Mouse Complement C3a Protein, His Tag (HPLC verified) 

分子別名（Synonym）

Complement Component C3a,Complement C3a,C3a

表達(dá)區(qū)間及表達(dá)系統(tǒng)（Source）

Mouse Complement C3a Protein, His Tag (COA-M5243) is expressed from human 293 cells (HEK293). It contains AA Ser 671 - Arg 748 (Accession # P01027 ).

Predicted N-terminus: Ser 671

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 11.1 kDa. The protein migrates as 13-14 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 1.0 EU per μg by the LAL method.

純度（Purity）

>95% as determined by SDS-PAGE.

>90% as determined by SEC-HPLC.

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）

C3 is the major complement component serum. It is mainly synthesized by macrophages and liver. C3 plays a central role in the activation of the complement system. Its processing by C3 convertase is the central reaction in both classical and alternative complement pathways. It is cleaved into two fragments, C3a and C3b. C3a anaphylatoxin is a mediator of local inflammatory process. In chronic inflammation, acts as a chemoattractant for neutrophils. After activation C3b can bind covalently, via its reactive thioester, to cell surface carbohydrates or immune aggregates. It induces the contraction of smooth muscle, increases vascular permeability and causes histamine release from mast cells and basophilic leukocytes.