Although cytochrome P450cam from Pseudomonas putida, the archetype for all heme monooxygenases, has long been known to have a closed active site, recent reports show that the enzyme can also be crystallized in at least two clusters of open conformations. This suggests that the enzyme may undergo significant conformational changes during substrate binding and catalytic turnover. However, these c...

Biophysical techniques developed during the last three decades have provided an increasingly detailed description of the internal processes associated with ligand capture and release by haem proteins. Myoglobin has long been the paradigm for these studies. More recently, cytochrome P450cam (the camphor-metabolizing cytochrome P450 from Pseudomonas putida) has also received considerable interest...

fumigant toxicity of camphor was studied against the aphid aphis craccivora koch and three associated natural enemies, i.e. coccinella undecimpunctata l., aphelinus albipodus hayat & fatima and aphidius colemani viereck. aphis craccivora was the most tolerant one compared with all tested natural enemies as the recorded lc50 values were 12.71, 6.33, 1.16 and 0.48 mg camphor/liter space for t...

(a) The idea of administering spirit camphor originated from the relief obtained by having a drop or two of spirit camphor with a little sugar in a well-established case of peptic ulcer by an aunt of mine. She had a temporary relief of pain after having the spirit. Observations were then made in Pavlov-and Heidenhain pouch dogs. These animals were prepared from the common pariah dogs. There wer...

background: the genus tanacetum (compositae) is represented by 26 species in the flora of iran, 12 of them are endemic. one report on the analysis of essential oil of tanacetum polycephalum boiss. species has been published. objective: aim of this study is to determine the chemical composition of the hydrodistilled oil of tanacetum pinnatum boiss. of iranian origin for the first time. methods: ...

abstract         background and objective: lavandula stoechas is a species of native and permanent plants in golestan province that belongs to the family lamiaceae. l. stoechas has been used in traditional medicine for treatment of various diseases. the aim of this study was to extract essential oil using steam distillation method from the flowers of l. stoechas collected from jahan-nama region...

Laboratory experiments were tested to detect the effect of crude camphor oil and its emulsion against 2nd instar larvae

Thymol, menthol and camphor are well known in the materia medica of western medicine as well as in that of the indigenous medicine in India. Thymol has been considered important on account of its powerful antiseptic, germicidal and anthelmintic properties. One of its chief uses in recent years has been in the treatment of hookworm disease. It is also largely used as a constituent of tooth-paste...