The solution structure of the B9(Asp) mutant of human insulin has been determined by two-dimensional 1H nuclear magnetic resonance spectroscopy. Thirty structures were calculated by distance geometry from 451 interproton distance restraints based on intra-residue, sequential and long-range nuclear Overhauser enhancement data, 17 restraints on phi torsional angles obtained from 3JH alpha HN coup...

<p style='text-indent:20px;'>We consider dispersing billiard tables whose boundary is piecewise smooth and the free flight function unbounded. We also assume there are no cusps. Such called type D in monograph of Chernov Markarian [<xref ref-type="bibr" rid="b9">9</xref>]. For a class non-degenerate billiards, we prove exponential decay correlation several other statistical pr...

We describe the isolation by reversed-phase h.p.l.c. of a number of products of the degradation of insulin by insulin proteinase and their direct analysis by fast atom bombardment mass spectrometry (f.a.b.-m.s.). Various semisynthetically labelled insulins were used, including [[2H2]GlyA1]insulin and [18O]LysB29]insulin. The results obtained confirm and extend the results obtained by non-mass-s...

We present infra-red (JHK) photometry of 52 isolated Be stars of spectral types O9–B9 and luminos-ity classes III–V. We describe a new method of reduction, enabling separation of interstellar reddening and circum-stellar excess. Using this technique we find that the disc emission makes a maximum contribution to the optical (B − V) colour of a few tenths of a magnitude. We find strong correlatio...

A continuous phytochemical study on the roots of Marsdenia tenacissima led to the isolation and identification of 13 new polyoxypregnane glycosides named marstenacissides B10-B17 (1, 2, 4, 7, 8, 11, 12, and 14) and marstenacissides A8-A12 (3, 9, 10, 13, and 15) in addition to two known polyoxypregnane glycosides marsdenosides M and L (5 and 6). Their structures were established by spectroscopic...

We report direct observations of anomalous magnetic-field and temperature dependences of the Shubnikov–de Haas oscillations in the organic superconductor b9-(BEDT-TTF)2SF5CH2CF2SO3. Unlike other BEDT-TTF based organic superconductors, a nonmetallic temperature dependence of the background magnetoresistance is clearly observed. It is speculated that the nonmetallic behavior may arise from a part...

Abstract Plant endophytic microorganisms, which can enhance plant growth and resistance to biotic abiotic stresses, are untapped resources with large potential applications for crop production. However, the community is influenced by multiple factors, such as host genetics, environment, other microbes. Thus, it important characterize well-adapted endophytes from native crops. We isolated 43 bac...

Background and aims: Vitamins are essential constituents of our diet that Longley have been known to influence the immune system. Vitamin D3 and B9 have received particular attention in recent years as these vitamins have been shown to have an unexpected and crucial effect on the immune response. 1, 25(OH)2D3 metabolizing enzymes and vitamin D r...