DFF, CT

Apoptosis is related to many diseases and induced by a family of cell death receptors and their ligands. Cell death signals are transduced by death domain containing adapter molecules and members of the caspase family of proteases. These death signals finally cause the degradation of chromosomal DNA by activated DNase. A human 45kD DNA fragmentation factor (DFF45) was identified recently which was cleaved by caspase-3 during apoptosis (1). Mouse homologue of human DFF45 was identified as a DNase inhibitor designated ICAD (2,3). Upon cleavage of DFF45/ICAD, a caspase activated deoxyribonuclease (DFF40/CAD) is released and activated and eventually causes the degradation of DNA in the nuclei (2-5). Therefore, the cleavage of DFF45/ICAD, which causes DFF40/CAD activation and DNA degradation, is the hallmark of apoptotic cell death.\n \nThis polyclonal antibody can be used for detection of DFF45 and one of the cleaved fragments of DFF45 by Western blot (6) at 1:1000 to 1:2000 dilution and for immunoprecipitation. HeLa whole cell lysate can be used as positive control and a 45kD band should be detected in non-apoptotic cells.

Prices direct from United States Biological

Quick response times

Exclusive Biosave savings/discounts

SPECIFICATIONS

Catalog Number

D3224

Size

100ug

Applications

IP, WB

Hosts

Rabbit

Reactivities

Hum

Form

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

P Type

Pab

Purity

Purified IgG

Isotype

IgG

References

1. Liu X, Zou H, Slaughter C, Wang X. DFF, a heterodimeric protein that functions downstream of caspase-3 to trigger DNA fragmentation during apoptosis. Cell 1997;89:175-184 2. Enari M, Sakahira H, Yokoyama H, Okawa K, Iwamatsu A, Nagata S. A caspase-activated DNase that degrades DNA during apoptosis, and its inhibitor ICAD. Nature 1998;391:43-50 3. Sakahira H, Enari M, Nagata S. Cleavage of CAD inhibitor in CAD activation and DNA degradation during apoptosis. Nature 1998;391:96-99 4. Liu X, Li P, Widlak P, Zou H, Luo X, Garrard WT, Wang X. The 40-kDa subunit of DNA fragmentation factor induces DNA fragmentation and chromatin condensation during apoptosis. Proc Natl Acad Sci USA 1998;95:8461-6. 5. Mukae N, Enari M, Sakahira H, Fukuda Y, Inazawa J, Toh H, Nagata S. Molecular cloning and characterization of human caspase-activated DNase. Proc Natl Acad Sci USA 1998;95:9123-8. 6. Tang D, Kidd VJ. Cleavage of DFF-45/ICAD by multiple caspases is essential for its function during apoptosis. J Biol Chem 1998;273:28549-52 \n

Additional Info

A 45kD band should be detected in non-apoptotic cells.