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- 详细信息
- 文献和实验
- 技术资料
- 保存条件:
-20℃
- 保质期:
12个月
- 英文名:
Recombinant Ras Suppressor Protein 1 (RSU1)
- 库存:
1000
- 供应商:
上海信裕
| Organism species | Homo sapiens (Human) |
| Product No. | |
| Source | Prokaryotic expression |
| Host | E.coli |
| Purity | > 95% |
| UOM | 50ug |
| Predicted Molecular Mass | 35.1kDa |
| Concentration | n/a |
| Applications | SDS-PAGE; WB; ELISA; IP. |
| Endotoxin Level | <1.0EU per 1µg (determined by the LAL method) |
| Residues | Ser2~Arg277 with two N-terminal Tags, His-tag and T7-tag |
| Formulation | Supplied as lyophilized form in PBS, pH7.4, containing 5% trehalose, 0.01% sarcosyl. |
SKSLKKLVE ESREKNQPEV DMSDRGISNM LDVNGLFTLS HITQLVLSHN KLTMVPPNIA ELKNLEVLNF FNNQIEELPT QISSLQKLKH LNLGMNRLNT LPRGFGSLPA LEVLDLTYNN LSENSLPGNF FYLTTLRALY LSDNDFEILP PDIGKLTKLQ ILSLRDNDLI SLPKEIGELT QLKELHIQGN RLTVLPPELG NLDLTGQKQV FKAENNPWVT PIADQFQLGV SHVFEYIRSE TYKYLYGRHM QANPEPPKKN NDKSKKISRK PLAAKNR
Stability Test: The thermal stability is described by the loss rate of the target protein. The loss rate was determined by accelerated thermal degradation test, that is, incubate the protein at 37oC for 48h, and no obvious degradation and precipitation were observed. (Referring from China Biological Products Standard, which was calculated by the Arrhenius equation.) The loss of this protein is less than 5% within the expiration date under appropriate storage condition.
Protein bands: 10kDa, 14kDa, 18kDa, 22kDa, 26kDa, 33kDa, 44kDa and 70kDa.
Double intensity bands: The 26kDa, 18kDa, 10kDa bands are at double intensity to make location and size approximation of proteins of interest quick and easy.
Ready-to-use: No need to heat, dilute or add reducing agents before use.
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文献和实验肝刺激因子对人肝癌细胞BEL-7402 p21ras表达的影响
摘要:从雄性初断乳SD大鼠肝匀浆中提取肝刺激因子(HSS)并加以部分纯化, 观察其促人肝癌细胞增殖活性及对p21ras蛋白表达的影响。结果表明: (1) HSS具有明显的促人肝癌细胞增殖活性, 其分子量为14~20 kD; (2) HSS可提高p21ras蛋白表达, 具有时间-效应关系, 并与EGF呈协同作用; (3)HSS调节p21ras蛋白表达具有剂量-效应关系, 且呈现出饱和性。鉴于我们已报道HSS上调EGF受体蛋白和基因表达这一事实, 本实验结果进一步说明, HSS促人肝癌肝
机溶剂抽提) c、去除样品中核酸(加入核酸酶消化或者使核酸沉淀) d、抑制样品中蛋白水解酶(加入蛋白酶抑制剂、低温下快速第一步分离或在蛋白酶缺陷宿主中表达重组蛋白) 表 2 样品中有害杂质及去除办法 杂质 害处 预防
一、原核蛋白表达及纯化 1、怎样提高E.coli中6′His标签蛋白的表达水平? 6 × His标签蛋白的表达水平低原因可能为:目标蛋白有毒或不稳定,或者是细菌生长过程中不能维持表达结构。有时候,插入片段的5’端序列编码了干扰转录或翻译的元件(比如有反向重复序列而形成茎环结构,掩盖了Shine-Dalgarno序列),在这种情况下,有必要检查和修改表达序列。改变培养基和宿主菌也可能会有所帮助。 外源性蛋白的表达会使宿主菌生长迟缓。高速的转录、翻译重组蛋白所需要的代谢消耗,导致宿主菌生长
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