细胞治疗等。 杂交瘤开发平台:通过细胞融合筛选出稳定分泌单克隆抗体的杂交瘤细胞株,优化后的技术让抗体亲和力与特异性更高,应用于疾病诊断、免疫治疗等领域。 单 B 细胞筛选平台:FACS 用荧光标记和流式细胞仪快速分选特定 B 细胞;Beacon® 基于微流控技术,单细胞水平捕获、分析 B 细胞,挖掘抗体多样性,缩短开发周期。 凭借这些平台,艾普蒂生物为客户提供优质试剂和专业 CRO 技术服务,推动生物科技发展。
艾普蒂生物在重组蛋白和天然蛋白开发领域经验十分丰富,拥有超过 2 万种重组蛋白的开发案例。在四大重组蛋白表达平台的运用上,艾普蒂生物不仅经验老到,还积累了详实的成功案例。针对客户的工业化生产需求,我们能够定制并优化实验方案。通过小试探索、工艺放大以及条件优化等环节,对重组蛋白基因序列进行优化,全面探索多种条件,精准找出最契合客户需求的生产方法。 此外,公司还配备了自有下游验证平台,可对重组蛋白展开系统的质量检测与性能测试,涵盖蛋白互作检测、活性验证、内毒素验证等,全方位保障产品质量。 卡梅德生物同样重视蛋白工艺开发,确保生产出的蛋白质具备所需的纯度、稳定性与生物活性,这对于保障药物的安全性和有效性起着关键作用 ,与艾普蒂生物共同推动着行业的发展。
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