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- 保存条件:
-20℃
- 保质期:
12个月
- 英文名:
Recombinant Calnexin (CNX)
- 库存:
100
- 供应商:
上海沪震
FOR IN VITRO AND RESEARCH USE ONLY, NOT FOR USE IN CLINICAL DIAGNOSTIC PROCEDURES!
Organism species Homo sapiens (Human)
Product No. RPA280Hu01
Source Prokaryotic expression
Host E.coli
Purity > 95%
UOM 50ug
Predicted Molecular Mass 58.8kDa
Predicted isoelectric point 4.7
Applications SDS-PAGE; WB; ELISA; IP.
Endotoxin Level <1.0EU per 1µg (determined by the LAL method)
Subcellular Location Endoplasmic reticulum membrane; Single-pass type I membrane protein. Endoplasmic reticulum. Melanosome.
Residues Thr239~Ala461 (Accession # P27824) with two N-terminal Tags, His-tag and GST-tag
Formulation Supplied as lyophilized form in PBS, pH7.4, containing 5% trehalose, 0.01% sarcosyl.
SEQUENCES
The target protein is fused with two N-terminal Tags, His-tag and GST-tag, its sequence is listed below.
钙联蛋白(CNX)重组蛋白MSPILGYWKI KGLVQPTRLL LEYLEEKYEE HLYERDEGDK WRNKKFELGL EFPNLPYYID GDVKLTQSMA IIRYIADKHN MLGGCPKERA EISMLEGAVL DIRYGVSRIA YSKDFETLKV DFLSKLPEML KMFEDRLCHK TYLNGDHVTH PDFMLYDALD VVLYMDPMCL DAFPKLVCFK KRIEAIPQID KYLKSSKYIA WPLQGWQATF GGGDHPPKSD GSTSGSGHHH HHHSAGLVPR GSTAIGMKET AAAKFERQHM DSPDLGTGGG SGIEGRGSMG YRGSEF-TL ILNPDNSFEI LVDQSVVNSG NLLNDMTPPV NPSREIEDPE DRKPEDWDER PKIPDPEAVK PDDWDEDAPA KIPDEEATKP EGWLDDEPEY VPDPDAEKPE DWDEDMDGEW EAPQIANPRC ESAPGCGVWQ RPVIDNPNYK GKWKPPMIDN PSYQGIWKPR KIPNPDFFED LEPFRMTPFS AIGLELWSMT SDIFFDNFII CADRRIVDDW ANDGWGLKKA A
USAGE
Reconstitute in sterile PBS, pH7.2-pH7.4.
STORAGE AND STABILITY
Storage: Avoid repeated freeze/thaw cycles. Store at 2-8oC for one month. Aliquot and store at -80oC for 12 months.
Stability Test: The thermal stability is described by the loss rate of the target protein. The loss 钙联蛋白(CNX)重组蛋白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 unde
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文献和实验APCS(SAP)分子特征、免疫调控机制与相关疾病及靶向治疗进展
血清淀粉样蛋白P成分(APCS/SAP/PTX2)是五聚体蛋白家族的重要成员,作为一种钙依赖性凝集素,它能与DNA、组蛋白及凋亡碎片等多种分子相互作用,协助清除受损细胞释放的核物质。依托重组蛋白、抗体开展的体外实验证实,SAP在淀粉样变性、纤维化及心血管疾病等多种免疫相关疾病的诊断与治疗中,发挥着灵敏的生物标志物作用。此外,作为一种关键的免疫调节因子,SAP还能结合细菌多糖、淀粉样沉积物和病毒蛋白,参与先天免疫调节。 APCS的表达分布 血清淀粉样蛋白P成分(APCS),它主要由肝细胞合成
,在连接固有免疫与适应性免疫中发挥关键作用。 生物学活性 IL-26具有多样的免疫调节功能。它能调控细胞因子表达,如刺激角质细胞高表达IL-8、上调大肠癌细胞CD54并抑制其IL-10分泌。对B细胞而言,IL-26的作用依赖微环境:单独或与抗CD40联用时抑制免疫球蛋白产生,但在IL-4协同下可促进IgG生成。此外,IL-26可与肝素结合但受其抑制。其受体分布特异,IL-10R2广泛表达,而IL-20R1主要局限于皮肤、心脏等组织。在炎症诱导方面,IL-26能刺激骨髓细胞释放促炎因子,并通过单核
、Glu、Ser和Thr的区域,且在该区域附近有某些特定的氨基酸,则该蛋白就会不稳定。这些PEST结构域的磷酸化导致钙的结合能力提高,从而利于钙依赖性蛋白酶对蛋白质的降解。这提示可以在缺乏PEST蛋白裂解系统的E.coli中表达PEST富含蛋白。 减少E.coli中重组蛋白裂解的策略有以下几种:(1)将蛋白质靶向细胞周质或培养基[145,186];(2)在较低的温度下培养细菌[187];(3)选用蛋白酶缺陷的菌株[188];(4)构建N-末端或C-末端融合蛋白[186];(5)将目的基因多拷贝串联
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