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Rabbit PA28, alpha Polyclonal Antibody | anti-PSME1 antibody

Rabbit anti-Human PA28, alpha, CT

Gene Names
PSME1; PA28A; IFI5111; MGC8628; REGalpha; PA28alpha
Applications
Western Blot
Purity
Affinity Purified
Purified by immunoaffinity chromatography
Synonyms
PA28; alpha; Polyclonal Antibody; Rabbit anti-Human PA28; CT; Anti -PA28; CT (Proteasome Activator 28-alpha subunit); anti-PSME1 antibody
Ordering
For Research Use Only!
Host
Rabbit
Clonality
Polyclonal
Isotype
IgG
Specificity
Recognizes the C-terminal region of human PA28a. Species Crossreactivity: mouse
Purity/Purification
Affinity Purified
Purified by immunoaffinity chromatography
Form/Format
Supplied as a liquid in PBS, pH 7.4, 0.09% sodium azide
Concentration
0.25mg/ml (varies by lot)
Applicable Applications for anti-PSME1 antibody
Western Blot (WB)
Application Notes
Suitable for use in Western Blot.
Other applications not tested.
Optimal dilutions to be determined by the researcher.
Immunogen
Synthetic peptide derived from the C-terminal region of humanPA28a
Preparation and Storage
May be stored at 4 degree C for short-term only. For long-term storage, store at -20 degree C. Aliquots are stable for at least 12 months at -20 degree C. 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.
Related Product Information for anti-PSME1 antibody
PA281 is a 180kD proteasome activator protein that is highly conserved among species.2,3 The PA28 complex is composed of two homologous subunits,a and b, which have similar catalytic properties and associate to form a hexameric ring4-5 that b binds to both ends of the 20S proteasome.6 PA28 is a strong proteasome activator; its affinity for the proteasome is about 10-fold greater than recombinant PA28b.5 The carboxy terminus of PA28a is necessary for PA28 to bind to and activate the proteasome.7 The activation of the proteasome by PA28 is an interferon-g (IFNg) inducible.8 PA28 is constitutively expressed by antigen presenting cells and is required for presentation of certain major histocompatibility (MHC) class I antigens.9-10 PA28 a/b can enhance antigen processing independently of changes in 20S proteasome subunit composition or assembly.11 Down-regulation of PA28 results in abnormal proteasome activation, and has been implicated in the development of intimal hyperplasia (IH) in animal models.6 Detection of anti-PA28a antibody is significantly higher in serum from patients with systemic lupus erythematosus (SLE) and Sjogren's syndrome (SS), suggesting the importance of an antigen-driven system in the induction of an autoimmune response to PA28 complex.12 Impaired expression of proteasome subunits is involved in the loss of HLA class I expression in human colon cancer cells.13
Product Categories/Family for anti-PSME1 antibody
References
1. Chu-Ping M, et al. Biochem Biophys Acta 1119:303-311,1992. 2. Jiang H, et al. Immunogenetics 46:93-98,1997. 3. Soza A, et al. FEBS Lett 413:27-34,1997. 4.Faries PL, et al. Ann Vasc Surg 15:628-633,2001. 5. Wilk S, et al. Arch Biochem Biophys 384:174-80,2000. 6. Murata S, et al. EMBO J 20:5898-907,2001. 7.Chu-Ping M, et al. Biol Chem 268:22514-22519,1993. 8. Fabunmi RP, et al. J Cell Sci 114:29-36,2001. 9. Groettrup M, et al. Nature 381:166-168,1996. 10.Kohda K, et al. J Immunol 160:4923-14935,1998. 11. Schwarz K, et al. Eur J Immunol 30:3672-3679,2000. 12. Matsushita M, et al. J Rheumatol31:252-259,2004.13. Miyagi T, et al. J Gastroenterol Hepatol 18:32-40,2003.

NCBI and Uniprot Product Information

NCBI GI #
NCBI GeneID
UniProt Accession #
Molecular Weight
28,723 Da
NCBI Official Full Name
PA28 alpha subunit
NCBI Official Synonym Full Names
proteasome (prosome, macropain) activator subunit 1 (PA28 alpha)
NCBI Official Symbol
PSME1
NCBI Official Synonym Symbols
PA28A; IFI5111; MGC8628; REGalpha; PA28alpha
NCBI Protein Information
proteasome activator complex subunit 1; REG-alpha; IGUP I-5111; OTTHUMP00000027975; OTTHUMP00000164702; 29-kD MCP activator subunit; interferon-gamma IEF SSP 5111; proteasome activator subunit-1; 11S regulator complex alpha subunit; 11S regulator complex subunit alpha; proteasome activator 28 subunit alpha; interferon-gamma-inducible protein 5111; interferon gamma up-regulated I-5111 protein; activator of multicatalytic protease subunit 1
UniProt Protein Name
Proteasome activator complex subunit 1
UniProt Gene Name
PSME1
UniProt Synonym Gene Names
IFI5111
UniProt Entry Name
PSME1_HUMAN

NCBI Description

The 26S proteasome is a multicatalytic proteinase complex with a highly ordered structure composed of 2 complexes, a 20S core and a 19S regulator. The 20S core 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. The 19S regulator is composed of a base, which contains 6 ATPase subunits and 2 non-ATPase subunits, and a lid, which contains up to 10 non-ATPase 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. The immunoproteasome contains an alternate regulator, referred to as the 11S regulator or PA28, that replaces the 19S regulator. Three subunits (alpha, beta and gamma) of the 11S regulator have been identified. This gene encodes the alpha subunit of the 11S regulator, one of the two 11S subunits that is induced by gamma-interferon. Three alpha and three beta subunits combine to form a heterohexameric ring. Two transcripts encoding different isoforms have been identified. [provided by RefSeq]

Uniprot Description

PSME1: Implicated in immunoproteasome assembly and required for efficient antigen processing. The PA28 activator complex enhances the generation of class I binding peptides by altering the cleavage pattern of the proteasome. Heterodimer of PSME1 and PSME2, which forms a hexadimeric ring. PSME1 can form homoheptamers. By IFNG/IFN-gamma. Belongs to the PA28 family.

Protein type: Proteasome complex

Chromosomal Location of Human Ortholog: 14q11.2

Cellular Component: proteasome complex; nucleoplasm; proteasome activator complex; cytoplasm; cytosol

Biological Process: positive regulation of ubiquitin-protein ligase activity during mitotic cell cycle; negative regulation of ubiquitin-protein ligase activity during mitotic cell cycle; protein polyubiquitination; viral reproduction; apoptosis; antigen processing and presentation of exogenous peptide antigen via MHC class I, TAP-dependent; DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest; regulation of apoptosis; antigen processing and presentation of peptide antigen via MHC class I; regulation of ubiquitin-protein ligase activity during mitotic cell cycle; anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process; antigen processing and presentation of exogenous peptide antigen via MHC class I; gene expression; mitotic cell cycle; regulation of amino acid metabolic process; negative regulation of apoptosis; G1/S transition of mitotic cell cycle

Research Articles on PSME1

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Product Notes

The PSME1 psme1 (Catalog #AAA611019) is an Antibody produced from Rabbit and is intended for research purposes only. The product is available for immediate purchase. AAA Biotech's PA28, alpha can be used in a range of immunoassay formats including, but not limited to, Western Blot (WB). Suitable for use in Western Blot. Other applications not tested. Optimal dilutions to be determined by the researcher. Researchers should empirically determine the suitability of the PSME1 psme1 for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. It is sometimes possible for the material contained within the vial of "PA28, alpha, Polyclonal Antibody" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.

Precautions

All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.

Disclaimer

Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.

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