TPSAB1, also known as tryptase alpha/beta-1, is a serine protease with trypsin-like specificity. It is the key neutral protease present in mast cells and is discharged upon the coupled activation-degranulation response of this cell type. This protein is enzymatically active only as a heparin-stabilized tetramer, and is resistant to all known endogenous proteinase inhibitors. Also, it is implicated as a mediator in the pathogenesis of asthma and other allergic and inflammatory disorders. Recombinant human TPSAB1, fused to His-Tag at C-terminal, expressed in insect cell and purified by using conventional chromatography techniques. Recombinant protein corresponding to aa31-275 of human TPSAB1, fused to His-Tag at C-terminal, expressed in insect cell. Accession: NP_003285. Molecular Weight: ~28.2kD (251aa), ~28-40kD (SDS-PAGE under reducing conditions) Amino Acid Sequence: IVGGQEAPRS KWPWQVSLRV HGPYWMHFCG GSLIHPQWVL TAAHCVGPDV KDLAALRVQL REQHLYYQDQ LLPVSRIIVH PQFYTAQIGA DIALLELEEP VNVSSHVHTV TLPPASETFP PGMPCWVTGW GDVDNDERLP PPFPLKQVKV PIMENHICDA KYHLGAYTGD DVRIVRDDML CAGNTRRDSC QGDSGGPLVC KVNGTWLQAG VVSWGEGCAQ PNRPGIYTRV TYYLDWIHHY VPKKPHHHHH H Storage and Stability: May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for 6 months after receipt at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
