Results 1 to 10 of about 1,610,463 (321)

The active site of magnesium chelatase [PDF]

open access: yesNature Plants, 2020
The insertion of magnesium into protoporphyrin initiates the biosynthesis of chlorophyll, the pigment that underpins photosynthesis. This reaction, catalysed by the magnesium chelatase complex, couples ATP hydrolysis by a ChlID motor complex to chelation within the ChlH subunit. We probed the structure and catalytic function of ChlH using a combination
James D. Reid   +7 more
openaire   +4 more sources

Ni–Rh-based bimetallic conductive MOF as a high-performance electrocatalyst for the oxygen evolution reaction

open access: yesFrontiers in Chemistry, 2023
Metal–organic frameworks (MOFs) have recently been considered the promising catalysts due to their merits of abundant metal sites, versatile coordination groups, and tunable porous structure.
Shu Zu   +4 more
doaj   +1 more source

An Investigation of Active Sites for electrochemical CO2 Reduction Reactions: From In Situ Characterization to Rational Design

open access: yesAdvanced Science, 2021
The electrochemical carbon dioxide (CO2) reduction reaction (CO2RR) is among the most promising approaches used to transform greenhouse gas into useful fuels and chemicals.
Yuqin Zou, Shuangyin Wang
doaj   +1 more source

Purification and Mechanism of Microcystinase MlrC for Catalyzing Linearized Cyanobacterial Hepatotoxins Using Sphingopyxis sp. USTB-05

open access: yesToxins, 2022
Cyanobacterial hepatotoxins, including microcystins (MCs) and nodularins (NODs), are widely produced, distributed and extremely hazardous to human beings and the environment.
Qianwen Zou   +9 more
doaj   +1 more source

Cloning and Phylogenetic Relationships Analysis of an Oxidoreductase Gene in Product Pathway of Ethylene Hormone [PDF]

open access: yesمجله بیوتکنولوژی کشاورزی, 2015
1-aminocyclopropane-1-carboxylic acid oxidase (ACO) enzyme is a member of the Fe (II-dependent family of oxidases/ oxygenases) and for activity requires Fe2+ as cofactors and ascorbate as a co-substrate.
Zohreh Jafari   +3 more
doaj   +1 more source

Activity Quantification of Fuel Cell Catalysts via Sequential Poisoning by Multiple Reaction Inhibitors

open access: yesNanomaterials, 2022
The development of non−Pt or carbon−based catalysts for anion exchange membrane fuel cells (AEMFCs) requires identification of the active sites of the catalyst.
Yunjin Kim   +8 more
doaj   +1 more source

Energetics and thermodynamic stability of potential Fe(II)‐hexa‐aza‐active sites for O2 reduction in PEM fuel cells

open access: yesSusMat, 2022
We present here a thermodynamic assessment of the stability behavior in acid environment at 298 and 353 K (80°C) of two iron (II) hexa‐aza‐macrocyclic complexes and of an hexa‐aza‐iron‐based site (FeIIN(4+2)/C) that should potentially be active for the ...
Vassili P. Glibin   +2 more
doaj   +1 more source

The Active-site Environment of Rhodopsin [PDF]

open access: yesJournal of Biological Chemistry, 1989
The 11-cis-retinal binding site of rhodopsin is of great interest because it is buried in the membrane but yet must provide an environment for charged amino acids. In addition, the active-site lysine residue must be able to engage in rapid Schiff base formation with 11-cis-retinal at neutral and lower pH values.
Pajares, María A., Rando, Robert R.
openaire   +3 more sources

Structural and biophysical aspects of l-asparaginases: a growing family with amazing diversity

open access: yesIUCrJ, 2021
l-Asparaginases have remained an intriguing research topic since their discovery ∼120 years ago, especially after their introduction in the 1960s as very efficient antileukemic drugs.
Joanna I. Loch, Mariusz Jaskolski
doaj   +1 more source

Copper Active Sites in Biology [PDF]

open access: yesChemical Reviews, 2014
Based on its generally accessible I/II redox couple and bioavailability, copper plays a wide variety of roles in nature that mostly involve electron transfer (ET), O2 binding, activation and reduction, NO2− and N2O reduction and substrate activation.
Solomon, Edward I.   +9 more
openaire   +5 more sources

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