APIP2 (Apaf 1 Interacting Protein 2, CG129, MMRP19)

The mammalian homologues of the key cell death gene CED-4 in C. elegans has been identified recently from human and mouse and designated Apaf 1 (for apoptosis protease-activating factor 1) (1,2). Apaf 1 binds to cytochrome c (Apaf2) and Caspase-9 (Apaf3), which leads to Caspase-9 activation. Activated caspase-9 in turn cleaves and activates caspase-3 that is one of the key proteases, being responsible for the proteolytic cleavage of many key proteins in apoptosis (3). Recently, Cho et al (4) have identified a new Apaf 1 Interactiong Protein (APIP) also known as CG129 and MMRP19, as a negative regulator of ischemic injury. APIP competes with Caspase-9 binding site of Apaf 1. APIP is predicted to code for a 204aa. An isoform of APIP, APIP2 encodes a 242aa protein, which is an alternative splicing variant differing in its N-terminus from APIP. APIP transcript is ubiquitously expressed in most adult tissue with high expression in skeletal muscle, heart, and kidney.\n\nApplications:\nSuitable for use in ELISA. Other applications not tested.\n\nRecommended Dilution:\nELISA: 1:100-1:1000\nOptimal dilutions to be determined by the researcher.\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

A2298-79M

Size

100ul

Applications

ELISA

Hosts

Rabbit

Reactivities

Hum

Form

Supplied as a liquid, 0.025% sodium azide, 50% glycerol.

P Type

Pab

Purity

Serum.

Isotype

IgG

References

1. Cecconi F, Alvarez-Bolado G, Meyer BI, Roth KA, Gruss P. Apaf1 (CED-4 homolog) regulates programmed cell death in mammalian development. Cell 1998; 94:727-37 2. Zou H, Henzel WJ, Liu X, Lutschg A, Wang X. Apaf-1, a human protein homologous to C. elegans CED-4, participates in cytochrome c-dependent activation of caspase-3. Cell 1997; 90:405-13 3. Li P, Nijhawan D, Budihardjo I, Srinivasula SM, Ahmad M, Alnemri ES, Wang X. Cytochrome c and dATP-dependent formation ofApaf-1/caspase-9 complex initiates an apoptotic protease cascade. Cell 1997; 91:479-89 4. Cho D-H, Hong Y-M, Lee H-J, Woo H-N, Pyo J-O, Mak TW, Jung Y-K. Induced Inhibition of Ischemic/Hypoxic Injury by APIP, a Novel Apaf-1-interacting protein. J Biol Chem, published on July 15, 2004 as Manuscript M405747200.

Additional Info

Recognizes human APIP2. Species sequence homology: mouse and rat.