Human STUB1 / CHIP

Rabbit

Human, Mouse, Rat (tested or 100% immunogen sequence identity)

IgG Polyclonal

Unconjugated. Also available conjugated with HRP, Biotin, FITC.

Protein G purified

Unmodified

Recombinant Human E3 ubiquitin-protein ligase CHIP protein (1-48AA)

E3 ubiquitin-protein ligase which targets misfolded chaperone substrates towards proteasomal degradation. Collaborates with ATXN3 in the degradation of misfolded chaperone substrates: ATXN3 restricting the length of ubiquitin chain attached to STUB1/CHIP substrates and preventing further chain extension. Ubiquitinates NOS1 in concert with Hsp70 and Hsp40. Modulates the activity of several chaperone complexes, including Hsp70, Hsc70 and Hsp90. Mediates transfer of non-canonical short ubiquitin chains to HSPA8 that have no effect on HSPA8 degradation. Mediates polyubiquitination of DNA polymerase beta (POLB) at 'Lys-41', 'Lys-61' and 'Lys-81', thereby playing a role in base-excision repair: catalyzes polyubiquitination by amplifying the HUWE1/ARF-BP1-dependent monoubiquitination and leading to POLB-degradation by the proteasome. Mediates polyubiquitination of CYP3A4. Ubiquitinates EPHA2 and may regulate the receptor stability and activity through proteasomal degradation. Negatively regulates the suppressive function of regulatory T-cells (Treg) during inflammation by mediating the ubiquitination and degradation of FOXP3 in a HSPA1A/B-dependent manner (PubMed:23973223).

• IHC
• Immunofluorescence
• Western blot
• ELISA

PBS, pH 7.4, 0.03% Proclin 300, 50% glycerol.

Short term: -20°C; Long term: -80°C; Avoid freeze-thaw cycles.

For research use only. Intended for use by laboratory professionals.

This antibody carries the LSBio 100% Guarantee.

Uniprot: Q9UNE7 NCBI: NM_005861 NP_005852.2