The C-terminus of Hsc70-interacting protein (CHIP, STUB1) is a co-chaperone protein and functional E3 ubiquitin ligase that links the polypeptide binding activity of Hsp70 to the ubiquitin proteasome system (1).
Cytoplasmic CHIP protein contains three 34aa TPR (tetratricopeptide repeat) domains at its amino terminus and a C-terminal U-box domain.
CHIP interacts with the molecular chaperones Hsc70-Hsp70 and Hsp90 through its TPR domain, while E3 ubiquitin ligase activity is confined to the U-box domain (2,3).
The binding of CHIP to Hsp70 can stall the folding of Hsp70 client proteins and concomitantly facilitate the U-box dependent ubiquitination of Hsp70-bound substrates (4-6).
CHIP appears to play a central role in cell stress protection (7) and is responsible for the degradation of disease-related proteins that include cystic fibrosis transmembrane conductance regulator (4), p53 (8), huntingtin and Ataxin-3 (9), Tau protein (10), and alpha-synuclein (11).
Applications:Suitable for use in Western Blot, Immunohistochemistry and ELISA.
Other applications not tested.
Recommended Dilution:Western Blot: 1:500-1:2000, incubate membrane with diluted primary antibody in TBS, 5% milk, 0.1% Tween 20 at 4°C with gentle shaking, overnight
Immunohistochemistry: 1:50-1:200ELISA (peptide): 1:20,000-1:40,000Optimal dilutions to be determined by the researcher.
Storage and Stability:May be stored at 4°C for short-term only.
Aliquot to avoid repeated freezing and thawing.
Store at -20°C.
Aliquots are stable for 12 months after receipt.
For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
仕様
Size:200ul
Host:rabbit
Source Antibody:human
Grade:Affinity Purified
Purity:Purified by immunoaffinity chromatography from serum.
Form:Supplied as a liquid in PBS, pH 7.4, 0.02% sodium azide, 50% glycerol.
Specificity:Recognizes endogenous levels of total human STUB1. Species Crossreactivity: Mouse, rat and monkey
Isotype:IgG
Calc Applications Abbrev:E IHC WB
Calc Crossreactivity:Hu Mk Mo Rt
Immunogen:Synthetic peptide corresponding to human STUB1. Species sequence homology: Zebrafish (90%), Bovine (100%), Equine (100%), Sheep (100%), Canine (100%), Chicken (100%), Xenopus (100%)