Crystal structure of β-cyclodextrin-4-chlorobenzoic acid complex: unusual C–Cl⋯π interaction between 4-chlorobenzoic acids in β-cyclodextrin dimer

2011 ◽  
Vol 22 (7) ◽  
pp. 847-850 ◽  
Author(s):  
En Ju Wang ◽  
Guang Ying Chen
Keyword(s):  
Crystal Structure ◽  
Acid Complex ◽  
Chlorobenzoic Acid ◽  
Cyclodextrin Dimer ◽  
Chlorobenzoic Acids

scholarly journals Crystal Structure of the Transthyretin-Retinoic-Acid Complex

1995 ◽  
Vol 234 (2) ◽  
pp. 563-569 ◽  
Author(s):  
Giuseppe Zanotti ◽  
Maria Rosa D'acunto ◽  
Giorgio Malpeli ◽  
Claudia Folli ◽  
Rodolfo Berni
Keyword(s):  
Crystal Structure ◽  
Retinoic Acid ◽  
Acid Complex

Production of metabolites from chlorobiphenyls by resting cells ofPseudomonasstrain LB400 after growth on different carbon sources

1999 ◽  
Vol 45 (2) ◽  
pp. 178-184 ◽  
Author(s):  
K A Billingsley ◽  
S M Backus ◽  
O P Ward
Keyword(s):  
Carbon Source ◽  
Polychlorinated Biphenyl ◽  
Carbon Sources ◽  
Resting Cells ◽  
Metabolite Formation ◽  
Chlorobenzoic Acid ◽  
Metabolite Production ◽  
Pcb Congeners ◽  
Chlorobenzoic Acids ◽  
General Order

Cells of Pseudomonas strain LB400, grown on biphenyl, glucose, or glycerol, transformed polychlorinated biphenyl (PCB) congeners into chlorobenzoic acid (CBA) metabolites. Transformation of the PCB congeners, 2,3-chlorobiphenyl (CBP), 2,2'-CBP, 2,5,4'-CBP, and 2,4,2',4'-CBP, produced the metabolites, 2,3-CBA, 2-CBA, 4-CBA, and 2,4-CBA, respectively. Rates and extents of PCB transformation and metabolite formation were highest with biphenyl-grown cells. Intermediate rates of metabolite production were observed with glycerol-grown cells, and lowest rates of production were found with glucose-grown cells. Regardless of carbon source, the rate of degradation of congeners was faster than the rate of production of CBAs. Relative rates of PCB transformation and metabolite production from different congeners with cells grown on a particular substrate followed the same general order, 2,3-CBA (from 2,3-CBP) > 2-CBA (from 2,2'-CBP) > 4-CBA (from 2,5,4'-CBP) > 2,4-CBA (from 2,4,2',4'-CBP). Pseudomonas strain LB400 appeared unable to grow on any of the chlorobenzoic acids. However, Pseudomonas strain LB400 cells grown on biphenyl appeared capable of degrading 2-CBA and 2,3-CBA but not 4-CBA nor 2,4-CBA. Cells grown on glycerol appeared unable to metabolize any CBAs.Key words: polychlorinated biphenyls, metabolites, Pseudomonas LB400.

EFFECT OF BENZOIC ACID AND ITS DERIVATIVES ON PLANT METABOLISM: 6- EFFECT OF CHLOROBENZOIC ACID DERIVATIVES ON THE CARBOHYDRATE METABOLISM OF STARVED AND SUCROSE-FED ETIOLATED BARLEY LEAVES

1963 ◽  
Vol 41 (6) ◽  
pp. 939-946 ◽  
Author(s):  
M. I. Naguib
Keyword(s):  
Carbohydrate Metabolism ◽  
Distilled Water ◽  
Sucrose Uptake ◽  
Previous Suggestion ◽  
Chlorobenzoic Acid ◽  
Low Concentrations ◽  
Chlorobenzoic Acids ◽  
Barley Leaves ◽  
Reducing Substances ◽  
Control Samples

The effects of chlorobenzoic acids on respiration, sucrose absorption, and carbohydrate metabolism of etiolated barley leaves were studied. The results showed that respiration was retarded to the same extent irrespective of position of substitution, in the presence of these substances; inhibition was more pronounced at higher concentrations of chlorobenzoic acids. At low concentrations, o-chlorobenzoic acid enhanced sucrose uptake and p-chlorobenzoic inhibited uptake while at higher concentrations, both compounds inhibited sucrose uptake by etiolated barley leaves.Tissue analysis for carbohydrates showed a decrease in all carbohydrate fractions of treated leaves compared to the control samples. Even the sucrose-fed treated samples showed a carbohydrate content similar to that of the samples starving in distilled water in spite of the variable amounts of sugars absorbed by such samples.These observations, together with excretion of some copper-reducing substances that disappeared after clearing, support the previous suggestion (4) that the tissue carbohydrates were mostly transformed to non-sugar substances that might have been excreted as a result of increased permeability in the presence of the chlorobenzoic acids. This suggestion, together with the possibility of deactivation of the respiratory dehydrogenases, may explain the reduced rates of respiration of the treated samples.

scholarly journals Influence of Root Exudates on the Bacterial Degradation of Chlorobenzoic Acids

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Blanka Vrchotová ◽  
Petra Lovecká ◽  
Milena Dražková ◽  
Martina Macková ◽  
Tomas Macek
Keyword(s):  
Plant Species ◽  
Root Exudates ◽  
Microbial Degradation ◽  
Contaminated Soils ◽  
Complex Mixture ◽  
Bacterial Degradation ◽  
Chlorobenzoic Acid ◽  
Chlorobenzoic Acids ◽  
Plant Exudates ◽  
Degradation In Soil

Degradation of chlorobenzoic acids (e.g., products of microbial degradation of PCB) by strains of microorganisms isolated from PCB contaminated soils was assessed. From seven bulk-soil isolates two strains unique in ability to degrade a wider range of chlorobenzoic acids than others were selected, individually and even in a complex mixture of 11 different chlorobenzoic acids. Such a feature is lacking in most tested degraders. To investigate the influence of vegetation on chlorobenzoic acids degraders, root exudates of two plant species known for supporting PCB degradation in soil were tested. While with individual chlorobenzoic acids the presence of plant exudates leads to a decrease of degradation yield, in case of a mixture of chlorobenzoic acids either a change in bacterial degradation specificity, associated with 3- and 4-chlorobenzoic acid, or an extension of the spectrum of degraded chlorobenzoic acids was observed.

scholarly journals Crystal Structure of Isoquinoline: Picric Acid Complex.

1992 ◽  
Vol 40 (6) ◽  
pp. 1612-1613 ◽  
Author(s):  
Motoaki GOTO ◽  
Hiroaki TAKAYANAGI ◽  
Kimio FURUHATA ◽  
Haruo OGURA ◽  
Kin-ichi SAITO ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Picric Acid ◽  
Acid Complex
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