Sentence examples for methylene radical from inspiring English sources
The central methylene radical of the benzoidal DDM structure is proposed as a red-emitting fluorophore/orange chromophore, with the green chromophore being a quinoidal methine resulting from the DDM radical.
These enzymes utilize a methylene radical generated on a unique methylated cysteine residue.
This radical abstracts a hydrogen atom from the methylthio group to generate a protein-based methylene radical.
Another molecule of SAM then undergoes reductive cleavage, and the resulting dAdo radical is believed to abstract a H-atom from the intermediate, generating a methylene radical species.
For Cys355 in RlmN, these roles are acquisition of the methyl group by nucleophilic attack on SAM and subsequent housing of the methylene radical for attack on the RNA substrate.
The first invokes the SN2 based transfer of the methyl group of SAM to a sulfide ion of the K-cluster to yield a transient methanethiol ligand and SAH as products; the methanethiol group is then activated to form a methylene radical via H-atom abstraction from a 5′-deoxyadenosyl radical, which is formed upon the reductive cleavage of a second molecule of SAM.
In general, partially fluorinated methyl and methylene radicals appear to have a greater than predicted propensity to lose hydrogen atoms rather than fluorine.
The carbon-centered radicals were identified as a mixture of the resonance-stabilized indenyl, cyclopentadienyl, and naphthalene 1-methylene radicals through the theoretical simulation of the radical's hyperfine structure.
In the particular cases of KOH/DMF or EDA basic media the chemical formation of the stable methylene blue radical was detected and it was characterized by EPR spectroscopy.
The electron affinity of methylene-blue was calculated from the calorimetrically measured enthalpy of the reaction between methylene-blue radical and Wurster's blue radical.
Singlet methylene (1CH2) and the formyl radical (HCO) have been studied in a premixed flat flame of CH4 and air by cavity ring-down spectroscopy at 1 atm.
