scholarly journals Biocatalytic Asymmetric Alkene Reduction: Crystal Structure and Characterization of a Double Bond Reductase from Nicotiana tabacum

ACS Catalysis ◽  
2013 ◽  
Vol 3 (3) ◽  
pp. 370-379 ◽  
Author(s):  
David J. Mansell ◽  
Helen S. Toogood ◽  
John Waller ◽  
John M. X. Hughes ◽  
Colin W. Levy ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Double Bond ◽  
Nicotiana Tabacum ◽  
Double Bond Reductase

scholarly journals Characterization of 12-Oxophytodienoic Acid Reductases from Rose-scented Geranium (Pelargonium graveolens)

2016 ◽  
Vol 11 (12) ◽  
pp. 1934578X1601101
Author(s):  
Miu Iijima ◽  
Hiromichi Kenmoku ◽  
Hironobu Takahashi ◽  
Jung-Bum Lee ◽  
Masao Toyota ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metabolic Engineering ◽  
Double Bond ◽  
Carbonyl Compound ◽  
Catalytic Properties ◽  
Biotechnological Applications ◽  
Pelargonium Graveolens ◽  
Double Bond Reductase ◽  
Herbal Plant

Pelargonium graveolens L'Hér, also referred to as rose geranium, is a popular herbal plant with typical rosy fragrance largely based on the blend of monoterpenoid constituents. Among them, citronellol, which is biosynthesized from geraniol via double bond reduction, is the most abundant scent compound. In this study, three 12-oxophytodienoic acid reductases (PgOPR1–3) have been cloned from P. graveolens, as possible candidates for the double-bond reductase involved in citronellol biosynthesis. The bacterially expressed recombinant PgOPRs did not reduce geraniol to citronellol, but stereoselectively converted citral into ( S)-citronellal in the presence of NADPH. Thus, the α,β-unsaturated carbonyl moiety in the substrate is essential for the catalytic activity of PgOPRs, as reported for OPRs from other plants and structurally related yeast old yellow enzymes. PgOPRs promiscuously accepted linear and cyclic α,β-unsaturated carbonyl substrates, including methacrolein, a typical reactive carbonyl compound. The possible biotechnological applications for PgOPRs in plant metabolic engineering, based on their catalytic properties, are discussed herein.

Isolation and characterization of AaAER, a novel double bond reductase from Artemisia annua

2014 ◽  
Vol 24 (3) ◽  
pp. 331-337 ◽  
Author(s):  
Yu-Kun Wei ◽  
Jian-Xu Li ◽  
Wen-Li Hu ◽  
Chang-Qing Yang ◽  
Ling-Jian Wang
Keyword(s):  
Double Bond ◽  
Artemisia Annua ◽  
Isolation And Characterization ◽  
Double Bond Reductase

Crystal structure analysis of 4-R-phenyl-2,6-dimethyl-3,5-N-(dimethylcarbamoyl)-1,4-dihydropyridines [R=2-nitro (1), 4-methoxy (2) and 3,4-dichloro (3)]

1998 ◽  
Vol 213 (3) ◽  
Author(s):  
M. Bidya Sagar ◽  
K. Ravikumar ◽  
Y. S. Sadanandam
Keyword(s):  
Crystal Structure ◽  
Calcium Channel ◽  
Structure Analysis ◽  
Crystal Structure Analysis ◽  
Calcium Channel Antagonists

AbstractThe crystallographic characterization of the following three calcium channel antagonists is reported here: 2,6-dimethyl-3,5-dicarbamoyl-4-[2-nitro]-1,4-dihydropyridine (

scholarly journals Heteroleptic [Cu(P^P)(N^N)][PF6] Complexes: Effects of Isomer Switching from 2,2′-biquinoline to 1,1′-biisoquinoline

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 185
Author(s):  
Nina Arnosti ◽  
Marco Meyer ◽  
Alessandro Prescimone ◽  
Edwin C. Constable ◽  
Catherine E. Housecroft
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Nmr Spectra ◽  
Phenyl Ether ◽  
Quantum Yields ◽  
Dynamic Processes ◽  
Electrochemical Behaviors ◽  
Ambient Temperatures ◽  
Π Stacking

The preparation and characterization of [Cu(POP)(biq)][PF6] and [Cu(xantphos)(biq)][PF6] are reported (biq = 1,1′-biisoquinoline, POP = bis(2-(diphenylphosphanyl)phenyl)ether, and xantphos = (9,9-dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphane). The single crystal structure of [Cu(POP)(biq)][PF6] 0.5Et2O was determined and compared to that in three salts of [Cu(POP)(bq)]+ in which bq = 2,2′-biquinoline. The P–C–P angle is 114.456(19)o in [Cu(POP)(biq)]+ compared to a range of 118.29(3)–119.60(3)o [Cu(POP)(bq)]+. There is a change from an intra-POP PPh2-phenyl/(C6H4)2O-arene π-stacking in [Cu(POP)(biq)]+ to a π-stacking contact between the POP and bq ligands in [Cu(POP)(bq)]+. In solution and at ambient temperatures, the [Cu(POP)(biq)][PF6]+ and [Cu(xantphos)(biq)]+ cations undergo several concurrent dynamic processes, as evidenced in their multinuclear NMR spectra. The photophysical and electrochemical behaviors of the heteroleptic copper (I) complexes were investigated, and the effects of changing from bq to biq are described. Short Cu···O distances within the [Cu(POP)(biq)]+ and [Cu(xantphos)(biq)]+ cations may contribute to their very low photoluminescent quantum yields.

scholarly journals Design, growth, and characterization of Y2Mo4O15 crystals for Raman laser applications

RSC Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 1164-1171
Author(s):  
Xiangmei Wang ◽  
Zeliang Gao ◽  
Chunyan Wang ◽  
Xiaojie Guo ◽  
Youxuan Sun ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Physical Properties ◽  
Raman Laser ◽  
Laser Applications ◽  
Potential Use

This work reports the crystal structure and physical properties of the Y2Mo4O15 crystal and its potential use in the Raman laser.

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