The G protein coupled receptor rhodopsin contains a pocket within its seven-transmembrane helix (TM) structure, which bears the inactivating 11-cis-retinal bound by a protonated Schiff-base to Lys296 in TM7. Light-induced 11-cis-/all-trans-isomerization leads to the Schiff-base deprotonated active Meta II intermediate. With Meta II decay, the Schiff-base bond is hydrolyzed, all-trans-retinal is...

Medicinal plante Borazambol with the scientific name of Perovskia abrotanoides Karel. belongs to the family Lamiaceae. It is growing wild in the margin of mountainous roads of arid and cold climate of north Iran. It is for a long time that indigenous people by different methods in traditional medicine use its products in preventing and curing diseases. In this research, essential oils of Perovs...

trans-2-Hexenal, one of the C6 green leaf volatiles, is potentially useful for the control of Bradysia odoriphaga Yang et Zhang. In this study, the biological activity of trans-2-hexenal on B. odoriphaga was assessed in the laboratory. trans-2-Hexenal was observed to kill B. odoriphaga in different developmental stages at a relatively low concentration under fumigation. The respiration rate in ...

These experiments examine changes in the agonist-induced conductance that occur when the agonist-receptor complex is perturbed. Voltage-clamped Electrophorus electroplaques are exposed to the photoisomerizable agonist trans-Bis-Q. A 1-microsecond laser flash photoisomerizes some trans-Bis-Q molecules bound to receptors; because the cis configuration is not an agonist, receptor channels close wi...

Lipid-binding sites and properties were compared in the hetero-oligomeric cytochrome (cyt) b(6)f and the yeast bc(1) complexes that function, respectively, in photosynthetic and respiratory electron transport. Seven lipid-binding sites in the monomeric unit of the dimeric cyanobacterial b(6)f complex overlap four sites in the Chlamydomonas reinhardtii algal b(6)f complex and four in the yeast b...

extended abstract 1. introduction the translation of literary works in iran has always been subject to social and political conditions, intellectual tendencies, and dominant ideologies of the related historical period. hence, in each period the translators were inclined to translate specific literary works according to the beliefs and viewpoint of a distinguished political and social group. thu...

In spite of the fact that individual races of Botryococcus braunii are widely distributed in lakes, reports of the co-existence of different chemical races are rare. Here we report biomarker evidence for the co-occurrence of three different races of B. braunii (A, B and L) in the water column and sediments of El Junco Lake, a freshwater crater lake at 700 m elevation on San Cristóbal Island, Ga...

The square planar bisnitrile platinum(II) derivatives PtCl2(NCR)2 (R=Ph (1 a); Et b); p-C6H4F c); p-C6H4tBu d); m-C6H3Me2 e); o,p-C6H2Me3 f)) react with tetrabutylammonium hydroxide to render the monoaquo [NBu4][trans-PtCl(HNCOR)2(OH2)] (2 a–2 f). water molecule is σ-coordinated platinum and binding reinforced by two strong hydrogen bonds neighboring amidate ligands (OH⋅⋅⋅OC). Substitution of i...

The essential oil isolated from Turkish tarragon (Artemisia dracunculus) by hydrodistillation was analyzed by GC-MS. Thirty compounds representing 99.5% of total oil were identified. The predominant components in the oil were (Z)-anethole (81.0%), (Z)-beta-ocimene (6.5%), (E)-beta-ocimene (3.1%), limonene (3.1%), and methyleugenol (1.8%). The antibacterial and antifungal activities of the essen...