Human Clusterin / CLUS Protein, His Tag

分子別名（Synonym）

CLU,Clusterin,AAG4,APOJ,CLI,KUB1,SGP-2,SP-40,TRPM2

表達(dá)區(qū)間及表達(dá)系統(tǒng)（Source）

Human Clusterin, His Tag (CLU-H5227) is expressed from human 293 cells (HEK293). It contains AA Asp 23 - Glu 449 (Accession # NP_001822.3).

Predicted N-terminus: Asp 23

蛋白結(jié)構(gòu)（Molecular Characterization） 

This protein carries a polyhistidine tag at the C-terminus.

The protein has a calculated MW of 50.9 kDa. The protein migrates as 32-40 kDa under reducing (R) condition (SDS-PAGE).

內(nèi)毒素（Endotoxin）

Less than 1.0 EU per μg by the LAL method.

純度（Purity）

>95% as determined by SDS-PAGE.

制劑（Formulation）

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.

Contact us for customized product form or formulation.

重構(gòu)方法（Reconstitution）

Please see Certificate of Analysis for specific instructions.

For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

存儲(chǔ)（Storage）

For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Please avoid repeated freeze-thaw cycles.

This product is stable after storage at:

-20°C to -70°C for 12 months in lyophilized state;

-70°C for 3 months under sterile conditions after reconstitution.

背景（Background）

簇集蛋白（Clusterin，CLU）也稱(chēng)為二聚酸性糖蛋白（DAG蛋白）、睪酮抑制前列腺信息-2（TRPM-2）、硫酸化糖蛋白-2（SGP-2）和補(bǔ)體裂解抑制劑（CLI），是一種分泌型多功能糖蛋白，屬于簇集蛋白家族。簇蛋白前體的細(xì)胞內(nèi)裂解會(huì)去除信號(hào)肽，并產(chǎn)生大小相當(dāng)?shù)?/span>α和β鏈，這些鏈以80 kDa N糖基化二硫鍵連接的異二聚體的形式分泌。DAG蛋白主要在成年睪丸、卵巢、腎上腺、肝臟、心臟和大腦以及胚胎發(fā)育過(guò)程中的許多上皮組織中表達(dá)。聚簇蛋白涉及幾個(gè)基本的生物學(xué)事件，如細(xì)胞死亡、腫瘤進(jìn)展和神經(jīng)退行性疾病。在不同疾病狀態(tài)和體外系統(tǒng)中檢測(cè)到的簇集蛋白mR和蛋白質(zhì)水平的上調(diào)表明，它在膜脂質(zhì)循環(huán)、凋亡細(xì)胞死亡以及作為應(yīng)激誘導(dǎo)的分泌伴侶蛋白等方面發(fā)揮作用。