Controlling and predicting the long-lived room-temperature phosphorescence (RTP) from organic materials are next challenges to address for realization of new efficient RTP systems. Here, a approach is developed reach these objectives by considering host–guest doped crystals, as well-suited model systems in that they allow comprehensive understanding synergetic structural interactions between cr...

σ-1R is the well-known subtype of σ-Rs that were originally proposed in 1976 (Martin et al., 1976). σ-1R is a 223 amino acid integral membrane protein consisting of a short N-terminus, a large C-terminus tail, and two transmembrane domains: one at the N-terminus and the other in the middle of the protein (Su et al., 2010). σ-1Rs are distributed throughout the brain. At the subcellular level, σ-...

NBO analysis and density functional theory (DFT: B3LYP/6-311+G**) based method were used to study the impacts of the anomeric effects (AE) on the conformational properties of 2-methoxy-1,2,4,5-tetrahydro-benzo[d]oxepine (1), -thiepine (2) and -selenepine (3). The Gibbs free energy difference (Geq–Gax) values (i.e. ΔGeq-ax) at 298.15 K and 1 atm between the axial and equatorial conformations inc...

In bacteria, multiple σ factors compete to associate with the RNA polymerase (RNAP) core enzyme to form a holoenzyme that is required for promoter recognition. During transcription initiation RNAP remains associated with the upstream promoter DNA via sequence-specific interactions between the σ factor and the promoter DNA while moving downstream for RNA synthesis. As RNA polymerase repetitively...

avila and molina [1] introduced the notion of generalized weak structures which naturally generalize minimal structures, generalized topologies and weak structures and the structures α(g),π(g),σ(g) and β(g). this work is a further investigation of generalized weak structures due to avila and molina. further we introduce the structures ro(g) and rc(g) and study the properties of the structur...