Omi, HtrA2 (C2) (High Temperature Requirement Protein A2, HtrA2, Omi Stress-regulated Endoprotease, PARK13, PRSS25, Serine Protease 25, Serine Protease Htra2, Mitochondrial Precursor, Serine Proteinase Omi) (Biotin)

Inhibitor of apoptosis proteins (IAPs) were initially identified in baculoviruses as proteins that inhibit apoptosis of the host cells to allow time for viral replication. Cellular homologues containing at least one baculoviral IAP repeat (BIR) motif essential for their anti-apoptosis activity have been identified in yeasts and higher organisms and often act by binding and inhibiting processed caspases. The activity of these proteins can be modulated by the expression of proteins such as Smac/DIABLO and XAF-1 which displace or prevent the binding of caspases by IAPs. Recently, a mitochondrial serine protease termed Omi/HtrA2 has been found to bind IAPs. Similar to Smac, Omi possesses a conserved IAP-binding motif, but acts to cleave IAPs to irreversibly inactivate IAPs and promote apoptosis.\n\nApplications:\nSuitable for use in Western Blot. Other applications not tested.\n\nRecommended Dilution:\nWestern Blot: 0.5-1ug/ml\nOptimal dilutions to be determined by the researcher.\n\nPositive Control:\nU937 lysate\n\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

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SPECIFICATIONS

Catalog Number

O6350-03A

Size

50ug

Applications

WB

Hosts

Rabbit

Reactivities

Hum

Form

Supplied as a liquid in PBS, 0.02% sodium azide.

P Type

Pab

Purity

Purified

Isotype

IgG

References

1. Crook NE, Clem RJ, and Miller LK. An apoptosis inhibiting baculovirus gene with a zinc finger like motif. J. Virol. 1993; 67:2168-2174. 2. Liston P, Fong WG, and Korneluk RG. The inhibitors of apoptosis: there is more to life than Bcl2. Oncogene 2003; 22:8568-80. 3. Vaux DL and Silke J. Mammalian mitochondrial IAP binding proteins. Biochem. Biophys. Res. Comm. 2003; 304:499-504. 4. Suzuki Y, Imai Y, Nakayama H, et al. A serine protease, HtrA2, is released from the mitochondria and interacts with XIAP, inducing cell death. Mol. Cell 2001; 8:613-21. 5. Yang QH, Church-Hajduk R, Ren J, et al. Omi/HtrA2 catalytic cleavage of inhibitor of apoptosis (IAP) irreversibly inactivates IAPs and facilitates caspase activity in apoptosis. Genes Dev. 2003; 17:1487-96.

Additional Info

Recognizes human HtrA2/Omi (C2).