USP5 Protein, Human (His)

USP5 protein selectively cleaves branched multiubiquitin polymers, favoring 'Lys-48'-linked polyubiquitin disassembly. It exhibits lower affinity for linear and 'Lys-63'-linked polyubiquitin. USP5 knockdown leads to p53/TP53 accumulation, enhancing p53/TP53 transcriptional activity, as unanchored polyubiquitin competes with ubiquitinated p53/TP53 for proteasomal recognition, unlike MDM2. USP5 Protein, Human (His) is the recombinant human-derived USP5 protein, expressed by E. coli, with N-His labeled tag.

USP5, a deubiquitinating enzyme, demonstrates a marked preference for cleaving both linear and branched multiubiquitin polymers, with a particular affinity for branched structures. It is actively involved in the disassembly of unanchored 'Lys-48'-linked polyubiquitin chains. While USP5 binds linear and 'Lys-63'-linked polyubiquitin with a comparatively lower affinity, its knockdown results in the accumulation of p53/TP53 and an elevation in p53/TP53 transcriptional activity. This effect is attributed to the ability of the unanchored polyubiquitin accumulating in the absence of USP5 to compete with ubiquitinated p53/TP53, but not with MDM2, for recognition by the proteasome.

The fundamental role of USP5 is specific removal of ubiquitin from substrates. USP5 catalyses the ubiquitin from the substrate Ub-Rho110 to release fluorophores. Rho110 will release 535nM emission light under the excitation condition of 485nM. The signal of which can be quickly and reliably captured using a microplate reader.

Human

E. coli

N-His

P45974-1 (A2-S858)

8078

Full Length of Isoform-1 Mature Protein

AELSEEALLSVLPTIRVPKAGDRVHKDECAFSFDTPESEGGLYICMNTFLGFGKQYVERHFNKTGQRVYLHLRRTRRPKEEDPATGTGDPPRKKPTRLAIGVEGGFDLSEEKFELDEDVKIVILPDYLEIARDGLGGLPDIVRDRVTSAVEALLSADSASRKQEVQAWDGEVRQVSKHAFSLKQLDNPARIPPCGWKCSKCDMRENLWLNLTDGSILCGRRYFDGSGGNNHAVEHYRETGYPLAVKLGTITPDGADVYSYDEDDMVLDPSLAEHLSHFGIDMLKMQKTDKTMTELEIDMNQRIGEWELIQESGVPLKPLFGPGYTGIRNLGNSCYLNSVVQVLFSIPDFQRKYVDKLEKIFQNAPTDPTQDFSTQVAKLGHGLLSGEYSKPVPESGDGERVPEQKEVQDGIAPRMFKALIGKGHPEFSTNRQQDAQEFFLHLINMVERNCRSSENPNEVFRFLVEEKIKCLATEKVKYTQRVDYIMQLPVPMDAALNKEELLEYEEKKRQAEEEKMALPELVRAQVPFSSCLEAYGAPEQVDDFWSTALQAKSVAVKTTRFASFPDYLVIQIKKFTFGLDWVPKKLDVSIEMPEELDISQLRGTGLQPGEEELPDIAPPLVTPDEPKGSLGFYGNEDEDSFCSPHFSSPTSPMLDESVIIQLVEMGFPMDACRKAVYYTGNSGAEAAMNWVMSHMDDPDFANPLILPGSSGPGSTSAAADPPPEDCVTTIVSMGFSRDQALKALRATNNSLERAVDWIFSHIDDLDAEAAMDISEGRSAADSISESVPVGPKVRDGPGKYQLFAFISHMGTSTMCGHYVCHIKKEGRWVIYNDQKVCASEKPPKDLGYIYFYQRVAS

≥ 85%, as determined by reducing SDS-PAGE.

Solution.

Supplied as a 0.22 μm filtered solution of 50 mM Tris-HCl, pH 7.5, 200 mM NaCl, 20% glycerol, 1 mM DTT.
Note: For SPR assay, please replace the buffer. Primary amine components (e.g., Tris, imidazole) can affect protein-coupled chips.

<1 EU/μg, determined by LAL method.

N/A.

Stored at -80°C for 1 year from date of receipt. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.

Shipping with dry ice.