Human COL1A1 Protein, His Tag, low endotoxin (MALS verified)

表達(dá)區(qū)間及表達(dá)系統(tǒng)（Source）

Human COL1A1 Protein, His Tag (CO1-H5243) is expressed from human 293 cells (HEK293). It contains AA Leu 1229 - Leu 1464 (Accession # P02452).

Predicted N-terminus: His

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

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

The protein has a calculated MW of 28.9 kDa. The protein migrates as 30-33 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.

內(nèi)毒素（Endotoxin）

Less than 0.01 EU per μg by the LAL method.

純度（Purity）

>90% as determined by SDS-PAGE.

>90% as determined by SEC-MALS.

制劑（Formulation）

Supplied as 0.2 μm filtered solution in 50 mM Tris, 150 mM NaCl, pH7.5 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）

I型膠原蛋白是皮膚、骨骼和肌腱等結(jié)締組織中含量最豐富的結(jié)構(gòu)蛋白。它被合成為一種前膠原分子，其特征是一個(gè)300 nm的三螺旋結(jié)構(gòu)域，兩側(cè)是球形的N端和C端前肽。三螺旋結(jié)構(gòu)域包含Gly-Xaa-Yaa三聯(lián)體，其中Xaa和Yaa通常分別是脯氨酸和羥脯氨酸。非螺旋前肽被前膠原N-和C-蛋白酶活性去除，使成熟的三螺旋可以自組裝成膠原纖維，為組織提供抗拉強(qiáng)度。I型膠原蛋白是一種由兩條α1（I）鏈和一條α2（I）鏈路組成的異三聚體，盡管也有人描述了由三條相同的α1（Ⅰ）鏈組成的同源三聚體。