WB, IP
H M R Mk
Endogenous
79
Rabbit
#O94763
8725
Product Information
Product Usage Information
Application | Dilution |
---|---|
Western Blotting | 1:1000 |
Immunoprecipitation | 1:50 |
Storage
Specificity / Sensitivity
Species Reactivity:
Human, Mouse, Rat, Monkey
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues near the carboxy terminus of human RMP protein. Antibodies are purified by protein A and peptide affinity chromatography.
Background
RMP (RPB5-Mediating Protein), also known as URI (Unconventional prefoldin RBP5 Interactor), was described as an unconventional member of the prefoldin (PFD) family of chaperones that are involved in actin and tubulin folding (1-4). Like conventional members of the α-class of PFDs, RMP contains N- and C-terminal α-helical coiled-coil structures connected by two β hairpins. In addition, RMP possesses an RPB5-binding segment and a long C-terminal acidic segment. It is posited that RMP exists as a component of a macromolecular complex within human cells and functions as a molecular scaffold to assemble a PFD complex containing other PFDs and proteins with functions in transcription and ubiquitination. Indeed, evidence is provided that RMP negatively modulates RNA polymerase II-dependent transcription by binding to TFIIF (5) and RBP5 (6) and is involved in mTOR signaling by coordinating the regulation of nutrient availability with gene expression (1). In accord with its ability to coordinate gene expression with nutrient availability, RMP was shown to be a mitochondrial substrate of S6K1. S6K1-mediated phosphorylation of RMP at Ser371 triggers a series of biochemical events that constitute a negative feedback loop, in part, aimed at restraining S6K1 survival signaling and ensuring that the mitochondrial threshold for apoptosis corresponds to availability of nutrients and growth factors (7).
- Gstaiger, M. et al. (2003) Science 302, 1208-12.
- Vainberg, I.E. et al. (1998) Cell 93, 863-73.
- Martín-Benito, J. et al. (2002) EMBO J 21, 6377-86.
- Geissler, S. et al. (1998) EMBO J 17, 952-66.
- Wei, W. et al. (2003) Cell Res 13, 111-20.
- Dorjsuren, D. et al. (1998) Mol Cell Biol 18, 7546-55.
- Djouder, N. et al. (2007) Mol Cell 28, 28-40.
Species Reactivity
Species reactivity is determined by testing in at least one approved application (e.g., western blot).
Western Blot Buffer
IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v BSA, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.
Applications Key
WB: Western Blotting IP: Immunoprecipitation
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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