TRIP1/SUG1 Antibody – Rabbit Polyclonal

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. This gene encodes one of the ATPase subunits, a member of the triple-A family of ATPases which have a chaperone-like activity. In addition to participation in proteasome functions, this subunit may participate in transcriptional regulation since it has been shown to interact with the thyroid hormone receptor and retinoid X receptor-alpha. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2010]

RPT6: The 26S protease is involved in the ATP-dependent degradation of ubiquitinated proteins. The regulatory (or ATPase) complex confers ATP dependency and substrate specificity to the 26S complex. Belongs to the AAA ATPase family.

Protein type: Nuclear receptor co-regulator; Proteasome complex; Ubiquitin conjugating system

Chromosomal Location of Human Ortholog: 17q23.3

Cellular Component: nucleoplasm; proteasome complex; membrane; proteasome regulatory particle; cytoplasm; inclusion body; cytoplasmic vesicle; nucleus; cytosol

Molecular Function: thyrotropin-releasing hormone receptor binding; protein binding; TATA-binding protein binding; ATPase activity; transcription cofactor activity; transcription factor binding; ATP binding

Biological Process: positive regulation of ubiquitin-protein ligase activity during mitotic cell cycle; transcription from RNA polymerase II promoter; proteasomal ubiquitin-dependent protein catabolic process; negative regulation of ubiquitin-protein ligase activity during mitotic cell cycle; protein polyubiquitination; viral reproduction; apoptosis; positive regulation of transcription, DNA-dependent; 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; negative regulation of programmed cell death; 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 transcription, DNA-dependent; G1/S transition of mitotic cell cycle; negative regulation of apoptosis