Rabbit Anti-Human EMB (a.a. 1-253) Polyclonal antibody

To achieve more powerful task processing capabilities, the smart embedded systems (SES) are interconnected via wireless network to form a collaboration system. However, due to the limitations on system hardware, the SES device are usually built with the consideration of software functions instead of enough security mechanisms, that exposes the SESs under the security threats from malware or malicious users, such as software or data tampering. To address this issue, a Trusted Platform Module (TPM) is brought in the SES device to guarantee the integrity of the system, with which any unauthorized modifications towards the SES system can be detected by measurement operations of TPM. However, from the perspective of the external visitors, a SES collaboration network performs as a complete system. Thus, to unify the root-of-trust of the network, all the TPMs need to be integrated into a logical one, which can provide more efficient way to attest the external visitors. This brings two distinct advantages: (1) any nodes of the network can be the access node for the visitor, and (2) once a visitor has been successfully attested, it can access the network via any nodes without extra attestation. To achieve TPM integration, we have proposed five protocols to orchestrate the distributed TPMs, including Synchronization Protocol (SYNP), Node Accessing Protocol (NAP), Crossing-Node Access Protocol (CNAP), Updating Protocol (UPDP) and Node-Removing Protocol (NRP). We have built a prototype system composed of Raspberry Pis and Infineon TPM2.0 chips, in which these protocols are implemented and deployed. Then, we evaluate the protocols' performance on time consumption, and the results show the feasibility and availability of these protocols. Finally, our analysis on experimental results gives the guidance for appropriate use of these protocols. (c) 2020 Elsevier Ltd. All rights reserved.

Spinocerebellar ataxia type 3 (SCA3) is a neurodegenerative disorder caused by a CAG expansion in the ATXN3 gene leading to a polyglutamine expansion in the ataxin-3 protein. The nuclear presence and aggregation of expanded ataxin-3 are critical steps in disease pathogenesis. To identify novel therapeutic targets, we investigated the nucleocytoplasmic transport system by screening a collection of importins and exportins that potentially modulate this nuclear localization. Using cell, Drosophila, and mouse models, we focused on three transport proteins, namely, CRM1, IPO13, KPNA3, and their respective Drosophila orthologs Emb, Cdm, and Kap-alpha 3. While overexpression of CRM1/Emb demonstrated positive effects in Drosophila, KPNA3/Kap-alpha 3 emerged as the most promising target, as knockdown via multiple RNAi lines demonstrated its ability to shuttle both truncated and full-length expanded ataxin-3, rescue neurodegeneration, restore photoreceptor formation, and reduce aggregation. Furthermore, KPNA3 knockout in SCA3 mice resulted in an amelioration of molecular and behavioral disturbances such as total activity, anxiety, and gait. Since KPNA3 is known to function as an import protein and recognize nuclear localization signals (NLSs), this work unites ataxin-3 structure to the nuclear pore machinery and provides a link between karyopherins, NLS signals, and polyglutamine disease, as well as demonstrates that KPNA3 is a key player in the pathogenesis of SCA3.