@article { ISI:000291061500032,
	title = {Conformational transitions in ariesaema curvatum lectin: characterization of an acid induced active molten globule},
	journal = {Journal of Fluorescence},
	volume = {21},
	number = {2},
	year = {2011},
	month = {MAR},
	pages = {753-763},
	publisher = {SPRINGER/PLENUM PUBLISHERS},
	address = {233 SPRING ST, NEW YORK, NY 10013 USA},
	abstract = {<p>Biophysical characterization of a lectin from Ariesaema curvatum (ACL) was carried out using steady state as well as time resolved fluorescence and CD spectroscopy under various denaturing conditions. An intermediate with altered tryptophan microenvironment was detected in the phase diagram, which exibited pronounced secondary structure and hemagglutinating activity in presence of 0.25 M Gdn-HCl. An acid induced molten- globule like structure possessing activity and higher thermostability was detected. Transition to the molten globule state was reversible in nature. The lectin retained hemagglutinating activity even after incubation at 95 A degrees C. Both chemical and thermal unfolding of the lectin were found to consist of multistate processes. Fluorescence quenching of ACL was strong with acrylamide and KI. The single tryptophan was found to be surrounded by high density of the positively charged amino acid residues as shown by a ten fold higher K(sv) for KI compared to that for CsCl. The average lifetime of tryptophan fluorescence increased from 1.24 ns in the native state to 1.72 ns in the denatured state.</p>},
	keywords = {Araceae, Fluorescence lifetime, Hemagglutinin, Molten globule, Secondary structure, Thermostability, Unfolding},
	issn = {1053-0509},
	doi = {10.1007/s10895-010-0766-2},
	author = {Sharma, Urvashi and Gaikwad, Sushama M. and Suresh, C. G. and Dhuna, Vikram and Singh, Jatinder and Kamboj, Sukhdev Singh}
}
@article { ISI:000309644400011,
	title = {Enhanced photocatalytic activity of multi-doped TiO2 for the degradation of methyl orange},
	journal = {Applied Catalysis A-General},
	volume = {443},
	year = {2012},
	month = {NOV},
	pages = {96-102},
	publisher = {ELSEVIER SCIENCE BV},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>We report the synergistic effect of dopants like Gd, N and Sin enhancing the photocatalytic activity of TiO2. Nanosized TiO2 doped at both cationic and anionic sites by Gd, N and S exhibited increased photocatalytic activity compared to TiO2 doped with either Gd or N and S. All the doped TiO2 existed as anatase phase and no separate phase due to Gd2O3 was seen up to a Gd concentration of 2\%. The particle size as seen from the transmission electron micrograph was similar to 25 nm. The optical absorption property of TiO2 was improved by doping and redshift of the absorption edge is seen for all doped samples compared to pristine TiO2. The red shift of the absorption edge was the highest for the multiple ion-doped sample. Presence of bonded N and S in TiO2 was detected by X-ray photoelectron spectroscopy. Fluorescence lifetime studies indicated an enhanced lifetime for the charge carriers in the doped system compared to pristine TiO2. Photocatalytic activity study showed that the multi-doped sample has the highest activity for the degradation of methyl orange compared to Gd-TiO2, NS-TiO2 and pristine TiO2. The enhanced photocatalytic activity of the multi-doped TiO2 is attributed to factors such as improved optical absorption property and improved lifetime of the charge carriers. (C) 2012 Elsevier B.V. All rights reserved.</p>},
	keywords = {Fluorescence lifetime, Gd N S doped TiO2, Methyl orange, Photocatalyst, Photodegradation},
	issn = {0926-860X},
	doi = {10.1016/j.apcata.2012.07.032},
	author = {Charanpahari, A. and Umare, S. S. and Gokhale, S. P. and Sudarsan, V. and Sreedhar, B. and Sasikala, R.}
}
