The asymmetric unit of the title compound, [Mn(CH(3)CN)(C(8)H(6)N(4))(2)(H(2)O)][Mn(C(8)H(6)N(4))(2)(H(2)O)(2)](ClO(4))(4)·2H(2)O, contains two distinct cationic Mn(II) complexes, four perchlorate anions and two solvent water mol-ecules. In the two complexes, both Mn(II) ions are six-coordinated in a distorted octa-hedral environment, but one Mn ion has a cis-N(5)O coordination geometry defined...

Carotenoid spheroidene (SPO) functions for photoprotection in the photosynthetic reaction centers (RCs) and effectively dissipates its triplet excitation energy. Sensitized cis-to-trans isomerization was proposed as a possible mechanism for a singlet-triplet energy crossing for the 15,15'-cis-SPO; however, it has been questioned recently. To understand the dissipative photoprotective mechanism ...

Guggulsterone (GS) [4,17(20)-pregnadiene-3,16-dione] is a phytosterol found in the gum resin of the Commiphora mukul. GS exists naturally in two stereoisomers: E-GS (cis-GS) and Z-GS (trans-GS). In this study, the effects of both isomers on expression of the cytoprotective enzyme heme oxygenase-1 (HO-1) were evaluated in human mammary epithelial (MCF10A) cells. NF-E2-related factor 2 (Nrf2) is ...

Permethrin is the most popular synthetic pyrethroid insecticide in agriculture and public health. For the development of the enzyme-linked immunosorbent assay (ELISA) to evaluate human exposure to permethrin, the glycine conjugate (DCCA-glycine) of a major metabolite, cis/trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane-1-carboxylic acid (DCCA), of permethrin was established as the target a...

The enzyme cis-3-chloroacrylic acid dehalogenase (cis-CaaD) is found in a bacterial pathway that degrades a synthetic nematocide, cis-1,3-dichloropropene, introduced in the 20th century. The previously determined crystal structure of cis-CaaD and its promiscuous phenylpyruvate tautomerase (PPT) activity link this dehalogenase to the tautomerase superfamily, a group of homologous proteins that a...

The aim of this study was to assess the effect rubber seed kernel heat processing on in vitro rumen biohydrogenation fatty acids and fermentation. experiment conducted with a completely randomized design (CRD). inclusion RSK at 0% (CON) 20% different methods as follows: Raw (RAWR), roasted (ROR), microwave irradiated (MIR), were heated hot air oven (RHO) total mixed ration (TMR) diets. hydrogen...

Dinuclear and polymer complexes of 4-phenylpyridine (4-phpy), pyazine (pyz), 4,4′-bipyridine (4,4′-bpy) were prepared by using cis-[Rh2(4-Me-pf)2(O2CR)2] (4-Me-pf- =N,N’-bis(4-methylphenyl)formamidinate anion; R = CF3 CMe3) as precursor dinuclear units. The structures cis-[Rh2II,II(4-Me-pf)2(O2CR)2(4-phpy)2] cis-[Rh2II,III(4-Me-pf)2(O2CCMe3)2(4-phpy)2]BF4 [Rh2II,II(4-Me-pf)2(O2CR)2(L)]n (L pyz ...

The promoter of the major immediate-early (MIE) genes of human cytomegalovirus (HCMV), also referred to as the CMV promoter, possesses a cis-acting element positioned downstream of the TATA box between positions -14 and -1 relative to the transcription start site (+1). We determined the role of the cis-acting element in viral replication by comparing recombinant viruses with the cis-acting elem...

the composition of the essential oils of teucrium chamaedrys l. belongs to the family lamiaceae, it is growing wild in the margin of mountainous roads of arid and cold climate of north iran. in this research, essential oils of teucrium chamaedrys l., extracted and measured at the different location by different methods of distillationand then were analyzed by gc and gc/ms. investigation and com...

We report on the first experimental observation of formic acid dimers composed of two molecules of the higher-energy cis conformer. The cis-cis formic acid dimers are prepared in an argon matrix by selective vibrational excitation of the ground state trans conformer (deuterated form HCOOD) combined with thermal annealing of the matrix at about 30 K. Five cis-cis formic acid dimers are predicted...