this study aimed to examine the relationship between pigments and seed fall rate of iranian castor genotypes and genetic diversity, specifically 28 castor genotypes (27 native and 1 modified), a randomized complete block design with three replications was conducted in 2014 and 2015 at the research farm of islamic azad university in damghan, northern iran. during the growth period, the following...

As reported previously (Kimura, T., Ting, J., and Huang, J. J. (1972) J Biol. Chem., 247, 4476-4479), adrenal iron-sulfur protein, which contains no tryptophan and 1 tyrosine residue at position 82, displays an anomalous fluorescence peak at 331 nm. The present study conclusively demonstrates that he emission originates from the tyrosine residue with no contribution to the fluorescence of t...

Nonradiative dissipation of excitation energy is the major photoprotective mechanism in plants. The formation of zeaxanthin in the antenna of photosystem II has been shown to correlate with the onset of nonphotochemical quenching in vivo. We have used recombinant CP29 protein, over-expressed in Escherichia coli and refolded in vitro with purified pigments, to obtain a protein indistinguishable ...

A selective and sensitive fluorometric determination method for native fluorescent peptides has been developed. This method is based on intramolecular fluorescence resonance energy transfer (FRET) detection in a liquid chromatography (LC) system following precolumn derivatization of the amino groups of tryptophan (Trp)-containing peptides. In this detection process, we monitored the FRET from t...

The affinity of low density lipoprotein (LDL) to its receptor is very important, because most of LDL-uptake pathway is done by the LDL receptor and the change in size of LDL particle and the modification in its components may affects the LDL affinity for its receptor. In this study, the effects of lipophilic agents such as vitamin E and seven volatile oils: anethol, eugenol, geraniol, limonene,...

We report the effect of removing a section of guiding layer from the propagation paths of ST-quartz Love wave sensors; this offers the ease of fabrication of a polymer guiding layer whilst retaining the native surface of the quartz which may then be used for the attachment of a sensitizing layer. Data is presented for the rigid and viscous loading, which indicates a small reduction in mass sens...

One of the main challenges in studying single biomolecules a native or near-native environment is their constant diffusive motion. A method capable keeping biomolecule detection volume without disturbing its surrounding real-time particle tracking (SPT). There are number SPT methods use, and comparisons literature usually made based on experimental results, which, due to variations setups speci...