Affinity Extraction of Dye- and Metal Ion-Binding Proteins in Polyvinylpyrrolidone-Based Aqueous Two-Phase System

2002 ◽  
Vol 24 (3) ◽  
pp. 460-469 ◽  
Author(s):  
Sheryl Fernandes ◽  
Hyung-Seog Kim ◽  
Rajni Hatti-Kaul
Keyword(s):  
Metal Ion ◽  
Binding Proteins ◽  
Ion Binding ◽  
Phase System ◽  
Metal Ion Binding ◽  
Two Phase ◽  
Aqueous Two Phase System

GLOBAL METAL-ION BINDING PROTEIN FINGERPRINT: A METHOD TO IDENTIFY MOTIF-LESS METAL-ION BINDING PROTEINS

2010 ◽  
Vol 08 (04) ◽  
pp. 717-726 ◽  
Author(s):  
ABHILASH MOHAN ◽  
SHARMILA ANISHETTY ◽  
PENNATHUR GAUTAM
Keyword(s):  
Metal Ion ◽  
Binding Proteins ◽  
Binding Protein ◽  
Vital Role ◽  
Ion Binding ◽  
Binding Motif ◽  
Specific Class ◽  
Metal Ion Binding ◽  
Knowledge Based ◽  
Supervised Classifiers

Metal-ion binding proteins play a vital role in biological processes. Identifying putative metal-ion binding proteins is through knowledge-based methods. These involve the identification of specific motifs that characterize a specific class of metal-ion binding protein. Metal-ion binding motifs have been identified for the common metal ions. A robust global fingerprint that is useful in identifying a metal-ion binding protein from a non-metal-ion binding protein has not been devised. Such a method will help in identifying novel metal-ion binding proteins and proteins that do not possess a canonical metal-ion binding motif. We have used a set of physico-chemical parameters of metal-ion binding proteins encoded by the genes CzcA, CzcB and CzcD as a training set to supervised classifiers and have been able to identify several other metal ion binding proteins leading us to believe that metal-ion binding proteins have a global fingerprint, which cannot be pinned down to a single feature of the protein sequence.

Photophysical Characterisation, Metal Ion Binding and Enantiomeric Recognition of Chiral Ligands Containing Phenazine Fluorophore

2004 ◽  
Vol 69 (4) ◽  
pp. 885-896 ◽  
Author(s):  
Luisa Stella Dolci ◽  
Péter Huszthy ◽  
Erika Samu ◽  
Marco Montalti ◽  
Luca Prodi ◽  
...  
Keyword(s):  
Metal Ion ◽  
Photophysical Properties ◽  
Ion Binding ◽  
Metal Ion Binding ◽  
Ammonium Ions ◽  
Enantiomerically Pure ◽  
Binding Process ◽  
High Affinity ◽  
Enantiomeric Recognition ◽  
Chiral Species

Enantiomerically pure dimethyl- and diisobutyl-substituted phenazino-18-crown-6 ligands bind metal and ammonium ions and also primary aralkylammonium perchlorates in acetonitrile with high affinity, causing pronounced changes in their luminescence properties. In addition, they show enantioselectivity towards chiral primary aralkylammonium perchlorates. The possibility to monitor the binding process by photoluminescence spectroscopy can gain ground for the design of very efficient enantioselective chemosensors for chiral species. The observed changes in the photophysical properties are also an important tool for understanding the interactions present in the adduct.

Enhancing the Sensitivity of DNA and Aptamer Probes in the Dextran/PEG Aqueous Two-Phase System

2021 ◽  
Author(s):  
Qiaoshu Chen ◽  
Yanwen Zhang ◽  
Hui Chen ◽  
Jianbo Liu ◽  
Juewen Liu
Keyword(s):  
Phase System ◽  
Two Phase ◽  
Aqueous Two Phase System
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