Author: Ishikawa, Fumiaki N; Chang, Hsiao-Kang; Curreli, Marco; Liao, Hsiang-I; Olson, C Anders; Chen, Po-Chiang; Zhang, Rui; Roberts, Richard W; Sun, Ren; Cote, Richard J; Thompson, Mark E; Zhou, Chongwu
                    Title: Label-free, electrical detection of the SARS virus N-protein with nanowire biosensors utilizing antibody mimics as capture probes.  Cord-id: fswycwoj  Document date: 2009_1_1
                    ID: fswycwoj
                    
                    Snippet: Antibody mimic proteins (AMPs) are polypeptides that bind to their target analytes with high affinity and specificity, just like conventional antibodies, but are much smaller in size (2-5 nm, less than 10 kDa). In this report, we describe the first application of AMP in the field of nanobiosensors. In(2)O(3) nanowire based biosensors have been configured with an AMP (Fibronectin, Fn) to detect nucleocapsid (N) protein, a biomarker for severe acute respiratory syndrome (SARS). Using these devices
                    
                    
                    
                     
                    
                    
                    
                    
                        
                            
                                Document: Antibody mimic proteins (AMPs) are polypeptides that bind to their target analytes with high affinity and specificity, just like conventional antibodies, but are much smaller in size (2-5 nm, less than 10 kDa). In this report, we describe the first application of AMP in the field of nanobiosensors. In(2)O(3) nanowire based biosensors have been configured with an AMP (Fibronectin, Fn) to detect nucleocapsid (N) protein, a biomarker for severe acute respiratory syndrome (SARS). Using these devices, N protein was detected at subnanomolar concentration in the presence of 44 microM bovine serum albumin as a background. Furthermore, the binding constant of the AMP to Fn was determined from the concentration dependence of the response of our biosensors.
 
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