Immunofluorescent analysis of PSME1 showing staining in the cytoplasm and nucleus of H1299 cells. H1299 cells were fixed in 4% paraformaldehyde at RT for 15 min and stained using a PSME1 polyclonal antibody (Product # PA5-31173) diluted at 1:500. Blue: Hoechst 33342 staining. Scale bar = 10µm.
|Tested species reactivity||Human|
|Host / Isotype||Rabbit / IgG|
|Immunogen||Recombinant fragment corresponding to a region within amino acids 1 and 218 of Human PSME1|
|Purification||Antigen affinity chromatography|
|Storage buffer||PBS, pH 7, with 1% BSA, 20% glycerol|
|Storage Conditions||-20° C, Avoid Freeze/Thaw Cycles|
|Tested Applications||Dilution *|
|Western Blot (WB)||1:5000-1:20,000|
* Suggested working dilutions are given as a guide only. It is recommended that the user titrate the product for use in their own experiment using appropriate negative and positive controls.
PA5-31173 targets PSME1 in WB applications and shows reactivity with Human samples.
The PA5-31173 immunogen is recombinant fragment corresponding to a region within amino acids 1 and 218 of Human PSME1.
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.
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