Eukaryotic elongation factor 2 (eEF2) catalyzes the translocation of peptidyl-tRNA from the A site to the P site on the ribosome. eEF2 kinase (eEF2K) phosphorylates and inactivates eEF2, resulting in the inhibition of peptide-chain elongation. eEF2K is normally dependent on Ca2+ ions and calmodulin, and can be activated by PKA in response to elevated cAMP levels during cell stress- or starvation-related conditions. Regulation of eEF2K occurs through phosphorylation at multiple sites. Ser-78 phosphorylation is required for calmodulin binding and eEF2K activity, while phosphorylation of Ser-500 is required for Ca2+/calmodulin-independent kinase activity. Thr-348 is an autophosphorylation site that is required for kinase activity. Inhibitory phosphorylation may also regulate eEF2K, since phosphorylation at Ser-359 by SAPK4/p38delta causes inactivation of eEF2K.
Human recombinant eEF2K is a full length protein (95 kDa) expressed in E. Coli. The protein is detected by rabbit polyclonal anti-eEF2K (C-terminus) antibody (Cat.#EP4661) and anti-eEF2K (Thr-348) (Cat.#EP4411).
References

Recombinant human eEF2K untreated (lanes 1 & 4) and auto-phosphorylated in the presence of Ca2+ and Calmodulin (lanes 2 & 5). The eEF2K was dephosphorylated with lambda phosphatase (lanes 3 & 6). The blots were probed with anti-eEF2K (N-terminus) (lanes 1-3) or anti-eEF2K (Thr-348) (lanes 4-6). (Images provided by Dr. Kevin Dalby in the Dept. of Pharmacy at the University of Texas.)
The products are are safely shipped at ambient temperature for both domestic and international shipments. Each product is guaranteed to match the specifications as indicated on the corresponding technical data sheet. Please store at -20C upon arrival for long term storage.
*All molecular weights (MW) are confirmed by comparison to Bio-Rad Rainbow Markers and to western blotmobilities of known proteins with similar MW.
This kit contains:
KIT SUMMARY
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2、目前市场上重点的蛋白质概股有:荣之联、科华生物、江中药业、浙江医药等。
3、目前生产蛋白类药物的上市公司有28家:
①东宝生物主生产:胶原蛋白应用剂型的开发如胶原蛋白创可贴、胶原蛋白喷雾剂等。
②利德曼主要生产:生化诊断试剂种类有肝功类、肾功类、血脂与脂蛋白类、血糖类、心肌酶类等,具体产品包括“肌酸激酶MB同工酶测定试剂盒”、“腺苷脱氨酶测定试剂盒”和“低密度脂蛋白胆固醇测定试剂盒”等,能够满足医疗机构、体检中心等各种生化检测需求。另一类产品生物化学原料,主要品种包括诊断酶、抗原、抗体、缓冲剂、酶底物、培养基等,生物化学原料是生产体外诊断试剂的主要原料,并可以应用于制药、化工和食品加工等领域。
③安科生物主要生产:肿瘤蛋白P185及瘦素生物检测试剂。
④沃森生物主要生产:人血白蛋白、人免疫球蛋白(肌注)、人乙肝免疫球蛋白等。
⑤博雅生物公司主要产品:涵盖白蛋白、免疫球蛋白和凝血因子三大类。⑦华兰生物工程重庆有限公司主要生产:人血白蛋白和静注人免疫球蛋白的生产文号,破伤风免疫球蛋白、静脉注射用人纤维蛋白原。
⑥上海莱士主要生产:人血白蛋白、静注射人免疫球蛋白、人凝血酶原复合物、人凝血因子VIII、冻干人凝血酶、冻干人纤维蛋白原、外用冻干人纤维蛋白粘合剂等。
⑦深圳市海普瑞药业有限公司主要生产用于治疗纤维化、炎症、肾病、肿瘤、血液和免疫系统性疾病的原创药物。
⑧海正药业公司主要生产:大分子药物已有抗体药物、人重组白蛋白、人重组胰岛素、融合蛋白、基因工程疫苗等类型的产品。
⑨其它生产厂家的信息有:天坛生物,华兰生物,华神集团,人福医药,益佰制药,江中药业,恒瑞医药,南京瑞尔医药有限公司,千红制药,,紫光古汉,岳阳兴长,金城医药,华北制药,三峡新材,华海医药,ST生化,舒泰神,四环生物,交大昂立,常山药业等医药公司。展开
最近留意了几个消息,发现生产线一家比一家大,结合最近国家在搞药品上市许可持有人制度试点,五年以后这行业竞争会有多激烈,产能会不会过剩的。
百迈博生产线6000升(3000*2)
东耀生产线10000升(2000*5)
三生制药生产线30000升(5000*6)
信达生物生产线>15000升
百泰生物生产线4000升
药明康德生产线2000升(不知现在规模有没有扩大)
还有很多低调的公司可能规模更大……
将来在国内,按照现有的产量结合所有生产线的总和生产出来的重组蛋白会不会以白菜价进入市场的,
而没答案
帮帮我
给我提供答案
考研细胞的题答案
E.coliExpressionSystems.pdf(136.05k)

