PSME2

Proteasome (prosome, macropain) activator subunit 2 (PA28 beta), also known as PSME2, is a human gene.cite web | title = Entrez Gene: PSME2 proteasome (prosome, macropain) activator subunit 2 (PA28 beta)| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=5721| accessdate = ]

PBB_Summary
section_title =
summary_text = 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 beta subunit of the 11S regulator, one of the two 11S subunits that is induced by gamma-interferon. Three beta and three alpha subunits combine to form a heterohexameric ring. Six pseudogenes have been identified on chromosomes 4, 5, 8, 10 and 13.cite web | title = Entrez Gene: PSME2 proteasome (prosome, macropain) activator subunit 2 (PA28 beta)| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=5721| accessdate = ]

References

Further reading

PBB_Further_reading
citations =
*cite journal | author=Coux O, Tanaka K, Goldberg AL |title=Structure and functions of the 20S and 26S proteasomes. |journal=Annu. Rev. Biochem. |volume=65 |issue= |pages= 801–47 |year= 1996 |pmid= 8811196 |doi= 10.1146/annurev.bi.65.070196.004101
*cite journal | author=Sijts A, Sun Y, Janek K, "et al." |title=The role of the proteasome activator PA28 in MHC class I antigen processing. |journal=Mol. Immunol. |volume=39 |issue= 3-4 |pages= 165–9 |year= 2002 |pmid= 12200048 |doi=
*cite journal | author=Goff SP |title=Death by deamination: a novel host restriction system for HIV-1. |journal=Cell |volume=114 |issue= 3 |pages= 281–3 |year= 2003 |pmid= 12914693 |doi=
*cite journal | author=Dubiel W, Pratt G, Ferrell K, Rechsteiner M |title=Purification of an 11 S regulator of the multicatalytic protease. |journal=J. Biol. Chem. |volume=267 |issue= 31 |pages= 22369–77 |year= 1992 |pmid= 1429590 |doi=
*cite journal | author=Ahn JY, Tanahashi N, Akiyama K, "et al." |title=Primary structures of two homologous subunits of PA28, a gamma-interferon-inducible protein activator of the 20S proteasome. |journal=FEBS Lett. |volume=366 |issue= 1 |pages= 37–42 |year= 1995 |pmid= 7789512 |doi=
*cite journal | author=Mott JD, Pramanik BC, Moomaw CR, "et al." |title=PA28, an activator of the 20 S proteasome, is composed of two nonidentical but homologous subunits. |journal=J. Biol. Chem. |volume=269 |issue= 50 |pages= 31466–71 |year= 1995 |pmid= 7989312 |doi=
*cite journal | author=Maruyama K, Sugano S |title=Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides. |journal=Gene |volume=138 |issue= 1-2 |pages= 171–4 |year= 1994 |pmid= 8125298 |doi=
*cite journal | author=Ahn K, Erlander M, Leturcq D, "et al." |title=In vivo characterization of the proteasome regulator PA28. |journal=J. Biol. Chem. |volume=271 |issue= 30 |pages= 18237–42 |year= 1996 |pmid= 8663520 |doi=
*cite journal | author=Seeger M, Ferrell K, Frank R, Dubiel W |title=HIV-1 tat inhibits the 20 S proteasome and its 11 S regulator-mediated activation. |journal=J. Biol. Chem. |volume=272 |issue= 13 |pages= 8145–8 |year= 1997 |pmid= 9079628 |doi=
*cite journal | author=McCusker D, Jones T, Sheer D, Trowsdale J |title=Genetic relationships of the genes encoding the human proteasome beta subunits and the proteasome PA28 complex. |journal=Genomics |volume=45 |issue= 2 |pages= 362–7 |year= 1998 |pmid= 9344661 |doi= 10.1006/geno.1997.4948
*cite journal | author=Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, "et al." |title=Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library. |journal=Gene |volume=200 |issue= 1-2 |pages= 149–56 |year= 1997 |pmid= 9373149 |doi=
*cite journal | author=Hendil KB, Khan S, Tanaka K |title=Simultaneous binding of PA28 and PA700 activators to 20 S proteasomes. |journal=Biochem. J. |volume=332 ( Pt 3) |issue= |pages= 749–54 |year= 1998 |pmid= 9620878 |doi=
*cite journal | author=Madani N, Kabat D |title=An endogenous inhibitor of human immunodeficiency virus in human lymphocytes is overcome by the viral Vif protein. |journal=J. Virol. |volume=72 |issue= 12 |pages= 10251–5 |year= 1998 |pmid= 9811770 |doi=
*cite journal | author=Wójcik C, Tanaka K, Paweletz N, "et al." |title=Proteasome activator (PA28) subunits, alpha, beta and gamma (Ki antigen) in NT2 neuronal precursor cells and HeLa S3 cells. |journal=Eur. J. Cell Biol. |volume=77 |issue= 2 |pages= 151–60 |year= 1999 |pmid= 9840465 |doi=
*cite journal | author=Simon JH, Gaddis NC, Fouchier RA, Malim MH |title=Evidence for a newly discovered cellular anti-HIV-1 phenotype. |journal=Nat. Med. |volume=4 |issue= 12 |pages= 1397–400 |year= 1998 |pmid= 9846577 |doi= 10.1038/3987
*cite journal | author=McCusker D, Wilson M, Trowsdale J |title=Organization of the genes encoding the human proteasome activators PA28alpha and beta. |journal=Immunogenetics |volume=49 |issue= 5 |pages= 438–45 |year= 1999 |pmid= 10199920 |doi=
*cite journal | author=Tanahashi N, Murakami Y, Minami Y, "et al." |title=Hybrid proteasomes. Induction by interferon-gamma and contribution to ATP-dependent proteolysis. |journal=J. Biol. Chem. |volume=275 |issue= 19 |pages= 14336–45 |year= 2000 |pmid= 10799514 |doi=
*cite journal | author=Mulder LC, Muesing MA |title=Degradation of HIV-1 integrase by the N-end rule pathway. |journal=J. Biol. Chem. |volume=275 |issue= 38 |pages= 29749–53 |year= 2000 |pmid= 10893419 |doi= 10.1074/jbc.M004670200
*cite journal | author=Sheehy AM, Gaddis NC, Choi JD, Malim MH |title=Isolation of a human gene that inhibits HIV-1 infection and is suppressed by the viral Vif protein. |journal=Nature |volume=418 |issue= 6898 |pages= 646–50 |year= 2002 |pmid= 12167863 |doi= 10.1038/nature00939

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