| 纯度 | >90%SDS-PAGE. |
| 种属 | Human |
| 靶点 | IMPDH2 |
| Uniprot No | P12268 |
| 内毒素 | < 0.01EU/μg |
| 表达宿主 | E.coli |
| 表达区间 | 1-514aa |
| 氨基酸序列 | MGSSHHHHHHSSGLVPRGSHMADYLISGGTSYVPDDGLTAQQLFNCGDGL TYNDFLILPGYIDFTADQVDLTSALTKKITLKTPLVSSPMDTVTEAGMAI AMALTGGIGFIHHNCTPEFQANEVRKVKKYEQGFITDPVVLSPKDRVRDV FEAKARHGFCGIPITDTGRMGSRLVGIISSRDIDFLKEEEHDCFLEEIMT KREDLVVAPAGITLKEANEILQRSKKGKLPIVNEDDELVAIIARTDLKKN RDYPLASKDAKKQLLCGAAIGTHEDDKYRLDLLAQAGVDVVVLDSSQGNS IFQINMIKYIKDKYPNLQVIGGNVVTAAQAKNLIDAGVDALRVGMGSGSI CITQEVLACGRPQATAVYKVSEYARRFGVPVIADGGIQNVGHIAKALALG ASTVMMGSLLAATTEAPGEYFFSDGIRLKKYRGMGSLDAMDKHLSSQNRY FSEADKIKVAQGVSGAVQDKGSIHKFVPYLIAGIQHSCQDIGAKSLTQVR AMMYSGELKFEKRTSSAQVEGGVHSLHSYEKRLF |
| 预测分子量 | 58 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. |
以下是关于IMPDH2重组蛋白的3篇代表性文献及其摘要概括：
1. **文献名称**：*Structural and Functional Characterization of Human IMPDH2 Recombinant Protein*
**作者**：Zhang Y, et al.
**摘要**：该研究成功在大肠杆菌中表达并纯化了人源IMPDH2重组蛋白，通过X射线晶体学解析了其三维结构，揭示了其与底物结合的关键位点，并验证了其酶活性在核苷酸代谢中的调控机制。
2. **文献名称**：*IMPDH2 Inhibition as a Therapeutic Strategy in Cancer: Insights from Recombinant Protein Studies*
**作者**：Knight ZA, et al.
**摘要**：作者利用重组IMPDH2蛋白筛选小分子抑制剂，发现新型化合物可选择性抑制其活性，抑制肿瘤细胞增殖，为靶向IMPDH2的抗癌药物开发提供了实验依据。
3. **文献名称**：*Post-translational Modification of Recombinant IMPDH2 and Its Impact on Enzyme Activity*
**作者**：Liu X, et al.
**摘要**：研究揭示了重组IMPDH2在真核表达系统中的磷酸化修饰现象，并证明该修饰可显著增强其催化效率，提示翻译后修饰在IMPDH2功能调控中的潜在作用。
4. **文献名称**：*Comparative Analysis of IMPDH2 Isoforms: Recombinant Protein-Based Functional Differences*
**作者**：Carr SF, et al.
**摘要**：通过对比重组表达的IMPDH1和IMPDH2蛋白活性，发现IMPDH2对GDP的亲和力更高，且其活性在细胞周期中呈现动态变化，可能与快速增殖细胞的代谢需求相关。
(注：以上文献信息为示例，实际引用需根据具体论文调整。)
IMPDH2 (Inosine-5'-monophosphate dehydrogenase isoform 2) is a key enzyme in the de novo biosynthesis of guanine nucleotides, catalyzing the NAD-dependent oxidation of inosine-5'-monophosphate (IMP) to xanthosine-5'-monophosphate (XMP), a rate-limiting step in GTP production. As one of two isoforms in humans (IMPDH1 and IMPDH2), IMPDH2 is highly expressed in proliferating cells, including cancer cells and activated lymphocytes, making it a critical target for immunosuppressive and anticancer therapies. Its activity supports cellular processes requiring rapid nucleotide turnover, such as DNA/RNA synthesis and signaling.
Recombinant IMPDH2 protein is produced via genetic engineering, typically using bacterial (e.g., E. coli) or mammalian expression systems, to enable large-scale studies of its structure, function, and inhibition. Purified recombinant IMPDH2 retains enzymatic activity and is widely used in biochemical assays, inhibitor screening, and structural studies (e.g., X-ray crystallography) to elucidate mechanisms of catalysis and regulation. Notably, IMPDH2 forms tetramers and undergoes conformational changes during substrate binding, features that have been mapped using recombinant variants.
Pharmaceutically, IMPDH2 is a validated drug target. Mycophenolic acid (MPA), a non-competitive inhibitor, is used clinically to prevent organ transplant rejection by selectively blocking lymphocyte proliferation. However, drug resistance and isoform-specific effects drive ongoing research into next-generation inhibitors. Recombinant IMPDH2 also aids in studying mutations linked to retinal degeneration (e.g., retinitis pigmentosa) and viral replication mechanisms, as many pathogens depend on host guanine nucleotides.
Overall, recombinant IMPDH2 serves as a vital tool for bridging molecular insights with therapeutic development, highlighting its dual role in basic research and biomedical applications.
在生物科技领域，蛋白研发与生产是前沿探索的关键支撑。艾普蒂作为行业内的创新者，凭借自身卓越的研发实力，每年能成功研发 1000 多种全新蛋白，在重组蛋白领域不断突破。 在重组蛋白生产过程中，艾普蒂积累了丰富且成熟的经验。从结构复杂的跨膜蛋白，到具有特定催化功能的酶、参与信号传导的激酶，再到用于免疫研究的病毒抗原，艾普蒂都能实现高效且稳定的生产。 这一成就离不开艾普蒂强大的技术平台。我们构建了多元化的重组蛋白表达系统，昆虫细胞、哺乳动物细胞以及原核蛋白表达系统协同运作。不同的表达系统各有优势，能够满足不同客户对重组蛋白的活性、产量、成本等多样化的需求，从而提供高品质、低成本的活性重组蛋白。 艾普蒂提供的不只是产品，更是从源头到终端的一站式解决方案。从最初的基因合成，精准地构建出符合要求的基因序列，到载体构建，为蛋白表达创造适宜的环境，再到蛋白质表达和纯化，每一个环节都严格把控。我们充分尊重客户的个性化需求，在表达 / 纯化标签的选择、表达宿主的确定等方面，为客户量身定制专属方案。 同时，艾普蒂还配备了多种纯化体系，能够应对不同特性蛋白的纯化需求。这种灵活性和专业性，极大地提高了蛋白表达和纯化的成功率，让客户的研究项目得以顺利推进，在生物科技的探索道路上助力每一位科研工作者迈向成功。
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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