Greater than 85% as determined by SDS-PAGE.
Syntaxin-12 is a SNARE (Soluble NSF Attachment Protein Receptor) protein that mediates vesicle fusion at endosomes. The human recombinant form of Syntaxin-12 is typically expressed in Escherichia coli (E. coli) and purified using conventional chromatography techniques . The recombinant protein is often fused to a His-tag at the N-terminus to facilitate purification .
Syntaxin-12 interacts with various proteins to facilitate its role in vesicle transport. One of its key interactions is with the ATP-binding cassette transporter A1 (ABC1), which aids in the cellular release of choline-phospholipids and cholesterol to apolipoprotein A-I (apoA-I) . Additionally, Syntaxin-12 is involved in the biogenesis of platelet α-granules, which are essential for hemostasis and other physiological processes . It interacts physically and functionally with VPS33B and VPS16B, proteins that are crucial for the transport of newly synthesized α-granule proteins through megakaryocyte endosomal compartments .