Heterobridged Dinuclear, Tetranuclear, Dinuclear-Based 1-D, and Heptanuclear-Based 1-D Complexes of Copper(II) Derived from a Dinucleating Ligand: Syntheses, Structures, Magnetochemistry, Spectroscopy, and Catecholase Activity

2011 ◽  
Vol 50 (16) ◽  
pp. 7540-7554 ◽  
Author(s):  
Samit Majumder ◽  
Sohini Sarkar ◽  
Sujit Sasmal ◽  
E. Carolina Sañudo ◽  
Sasankasekhar Mohanta
Keyword(s):  
Catecholase Activity

Tetranuclear Copper and Mononuclear Nickel Complex of the Schiff Base of (3Z)-3-Hydrazonobutan-2-One Oxime with Different Aromatic Carbonyl Compounds: Synthesis, Single Crystal X-Ray Structure, Catecholase Activity, Phenoxazinone Synthase Activity, Catalytic Study for the Homocoupling of Benzyl Amines

2019 ◽  
Author(s):  
Swaraj Sengupta ◽  
Sahanwaj Khan ◽  
Shyamal K. Chattopadhyay ◽  
Indrani Banerjee ◽  
Tarun K. Panda ◽  
...  
Keyword(s):  
Schiff Base ◽  
Single Crystal ◽  
Copper Complex ◽  
Carbonyl Compounds ◽  
Nickel Complex ◽  
Schiff Base Ligands ◽  
X Ray ◽  
Phenoxazinone Synthase ◽  
Catecholase Activity ◽  
Aromatic Carbonyl Compounds

Synthesis and characterisation of one trinuclear copper complex, ([Cu<sub>3</sub>L<sub>3</sub>O]ClO<sub>4</sub>) (<b>1</b>) and one nickel complex ([Ni(L'H)<sub>2</sub>(dmso)<sub>2</sub>](ClO<sub>4</sub>)<sub>2</sub>) (<b>2</b>) with Schiff base ligands: (3Z)-3-((Z)-(1-(thiophen-2-yl)ethylidene)hydrazono)butan-2-one oxime (LH) and 1-(pyridin-2-yl)ethylidene)hydrazono)butan-2-one oxime (L<sup>'</sup>H). <b>1</b> shows high catecholase activity and has also been tested as a catalyst for the synthesis of benzylimine. <b>2 </b> shows phenoxazinone synthase activity.

Development of a new amperometric biosensor based on polyphenoloxidase and polyethersulphone membrane

2001 ◽  
Vol 73 (12) ◽  
pp. 1993-1999 ◽  
Author(s):  
P. V. Climent ◽  
M. L. M. Serralheiro ◽  
M. J. F. Rebelo
Keyword(s):  
Phenolic Compounds ◽  
Response Time ◽  
Enzyme Immobilization ◽  
Platinum Electrode ◽  
Enzymatic Catalysis ◽  
Amperometric Biosensor ◽  
Catecholase Activity

An amperometric biosensor based on the enzyme polyphenoloxidase (PPO), which makes the bioelectrocatalysis of phenolic compounds, was developed and optimized using cathecol as substrate. Polyethersulphone membranes were used for enzyme immobilization. Polyphenoloxidase oxidizes monophenols (cresolase activity) and diphenols (catecholase activity) into the corresponding o-quinones; the o-quinones formed in the enzymatic catalysis are then reduced back to cathecol at ­200 mV (vs. Ag, AgCl) at a platinum electrode. The polyphenoloxidase immobilized was from commercial origin or extracted from mushrooms. p-Cresol and phenol substrates were also tested. Reproducibility, response time, linearity, sensitivity, and stability of the biosensor were studied.

scholarly journals The Catecholase Activity of Neurospora Tyrosinase

1975 ◽  
Vol 54 (1) ◽  
pp. 107-116 ◽  
Author(s):  
Steven GUTTERIDGE ◽  
Donald ROBB
Keyword(s):  
Catecholase Activity

Synthesis, X-ray structure and catecholase activity of an antiferromagnetically coupled trinuclear nickel(II) complex

Polyhedron ◽  
2016 ◽  
Vol 110 ◽  
pp. 221-226 ◽  
Author(s):  
Abhijit Pal ◽  
Sarat Chandra Kumar ◽  
Ayon Kanti Ghosh ◽  
Chia-Her Lin ◽  
Eric Rivière ◽  
...  
Keyword(s):  
X Ray ◽  
Catecholase Activity

Mechanistic insight on the catecholase activity of dinuclear copper complexes with distant metal centers

2012 ◽  
Vol 41 (16) ◽  
pp. 4985 ◽  
Author(s):  
María Rosa Mendoza-Quijano ◽  
Gerardo Ferrer-Sueta ◽  
Marcos Flores-Álamo ◽  
Núria Aliaga-Alcalde ◽  
Virginia Gómez-Vidales ◽  
...  
Keyword(s):  
Copper Complexes ◽  
Metal Centers ◽  
Dinuclear Copper ◽  
Mechanistic Insight ◽  
Catecholase Activity

Coligand driven efficiency of catecholase activity and proteins binding study of redox active copper complexes

2020 ◽  
Vol 502 ◽  
pp. 119389 ◽  
Author(s):  
Vaishali Chhabra ◽  
Bidyut Kumar Kundu ◽  
Rishi Ranjan ◽  
Pragti ◽  
Shaikh M. Mobin ◽  
...  
Keyword(s):  
Copper Complexes ◽  
Binding Study ◽  
Redox Active ◽  
Catecholase Activity
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