The GSTP1 inactivation through CpG hypermethylation is frequent in pituitary adenomas and may be a factor in aggressive pituitary tumor behavior. GSTP1 is may be a transcriptional target of the p53 tumor suppressor gene. Single-nucleotide polymorphism in GSTP1 is linked to modified protein binding, which influence GSTP1's contribution to carcinogen and drug metabolism, and possibly disease pathogenesis and/or drug response. GST-pi might have central roles in proliferation of androgen-independent human prostate cancer cells.
GSTP1 Human Recombinant fused with 36 amino acid His tag at N-terminus produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 246 amino acids
(1-210 a.a.) And having a molecular mass of 27.4kDa.
The GSTP1 is purified by proprietary chromatographic techniques.
The GSTP1 solution (0.5mg/ml) contains 20mM Tris-HCl buffer (pH7.0), 30% glycerol, 1mM EDTA and 0.1mM PMSF.
Store at 4°C if entire vial will be used within 2-4 weeks.
Store, frozen at -20°C for longer periods of time.
For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Avoid multiple freeze-thaw cycles.
Specific activity is > 80 units/mg, and is defined as the amount of enzyme that conjugate 1.0 u mole of 1-chloro-2,4-dinitrobenzene (CDNB) with reduced glutathione per minute at pH 6.5 at 25°C.
Amino acid sequence
MRGSHHHHHH GMASMTGGQQ MGRDLYDDDD KDRWGSMPPY TVVYFPVRGR CAALRMLLAD QGQSWKEEVV TVETWQEGSL KASCLYGQLP KFQDGDLTLY QSNTILRHLG RTLGLYGKDQ QEAALVDMVN DGVEDLRCKY ISLIYTNYEA GKDDYVKALP GQLKPFETLL SQNQGGKTFI VGDQISFADY NLLDLLLIHE VLAPGCLDAF PLLSAYVGRL SARPKLKAFL ASPEYVNLPI NGNGKQ.