CHIP [untagged]

Customer Notice Regarding Orders for Ubiquigent Products: From September 2020, orders for Ubiquigent products must total at least $700 to enable prompt delivery. Orders less than this amount may be subject to unpredictable wait times. Please contact us for further details.

Species Reactivity: Human  

Source: E. coli expression  

Formula: 50 mM HEPES pH 7.5, 150 mM sodium chloride, 2 mM dithiothreitol, 10% glycerol  

Concentration: 1 mg/ml  

Molecular Weight: ~35 kDa  

Protein Sequence: Accession number: NP_005852. For full protein sequence information download the Certificate of Analysis pdf.  

Quality Control Protein Identification: Confirmed by mass spectrometry.  

Quality Control Activity: E3 Ligase Assay:  The activity of CHIP was validated by its ability to form free polyubiquitin chains in the presence of the E2 enzymes UBE2N, UBE2V1 and ubiquitin (Windheim et al., 2008). Incubation of CHIP enzyme in the presence of ubiquitin, UBE2N, UBE2V1, and ATP at 30 °C was compared at two time points, T0 and T60 minutes. The presence of ubiquitin oligomers was observed.