Education Program for 21st Century・Department of Medicine, Graduate School・Research Institute of Clinical Medicine, Chonbuk National University, Jeonju, Jeonbuk, 561-756, Korea Phone: +82-63-270-3615, E-mail : [email protected] Division of Bionics and Bioinformatics, College of Engineering, Chonbuk National University, Jeonju, Jeonbuk, 561-756, Korea Department of Thoracic and Cardiovascular ...

We present a simple and inexpensive method for the capture and release of bacteria contained in an array of conical nanopores on a membrane inside a microfluidic device. As an example, we demonstrate that cyanobacteria can be captured, one bacterium per pore, in a defined orientation with over 500 bacteria per membrane with viabilities as high as 100%. The device can also specifically capture c...

PERK, the PKR-like endoplasmic reticulum (ER) kinase, is an ER transmembrane serine/threonine protein kinase activated during ER stress. In this study, we provide evidence that the Src-homology domain-containing adaptor Nck1 negatively regulates PERK. We show that Nck directly binds to phosphorylated Y(561) in the PERK juxtamembrane domain through its SH2 domain. We demonstrate that mutation of...

The 1 equiv reaction between ascorbic acid and cytochrome b(561) is a good model for redox reactions between metalloproteins (electron carriers) and specific organic substrates (hydrogen-atom carriers). Diethyl pyrocarbonate inhibits the reaction of cytochrome b(561) with ascorbate by modifying a histidine residue in the ascorbate-binding site. Ferri/ferrocyanide can mediate reduction of DEPC-t...

One of the major mechanisms involved in acetaminophen (APAP)induced hepatotoxicity is hepatocyte nuclear factor 4a (HNF4a)mediated activation of pregnane X receptor (PXR) and constitutive androstane receptor (CAR). In the present study, we investigated the role of miR-561 and its target gene DAX-1 encoding a corepressor of HNF4a in the process of APAP-induced hepatotoxicity. We used both human ...