AP5501

AIFM1 (Ser-116), phospho-specific

Rabbit Polyclonal

Price

Size

Species Reactivity

$295

100 μl

66 kDa

Enlarge

Western blot image of human jurkat cells untreated (lanes 1 & 3) or treated with calyculin A (100 nM, 30 min.) (lanes 2 and 4). The blot was probed with rabbit polyclonals anti-AIFM1 (C-terminal region) at 1:500 (lanes 1 & 2) and anti-AIFM1 (Ser-116) phospho-specific antibody at 1:1000 (lanes 3 & 4).

Application

Dilution

ELISA

1:2000

1:1000

End user should determine optimal dilution for their particular applications and experiments.Western blot membranes were incubated with diluted antibody in 5% non-fat milk, PBS, 0.04% Tween20 for 1hour at room temperature.

Background

Apoptosis-inducing factor (AIFM1, AIF, PDCD8) is a ubiquitously expressed flavoprotein that plays a critical role in caspase-independent apoptosis. AIFM1 is expressed as a 66 kDa precursor protein before being N-terminally cleaved to 62 kDa and localized to the mitochondrial intermembrane space. In response to apoptotic stimuli, AIFM1 is released from the mitochondrial intermembrane as a 57 kDa fragment that can translocate to the nucleus. Treatment of isolated nuclei with recombinant AIFM1 leads to early apoptotic events, such as chromatin condensation and large-scale DNA fragmentation. Studies of AIFM1 knockout mice have shown that the apoptotic activity of AIFM1 is cell type and stimuli-dependent. Also, AIFM1 was required for embryoid body cavitation, representing the first wave of programmed cell death during embryonic morphogenesis. Structural analysis of AIFM1 revealed two regions, an oxidoreductase activity and a DNA binding domain. AIFM1 has dual functions, a pro-apoptotic activity in the nucleus via its DNA binding and an anti-apoptotic activity via the scavenging of free radicals through its oxidoreductase activity.

Background References

Daugas, E. et al. (2000) FEBS Lett. 476:118.

Lipton, S.A. and Bossy-Wetzel, E. (2002) Cell 111:147.

Delavallee, L. et al. (2011) IUBMB Life. 63(4):221.

Immunogen

Phospho-AIFM1 (Ser-116) synthetic peptide (coupled to carrier) corresponding to amino acids surrounding Ser-116 in human AIFM1. This site is conserved in rat and mouse AIFM1, but the amino acids surrounding the site are not well conserved. The site is not found in AIFM2 and AIFM3.

Buffer and Storage

Rabbit polyclonal, affinity-purified antibody is supplied in 100µl phosphate-buffered saline, 50% glycerol, 1 mg/ml BSA, and 0.05% sodium azide. Store at –20°C. Stable for 1 year.

Specificity

The antibody was cross adsorbed to unphosphorylated AIFM1 (Ser-116) peptide before affinity purification using phospho-AIFM1 (Ser-116) peptide. This antibody antibody detects a triplet at 66, 62, and 57 kDa* protein on SDS-PAGE immunoblots of human Jurkat cells treated with calyculin A. This reactivity is not observed after lambda phosphatase treatment to dephosphorylated AIFM1.

*All molecular weights (MW) are confirmed by comparison to Bio-Rad Rainbow Markers and to western blot mobilities of known proteins with similar MW.

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