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Serpin Substrate Kits

Med Discovery is offering active human recombinant protease substrate proteins for biochemical in vitro assays. Serpins (Serine protease inhibitors) are natural protease inhibitors. Their specificity towards proteases is mainly defined by the so called 'reactive site loop' (RSL), a domain within the serpin protein serving as specific substrate bait for the protease. We introduced a ten amino acid RSL region (P6-P4') of different serpin proteins in our RFPS system to create substrates mimicking the reactive site region of these serpins.

Applications

Use as protease specific substrates
Identify cleavage specificity of novel proteases
Identify putative inhibitory serpins of novel proteases

MD-RFPS-02 Serpin Substrate Kit

Serpin
Substrate sequence (RSL P6-P4)
a-1-ANTITRIPSYN, AAT
a-2-ANTIPLASMIN, A2AP
a-2-1-ANTICHYMOTRYPSIN, ACT
ANTITHROMBIN-III, AT3
MONOCYTE/NEUTROPHIL ELASTASE INHIBITOR, MNEI
PROTEIN C INHIBITOR, PCI
KALLISTATIN, PI4
PLASMINOGEN ACTIVATOR INHIBITOR-1, PAI1
PLASMINOGEN ACTIVATOR INHIBITOR-2, PAI2
CYTOPLASMIC ANTIPROTEINASE 3, PI9
SQUAMOUS CELL CARCINOMA ANTIGEN 1, SCCA1
SQUAMOUS CELL CARCINOMA ANTIGEN 2, SCCA2
LEAIPMSIPP
IAMSRMSLSS
VKITLLSALV
VVIAGRSLNP
GIATFCMLMP
TIFTFRSARL
FAIKFFSAQT
VIVSARMAPE
GVMTGRTGHG
CFVVAECCME
VVGFGSSPAS
VVVVELSSPS

The kit contains 50 µg of five serpin substrates chosen by the customer from following list plus 50 µg of the control substrate CS containing a poly-glycine linker region resistant against most proteases. Proteins are prepared from E. coli. The purity as determined by SDS-PAGE and Western Blot is >98%. Supplied in solid lyophilized form.