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Product Information
Product Usage Information
CST recommends transfection with 100 nM SignalSilence® APC1 siRNA II 48 to 72 hours prior to cell lysis. For transfection procedure, follow the protocol provided by the transfection reagent manufacturer. Please feel free to contact CST with any questions on use.
Each vial contains the equivalent of 100 transfections, which corresponds to a final siRNA concentration of 100 nM per transfection in a 24-well plate with a total volume of 300 μl per well.
Storage
Specificity / Sensitivity
Species Reactivity:
Human
Product Description
Background
Eukaryotic cell proliferation depends strictly upon the E3 ubiquitin ligase activity of the anaphase promoting complex/cyclosome (APC/C), whose main function is to trigger the transition of the cell cycle from metaphase to anaphase. The APC/C complex promotes the assembly of polyubiquitin chains on substrate proteins in order to target these proteins for degradation by the 26S proteasome (1,2). The vertebrate APC/C complex consists of as many as 15 subunits, including multiple scaffold proteins, two catalytic subunits (APC2, APC11), and a number of proteins responsible for substrate recognition (3). All E3 enzymes, including APC/C, utilize ubiquitin residues activated by E1 enzymes and transferred to E2 enzymes. Research studies indicate that APC/C interacts with the E2 enzymes UBE2S and UBE2C via the RING-finger domain-containing subunit APC11 (4-6). APC/C function relies on multiple cofactors, including an APC/C coactivator formed by the cell division control protein 20 homolog (CDC20) and Cdh1/FZR1. The CDC20/Cdh1 coactivator is responsible for recognition of APC/C substrates through interaction with specific D-box and KEN-box recognition elements within these substrates (7-9).
The ubiquitously expressed anaphase-promoting complex subunit 1 (APC1) is the largest subunit of the APC/C complex (10). Research studies demonstrate that APC1 undergoes extensive phosphorylation on serine and threonine residues during the mitotic phase of the eukaryotic cell cycle (11).
- Qiao, X. et al. (2010) Cell Cycle 9, 3904-12.
- Harper, J.W. et al. (2002) Genes Dev 16, 2179-206.
- Chang, L. et al. (2014) Nature 513, 388-93.
- Carroll, C.W. and Morgan, D.O. (2002) Nat Cell Biol 4, 880-7.
- Gmachl, M. et al. (2000) Proc Natl Acad Sci U S A 97, 8973-8.
- Leverson, J.D. et al. (2000) Mol Biol Cell 11, 2315-25.
- Kraft, C. et al. (2005) Mol Cell 18, 543-53.
- Glotzer, M. et al. (1991) Nature 349, 132-8.
- Pfleger, C.M. and Kirschner, M.W. (2000) Genes Dev 14, 655-65.
- Jörgensen, P.M. et al. (2001) Gene 262, 51-9.
- Kraft, C. et al. (2003) EMBO J 22, 6598-609.
Species Reactivity
Species reactivity is determined by testing in at least one approved application (e.g., western blot).
Cross-Reactivity Key
H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected
Trademarks and Patents
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