Two different putative precursor polypeptides of rat liver fumarase were synthesized when RNA prepared from rat liver were translated in vitro using the rabbit reticulocyte lysate system. One of these putative precursor polypeptides (P1) was synthesized as a larger molecular mass than the mature subunit of fumarase (45,000 daltons) by about 5,000 daltons and the other (P2) had the same molecula...

The development of membrane properties, firing patterns, and delta oscillations in neurons of the cat dorsal lateral geniculate nucleus (dLGN) was investigated in vitro during the first 7 postnatal weeks. Compared with adult neurons, the resting membrane potential was more depolarized at postnatal days 1-9 (P1-P9), the input resistance was higher at P1-P7, and action potentials had a higher thr...

Antigen P1, also called I/II, is one of the most abundant cell wall proteins of the mutans streptococci. It has been suggested that P1 may be involved in cell adherence to tooth surfaces and in sucrose-induced cell aggregation. As a first step toward fully understanding its biological functions, the P1 gene, which has been designated spaP1, from Streptococcus mutans NG5 (serotype c) has been cl...

milk thistle is used traditionally as a hepaprotective agent and supportive treatment of liver disorders. the most problems in milk thistle harvest are tall height, seed shedding and being spinous. in this trial, effects of 3 native populations (p1: isfahan violet flower, p 2: ahvaz white flower and p3: ahvaz violet flower) and 3 topping levels (t1:control, t2: topping in 7 leaves stage and t3:...

in 2011-2012 surveys for phytoplasma diseases, eggplant )solanum melongena l.( plants with phyllody symptoms were observed in eggplant fields of roodan (hormozgan province of iran). agent of roodan eggplant phyllody (rep) was transmitted from phyllody affected eggplant to eggplant and tomato by grafting and to periwinkle via dodder inoculation inducing phytoplasma-type symptoms. phytoplasmal in...

The biological effects of omega-3 and omega-6 fatty acids are determined by their mutual interactions. This interaction extremely affects various functions. Lower consumption of omega-3 during gestation leads to various disorders, even in hearing. We aimed to assess the effect of low omega-3/omega-6 ratios on auditory nerve conduction. In this experimental study, the auditory brainstem response...

We showed previously that rrn P1 promoters require unusually high concentrations of the initiating nucleoside triphosphates (ATP or GTP, depending on the promoter) for maximal transcription in vitro. We proposed that this requirement for high initiating NTP concentrations contributes to control of the rrn P1 promoters from the seven Escherichia coli rRNA operons. However, the previous studies d...

In this note we will solve two problems in combinatorial number theory using an easy fact on …nite di¤erences. We start with a few preliminaries: For any assertion A, we denote by [A] the Boolean value of the assertion A (that is, [A] = 1, if A is true; 0, if A is false). It is then clear that if B is a set, and A (X) is an assertion for every subset X of B, then X XB [A (X)] = jfX B j A (X) ho...

The Tetrahymena group I intron recognizes its oligonucleotide substrate in a two-step process. First, a substrate recognition duplex, called the P1 duplex, is formed. The P1 duplex then docks into the prefolded ribozyme core by forming tertiary contacts. P1 docking controls both the rate and the fidelity of substrate cleavage and has been extensively studied as a model for the formation of RNA ...

The maize p1 gene encodes an R2R3-MYB transcription factor that controls the biosynthesis of red flavonoid pigments in floral tissues of the maize plant. Genetic and quantitative trait locus analyses have also associated the p1 gene with the synthesis of maysin, a flavone glycoside from maize silks that confers natural resistance to corn earworm. Here, we show directly that the p1 gene induces ...