Pseudomonas testosteroni H-8 oxidizes certain lower alkylbenzene sulfonates at rates inversely related to the length of the alkyl group. Appreciable Q(O)2 values were observed for benzene sulfonate (BS), toluene sulfonate (TS), and ethylbenzene sulfonate (EBS), but not for propylbenzene sulfonate (PS) and higher homologues. Catechol oxidation was catalyzed by a constitutive catechol-2,3-oxygena...

The TOL plasmid-encoded enzymes of the methylbenzoate pathway in Pseudomonas putido mt-2 cometabolized 3-trifluoromethyl (TFM)-benzoate. Two products, 3-TFM -1,2-dihydroxy-2-hydrobcnzoate (3TFM-DHB) and 2-hydroxy-6-oxo-7,7, 7-trifluoro-hepta-2,4-dienoate (7TFHOD) were identified chemically and by spectroscopic properties. TFM-substituted analogues of the metabolites of the methylbenzoate pathwa...

Bioadhesives In article 2203404 by Nasim Annabi, Ali Khademhosseini, and Paul S. Weiss co-workers, an efficient chemical route for mussel-inspired functionalization of natural biomacromolecules is developed to enhance sutureless sealing surgical wounds. Compared standard catechol functionalization, poly(catechol) modification gelatin leads injectable bioglues with rapid gelation hemorrhage cont...

Front Cover: Caffeic acid is a component of coffee beans and bears catechol functionality. In article number 2100378 by Kotaro Satoh co-workers, caffeic acid-derived styrene monomer amenable to RAFT polymerization, which one the emerging methodologies for polymer synthesis. Combined with protection/deprotection processes, polymerization results in welldefined functional block copolymers consist...

The inhibition of urease from Sporosarcina pasteurii (SPU) and Canavalia ensiformis (jack bean, JBU) by a class six aromatic poly-hydroxylated molecules, namely mono- dimethyl-substituted catechols, was investigated on the basis inhibitory efficiency catechol scaffold. aim to probe key step mechanism proposed for SPU catechol, sulfanyl radical attack ring, as well obtain critical information ef...

Contemporary medical and dental adhesives often have difficulty sticking to wet surfaces or weaken with long-term exposure to water. Substantial research has been dedicated to finding a means of achieving adhesion in an aqueous environment. A study evaluates the adsorption of catechol relative to other chemical groups as means of gauging how effective they may be as adsorptive groups in adhesiv...

Ovarian cancer is associated with the highest mortality rate among gynaecological malignancies (Hennessy et al., 2009). There are over 205, 000 new cases and 125, 000 deaths annually from ovarian cancer (Jemal et al., 2011). Endometrial cancer is the fourth most common cancer among women and the most common gynecological cancer in the USA (Jemal et al., 2009). Multiple lines of evidence support...

O-methyltransferases (OMT) are important enzymes that are responsible for the synthesis of many small molecules, which include lignin monomers, flavonoids, alkaloids, and aroma compounds. One such compound is guaiacol, a small volatile molecule with a smoky aroma that contributes to tomato flavor. Little information is known about the pathway and regulation of synthesis of guaiacol. One possibl...

It was only natural that the earlier investigators of the action of the oxidase, tyrosinase, on catechol should have assumed that the first stage in the reaction is the formation of o-quinone. More recently this view of the reaction has gained additional approval from the studies carried on by Pugh and Raper (1). One of the difficulties encountered in trying to determine the nature of the initi...

Simultaneous determination of multicomponents of phenol, resorcinol and catechol with a chemometric technique a PCranking artificial neural network (PCranking-ANN) algorithm is reported in this study. Based on the data correlation coefficient method, 3 representative PCs are selected from the scores of original UV spectral data (35 PCs) as the original input patterns for ANN to build a neural n...