酶学/蛋白酶体激活剂11S和α；亚单位多克隆抗体/BML-PW8185-0100/100µ；L
商品编号：
BML-PW8185-0100
品牌：
enzolifesciences
市场价：
¥8880.00
美元价：
5328.00
产品分类：
外泌体研究
公司分类：
exosome_research
联系Q Q：
3392242852
电话号码：
4000-520-616
电子邮箱：
info@ebiomall.com
商品介绍
Product Specification:
| Alternative Name: | PA28α, Proteasome activator complex subunit 1 |
| Host: | Rabbit |
| Immunogen: | Synthetic peptide corresponding to aa 5-19 of mouse PA28α. |
| UniProt ID: | P97371 (mouse), Q06323 (human) |
| GenBank ID: | 1698570 (mouse) |
| Species reactivity: | Human, Mouse, Rat |
| Specificity: | Recognizes the α subunit of proteasome activator 11S. |
| Applications: | WB |
| Formulation: | Liquid. Antiserum containing 10mM sodium azide. |
| Handling: | Avoid freeze/thaw cycles. |
| Shipping: | Shipped on Blue Ice |
| Long Term Storage: | -20°C |
| Scientific Background: | The proteasome is widely recognised as the central enzyme of non-lysosomal protein degradation. It is responsible for intracellular protein turnover and it is also critically involved in many regulatory processes and, in higher eukaryotes, in antigen processing. An enzymatic cascade is responsible for the attachment of multiple ubiquitin molecules to lysine residues of proteins targeted for degradation. The 26S proteasome is the key enzyme of the ubiquitin/ATP-dependent pathway of protein degradation. The catalytic core of this unusually large (2000kDa, 450Å in length) complex (31 subunits) is formed by the 20S proteasome, a barrel shaped structure shown by electron microscopy to comprise of four rings each containing seven subunits. 20S Proteasomes degrade only unfolded proteins in an energy-independent manner, whereas 26S proteasomes degrade native and ubiquitinylated proteins in an ATP-dependent manner. The native protein substrates are recognised by subunits, some with ATP binding sites, of the outer 19S caps of the 26S proteasome. The 19S regulatory subunit recognizes ubiquitinated proteins and plays an essential role in unfolding and translocating targets into the lumen of the 20S subunit. A second activator which can associate with the 20S proteasome in the absence of ATP is known as PA28 or the 11S regulator. The pure PA28 activator is a complex of two alternating subunits, PA28α and PA28β, which share approximately 50% homology but also show considerable similarity (30-40%) to a nuclear protein of unknown function, the Ki autoantigen (recently referred to as PA28γ). These subunits, with an apparent relative molecular weight of approximately 29kDa, form ringlike heteromeric complexes of ~200kDa possibly with an α3β3 stoichiometry. Electron microscopic studies have shown PA28 to be a ring shaped particle which, like the 19S, caps the 20S proteasome, by binding to the α-rings, at both or either end. The complex may, however, be readily dissociated. The finding that PA28 modulates the proteasome-catalysed production of antigenic peptides presented to the immune system on MHC class I molecules indicates a cellular function of this activator in antigen processing. Several genetic diseases are associated with defects in the ubiquitin-proteasome pathway. Some examples of affected proteins include those linked to cystic fibrosis, Angelman's syndrome, and Liddle syndrome. |
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Company Profile
Name:Enzo Life SciencesCategory:Corporation/Limited Liability CompanyTrade Category: ManufacturerRegistered Time: 1996Registered Capital: Above US$100 MillionLegal Representative:Employees:Address: TaksimWebsite: http://www.enzolifesciences.comProduct/Service: chemicals
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