Purity ~90% (SDS-PAGE). HSPA5, also known as 78kD glucose-regulated protein precursor, is a member of the heat shock protein 70 (HSP70) family. It is localized in the lumen of the endoplasmic reticulum (ER), and is involved in the folding and assembly of proteins in the ER. As this protein interacts with many ER proteins, it may play a key role in monitoring protein transport through the cell. Recombinant mouse HSPA5 protein, fused to His-Tag at N-terminal, expressed in E. coli and purified by using conventional chromatography techniques. Source: Recombinant protein corresponding to aa20-655 of mouse HSPA5, fused to His-Tag at N-terminal, expressed in E. coli. Molecular Weight: ~72.9kD (659aa), Confirmed by MALDI-TOF AA