A novel triangular silver nanoprisms-based surface plasmon resonance assay for free chlorine

The Analyst ◽  
2015 ◽  
Vol 140 (3) ◽  
pp. 902-906 ◽  
Author(s):  
Yi He ◽  
Haili Yu
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Free Chlorine ◽  
Silver Nanoprisms ◽  
First Time

In this study, a novel assay for the detection of free chlorine is proposed for the first time.

Interactions between factor XIII and the αC region of fibrinogen

Blood ◽  
2011 ◽  
Vol 117 (12) ◽  
pp. 3460-3468 ◽  
Author(s):  
Kerrie A. Smith ◽  
Penelope J. Adamson ◽  
Richard J. Pease ◽  
Jane M. Brown ◽  
Anthony J. Balmforth ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Factor Xiii ◽  
Site Directed Mutagenesis ◽  
Directed Mutagenesis ◽  
Enhancing Effect ◽  
High Affinity ◽  
A Subunit ◽  
First Time

Abstract Fibrinogen αC residues 242-424 have been shown to have a major regulatory role in the activation of factor XIII-A2B2 (FXIII-A2B2); however, the interactions underpinning this enhancing effect have not been determined. Here, we have characterized the binding of recombinant (r)FXIII-A subunit and FXIII-A2B2 with fibrin(ogen) and fibrin αC residues 233-425. Using recombinant truncations of the fibrin αC region 233-425 and surface plasmon resonance, we found that activated rFXIII-A bound αC 233-425 (Kd of 2.35 ± 0.09μM) which was further localized to αC 389-403. Site-directed mutagenesis of this region highlighted Glu396 as a key residue for binding of activated rFXIII-A. The interaction was specific for activated rFXIII-A and depended on the calcium-induced conformational change known to occur in rFXIII-A during activation. Furthermore, nonactivated FXIII-A2B2, thrombin-cleaved FXIII-A2B2, and activated FXIII-A2B2 each bound fibrin(ogen) and specifically αC region 371-425 with high affinity (Kd < 35nM and Kd < 31nM, respectively), showing for the first time the potential involvement of the αC region in binding to FXIII-A2B2. These results suggest that in addition to fibrinogen γ′ chain binding, the fibrin αC region also provides a platform for the binding of FXIII-A2B2 and FXIII-A subunit.

Facile synthesis of Ag/AgCl/BiPO4 plasmonic photocatalyst with significantly enhanced visible photocatalytic activity and high stability

RSC Advances ◽  
2015 ◽  
Vol 5 (108) ◽  
pp. 89105-89112 ◽  
Author(s):  
Pandi Shan ◽  
Chenggang Niu ◽  
Dawei Huang ◽  
Guangming Zeng ◽  
Huan Zhang
Keyword(s):  
Photocatalytic Activity ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
High Stability ◽  
Facile Synthesis ◽  
Resonance Mechanism ◽  
Plasmonic Photocatalyst ◽  
Visible Photocatalytic Activity ◽  
First Time

Highly efficient Ag/AgCl/BiPO4 plasmonic photocatalyst was synthesized for the first time. The catalyst showed excellent visible photocatalytic activity and high stability. A surface plasmon resonance mechanism was investigated.

Small-Molecule (Micro)arrays for Sensitive Multiplex Metabolites Detection by Surface Plasmon Resonance Imaging

2018 ◽  
Author(s):  
Yong Cao ◽  
Mark T. McDermott
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Small Molecule ◽  
Plasmon Resonance ◽  
Surface Plasmon Resonance Imaging ◽  
Resonance Imaging ◽  
Low Sensitivity ◽  
Small Molecule Detection ◽  
First Time

<div> <div> <div> <p>Small-molecule (micro)arrays were developed to measure three metabolites simultaneously by surface plasmon resonance imaging for the first time. To tackle the low sensitivity challenge associated with small molecule detection, antibodies were employed as the signal amplifiers. This work demonstrates both inhibition and displacement formats are applicable for sensitive multiplex metabolites detection. </p> </div> </div> </div>

Small-Molecule (Micro)arrays for Sensitive Multiplex Metabolites Detection by Surface Plasmon Resonance Imaging

2018 ◽  
Author(s):  
Yong Cao ◽  
Mark T. McDermott
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Small Molecule ◽  
Plasmon Resonance ◽  
Surface Plasmon Resonance Imaging ◽  
Resonance Imaging ◽  
Low Sensitivity ◽  
Small Molecule Detection ◽  
First Time

<div> <div> <div> <p>Small-molecule (micro)arrays were developed to measure three metabolites simultaneously by surface plasmon resonance imaging for the first time. To tackle the low sensitivity challenge associated with small molecule detection, antibodies were employed as the signal amplifiers. This work demonstrates both inhibition and displacement formats are applicable for sensitive multiplex metabolites detection. </p> </div> </div> </div>

scholarly journals SPR Analysis of SUMO-Murine Rap1-Interacting Factor 1 C-Terminal Domain Interaction with G4

Biosensors ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 37
Author(s):  
Sana Alavi ◽  
Hamed Ghadiri ◽  
Bahareh Dabirmanesh ◽  
Khosro Khajeh
Keyword(s):  
Surface Plasmon Resonance ◽  
Dna Replication ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Domain Interaction ◽  
Cellular Processes ◽  
Intrinsically Disordered ◽  
High Affinity ◽  
Potential Biomarker ◽  
First Time

One of the advantages of surface plasmon resonance is its sensitivity and real-time analyses performed by this method. These characteristics allow us to further investigate the interactions of challenging proteins like Rap1-interacting factor 1 (Rif1). Rif1 is a crucial protein responsible for regulating different cellular processes including DNA replication, repair, and transcription. Mammalian Rif1 is yet to be fully characterized, partly because it is predicted to be intrinsically disordered for a large portion of its polypeptide. This protein has recently been the target of research as a potential biomarker in many cancers. Therefore, finding its most potent interacting partner is of utmost importance. Previous studies showed Rif1’s affinity towards structured DNAs and amongst them, T6G24 was superior. Recent studies have shown mouse Rif1 (muRif1) C-terminal domain’s (CTD) role in binding to G-quadruplexes (G4). There were many concerns in investigating the Rif1 and G4 interaction, which can be minimized using SPR. Therefore, for the first time, we have assessed its binding with G4 at nano-molar concentrations with SPR which seems to be crucial for its binding analyses. Our results indicate that muRif1-CTD has a high affinity for this G4 sequence as it shows a very low KD (6 ± 1 nM).

Time-Dependent Surface Plasmon Resonance Spectroscopy of Silver Nanoprisms in the Presence of Halide Ions

ChemPhysChem ◽  
2010 ◽  
Vol 11 (8) ◽  
pp. 1742-1748 ◽  
Author(s):  
Ming-Sheng Hsu ◽  
Yi-Wei Cao ◽  
Hsuang-Wen Wang ◽  
Ya-Sin Pan ◽  
Bo-Hong Lee ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Time Dependent ◽  
Resonance Spectroscopy ◽  
Surface Plasmon Resonance Spectroscopy ◽  
Halide Ions ◽  
Silver Nanoprisms

Photocurrent enhancement of porphyrin molecules over a wide-wavelength region based on combined use of silver nanoprisms with different aspect ratios

2015 ◽  
Vol 3 (43) ◽  
pp. 11439-11448 ◽  
Author(s):  
Kosuke Sugawa ◽  
Naoto Takeshima ◽  
Koji Uchida ◽  
Hironobu Tahara ◽  
Shota Jin ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Wavelength Range ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Wavelength Region ◽  
Localized Surface Plasmon ◽  
Silver Nanoprisms ◽  
Aspect Ratios ◽  
Combined Use

We succeeded in controlling the wavelength range in which the photocurrent of porphyrin is enhanced by tuning as well as expanding the wavelength ranges in which the localized surface plasmon resonance occurs.

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