USP15 is a member of the ubiquitin specific protease (USP) family of deubiquitinating enzymes. USP enzymes play critical roles in ubiquitin-dependent processes through polyubiquitin chain disassembly and hydrolysis of ubiquitin-substrate bonds. The protein associates with the COP9 signalosome, and also plays a role in transforming growth factor beta signalling through deubiquitination of receptor-activated SMAD transcription factors. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene, and a pseudogene of this gene is located on the long arm of chromosome 2. Recombinant protein corresponding to aa1-235 from human USP15, fused to His-tag at N-terminal expressed in E. coli. Molecular Weight: ~29.5kD (258aa) Amino Acid Sequence: MGSSHHHHHH SSGLVPRGSH MGSMAEGGAA DLDTQRSDIA TLLKTSLRKG DTWYLVDSRW FKQWKKYVGF DSWDKYQMGD QNVYPGPIDN SGLLKDGDAQ SLKEHLIDEL DYILLPTEGW NKLVSWYTLM EGQEPIARKV VEQGMFVKHC KVEVYLTELK LCENGNMNNV VTRRFSKADT IDTIEKEIRK IFSIPDEKET RLWNKYMSNT FEPLNKPDST IQDAGLYQGQ VLVIEQKNED GTWPRGPSTP KKPLEQSC Storage and Stability: May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for 6 months after receipt at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.