The kinetics of a-helix formation in polyalanine and polyglycine eicosamers (20-mers) were examined using torsional-coordinate molecular dynamics (MD). Of one hundred fifty-five MD experiments on extended (Ala)20 carried out for 0.5 ns each, 129 (83%) formed a persistent a-helix. In contrast, the extended state of (Gly)20 only formed a righthanded a-helix in two of the 20 MD experiments (10%), ...

Rhodonellum psychrophilum GCM71(T), isolated from the cold and alkaline submarine ikaite columns in the Ikka Fjord in Greenland, displays optimal growth at 5 to 10°C and pH 10. Here, we report the draft genome sequence of this strain, which may provide insight into the mechanisms of adaptation to these extreme conditions.

The manufacturing industry mostly uses CNC Milling machines in processing products that require high precision values. This machine is capable of a wide variety feeding methods, inclinations, feed speeds, various tool styles, and much more. purpose this research to analyze one method infeed direction with the Zig-Zag effect by using 2 types normal variable combined variations spindle speed DOC ...

The toroid-shaped nuclear protein export factor CRM1 is constructed from 21 tandem HEAT repeats, each of which contains an inner (B) and outer (A) α-helix joined by loops. Proteins targeted for export have a nuclear export signal (NES) that binds between the A-helices of HEAT repeats 11 and 12 on the outer surface of CRM1. RanGTP binding increases the affinity of CRM1 for NESs. In the absence o...

Introduction Collagen consists of three polypeptide chains that fold into a triple helix. Each natural chain contains many repeats of the sequence: XaaYaaGly, in which a third of the Xaa and Yaa residues are (2S)-proline (Pro). The pucker of a proline ring can be influenced by electronegative substituents, such as the hydroxyl in the naturally occurring residue, (2S,4R)-4-hydroxyproline (Hyp) [...

Ac current-driven motions of spiral spin textures can give rise to emergent electric fields acting on conduction electrons. This in turn leads the electromagnetic induction effect which may realize quantum inductor elements micrometer size. ${\mathrm{YMn}}_{6}{\mathrm{Sn}}_{6}$ is a helimagnet with short helical period (2--3 nm) that shows this type inductance beyond room temperature. To identi...

Recently a new approach to constructing potentiometers with non-linear taper was proposed. Its main idea is reach dependence of output voltage on rotation angle using helical resistive element variable radius the helix and cross-section. As it has been shown before, problem calculation such potentiometer solution for all continually differentiable tapers, but usefulness this construction still ...