重组人CALR蛋白

人

人胚胎肾细胞（HEK293）

Met 1 - Ala 413

A DNA sequence encoding the human CALR (P27797) (Met1-Ala413) was expressed with a polyhistidine tag at the C-terminus.

> 95 % as determined by SDS-PAGE

The recombinant human CALR consists of 407 amino acids and predicts a molecular mass of 47.4 KDa. It migrates as an approximately 58 KDa band in SDS-PAGE under reducing conditions.

SSA; ENDOPLASMIC RETICULUM RESIDENT PROTEIN 60; HACBP; CRT; CRP55; CALRETICULIN); SICCA SYNDROME ANTIGEN A (AUTOANTIGEN RO; CALREGULIN; CC1QR; ERP60; GRP60; RO; HEL-S-99N; CALRETICULIN; CALR

Calreticulin

Calreticulin is a multifunctional protein. It acts as a main Ca(2+)-binding (storage) protein in the lumen of the endoplasmic reticulum. Calreticulin binds Ca2+ ions (a second messenger in signal transduction), rendering it inactive. The Ca2+ is bound with low affinity, but high capacity, and can be released on a signal. Located in storage compartments associated with the endoplasmic reticulum, calreticulin also binds to misfolded proteins and prevents them from being exported from the endoplasmic reticulum to the golgi apparatus. The amino terminus of calreticulin interacts with the DNA-binding domain of the glucocorticoid receptor and prevents the receptor from binding to its specific glucocorticoid response element. Calreticulin reduces the binding of androgen receptor to its hormone-responsive DNA element and inhibits androgen receptor and retinoic acid receptor transcriptional activities in vivo, as well as retinoic acid-induced neuronal differentiation. Therefore, calreticulin acts as a significant modulator of the regulation of gene transcription by nuclear hormone receptors.

Lyophilized from sterile PBS, pH 7.4
1. 5 % trehalose and mannitol are added as protectants before lyophilization.
2. Please contact us for any concerns or special requirements.

< 1.0 EU per μg of the protein as determined by the LAL method

Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.