Human CYP2B6 and CYP2E1 were used to investigate the extent to which differential substrate selectivities between cytochrome P450 subfamilies reflect differences in active-site residues as opposed to distinct arrangement of the backbone of the enzymes. Reciprocal CYP2B6 and CYP2E1 mutants at active-site positions 103, 209, 294, 363, 367, and 477 (numbering according to CYP2B6) were characterize...

solid waste municipal landfill can have significant health, economic and environmental effects. therefore, there is a need to comprehensive land evaluation for locating the best landfill place. the purpose of this paper is showcasing the process undertaken to locate the best landfill site for municipal solid waste of golpayegan township. at first, three alternatives were proposed after field su...

in the present study the allelic polymorphisms of gh, ghr and tgfβ3 genes and its association with egg production traits were investigated. blood samples randomly were collected from breeder hens of mazandaran native fowls breeding station and transported to the laboratory in cold chain condition. dna was extracted using modified salting out method and the desired loci were amplified by specifi...

The title compound, [Sn(CH(3))(3)(C(6)H(5)O(2)S)](n), forms an infinite chain structure parallel to [100]. There are two mol-ecules of the complex in the asymmetric unit. The geometry of the Sn atoms in both mol-ecules is distorted trigonal-bipyramidal. The S and C atoms of the thio-phene rings in both mol-ecules are disordered over two sites with site-occupancy factors 0.799 (9)/0.201 (9) and ...

objective: furcal perforation is an undesirable complication that may occur during root canal therapy and seriously compromises the prognosis of endodontic treatment. the prognosis of furcal perforation repair depends on the prevention of bacterial infection of the perforation site. thus, use of a biocompatible material for complete sealing of the perforation site is critically important. this ...