Anti-PSMA5 Antibody Picoband®

Proteasome subunit alpha type-5 also known as 20S proteasome subunit alpha-5 is a protein that in humans is encoded by the PSMA5 gene. The proteasome is a multicatalytic proteinase complex with a highly ordered ring-shaped 20S core structure. The core structure is composed of 4 rings of 28 non-identical subunits; 2 rings are composed of 7 alpha subunits and 2 rings are composed of 7 beta subunits. Proteasomes are distributed throughout eukaryotic cells at a high concentration and cleave peptides in an ATP/ubiquitin-dependent process in a non-lysosomal pathway. An essential function of a modified proteasome, the immunoproteasome, is the processing of class I MHC peptides. This gene encodes a member of the peptidase T1A family, that is a 20S core alpha subunit. Multiple alternatively spliced transcript variants encoding two distinct isoforms have been found for this gene.

E.coli-derived human PSMA5 recombinant protein (Position: M1-I241) . Human PSMA5 shares 100% and 98.8% amino acid (aa) sequence identity with mouse and rat PSMA5, respectively.

1. Coux, O., Tanaka, K., Goldberg, A. L. Structure and functions of the 20S and 26S proteasomes. Ann. Rev. Biochem. 65: 801-847, 1996. 2. DeMartino, G. N., Orth, K., McCullough, M. L., Lee, L. W., Munn, T. Z., Moomaw, C. R., Dawson, P. A., Slaughter, C. A. The primary structures of four subunits of the human, high molecular weight proteinase, macropain (proteasome), are distinct but homologous. Biochim. Biophys. Acta 1079: 29-38, 1991. 3. Mayau, V., Baron, B., Buttin, G., Debatisse, M. Twelve genes, including the unassigned proteasome zeta subunit gene, ordered within the human 1p13 region. Mammalian Genome 9: 331-333, 1998.

At -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freezing and thawing.