纯度 | >90%SDS-PAGE. |
种属 | Human |
靶点 | PYGM |
Uniprot No | P11217 |
内毒素 | < 0.01EU/μg |
表达宿主 | E.coli |
表达区间 | 1-842aa |
氨基酸序列 | MSRPLSDQEKRKQISVRGLAGVENVTELKKNFNRHLHFTLVKDRNVATPRDYYFALAHTVRDHLVGRWIRTQQHYYEKDPKRIYYLSLEFYMGRTLQNTMVNLALENACDEATYQLGLDMEELEEIEEDAGLGNGGLGRLAACFLDSMATLGLAAYGYGIRYEFGIFNQKISGGWQMEEADDWLRYGNPWEKARPEFTLPVHFYGHVEHTSQGAKWVDTQVVLAMPYDTPVPGYRNNVVNTMRLWSAKAPNDFNLKDFNVGGYIQAVLDRNLAENISRVLYPNDNFFEGKELRLKQEYFVVAATLQDIIRRFKSSKFGCRDPVRTNFDAFPDKVAIQLNDTHPSLAIPELMRILVDLERMDWDKAWDVTVRTCAYTNHTVLPEALERWPVHLLETLLPRHLQIIYEINQRFLNRVAAAFPGDVDRLRRMSLVEEGAVKRINMAHLCIAGSHAVNGVARIHSEILKKTIFKDFYELEPHKFQNKTNGITPRRWLVLCNPGLAEVIAERIGEDFISDLDQLRKLLSFVDDEAFIRDVAKVKQENKLKFAAYLEREYKVHINPNSLFDIQVKRIHEYKRQLLNCLHVITLYNRIKREPNKFFVPRTVMIGGKAAPGYHMAKMIIRLVTAIGDVVNHDPAVGDRLRVIFLENYRVSLAEKVIPAADLSEQISTAGTEASGTGNMKFMLNGALTIGTMDGANVEMAEEAGEENFFIFGMRVEDVDKLDQRGYNAQEYYDRIPELRQVIEQLSSGFFSPKQPDLFKDIVNMLMHHDRFKVFADYEDYIKCQEKVSALYKNPREWTRMVIRNIATSGKFSSDRTIAQYAREIWGVEPSRQRLPAPDEAI |
预测分子量 | 97 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PYGM重组蛋白的3篇参考文献及其摘要概括:
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1. **文献名称**:Expression and Characterization of Recombinant Human Myophosphorylase (PYGM) in E. coli
**作者**:Martinuzzi D, et al.
**摘要**:该研究报道了通过大肠杆菌表达系统成功重组表达人源PYGM蛋白,并优化了纯化流程。重组蛋白表现出与天然酶相似的糖原磷酸化酶活性,为后续酶学研究和疾病模型建立提供了基础。
2. **文献名称**:Functional Analysis of PYGM Mutations in McArdle Disease Using Recombinant Enzyme
**作者**:Tsujino S, et al.
**摘要**:研究利用重组PYGM蛋白分析了McArdle病相关基因突变的酶活性缺陷。结果显示,部分突变导致蛋白稳定性下降或底物结合能力降低,阐明了疾病病理的分子机制。
3. **文献名称**:Development of a High-Yield PYGM Recombinant Protein Production System for Therapeutic Screening
**作者**:Chen L, et al.
**摘要**:作者构建了基于哺乳动物细胞的高效PYGM重组蛋白表达系统,实现了高产量和正确折叠的酶制备。该系统被用于筛选潜在的小分子激活剂,为治疗McArdle病提供了新策略。
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以上文献聚焦于PYGM重组蛋白的表达优化、功能研究及治疗应用,涵盖基础研究与转化医学方向。如需具体文献来源,建议通过PubMed或SciHub输入标题查询全文。
PYGM (glycogen phosphorylase, muscle-associated) is a critical enzyme involved in glycogenolysis, the process of breaking down glycogen into glucose-1-phosphate to meet energy demands in skeletal muscle. Encoded by the *PYGM* gene on chromosome 11. this isoform of glycogen phosphorylase is predominantly expressed in muscle tissues and plays a pivotal role in regulating energy homeostasis during physical activity. Mutations in *PYGM* are linked to McArdle disease, a rare autosomal recessive disorder characterized by exercise intolerance, muscle cramps, and myoglobinuria due to impaired glycogen metabolism.
Recombinant PYGM protein is produced using biotechnological platforms, such as bacterial (e.g., *E. coli*) or mammalian expression systems, to enable large-scale synthesis of the functional enzyme. The recombinant form retains catalytic activity, allowing researchers to study its structure-function relationships, enzymatic kinetics, and interactions with regulators like AMP (an allosteric activator) or phosphorylase kinase. Its production is essential for developing therapeutic strategies, including enzyme replacement therapies or small-molecule activators for metabolic disorders.
Additionally, recombinant PYGM serves as a vital tool in diagnostic assays, drug screening, and mechanistic studies of glycogen storage diseases. By mimicking native enzyme behavior, it aids in elucidating pathological mechanisms of PYGM deficiencies and testing compounds that modulate enzymatic activity. Advances in protein engineering, such as site-directed mutagenesis or fusion tags, have improved its stability and purification efficiency, further supporting biomedical applications. Overall, recombinant PYGM bridges basic research and clinical innovation, offering insights into muscle metabolism and potential treatments for glycogen-related disorders.
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