Alexander Belyaev

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Simian immunodeficiency virus (SIV) is closely related to human immunodeficiency virus (HIV), their matrix antigens (MAs) sharing some 50% sequence identity. MA is a component of Pr55Gag, the sole protein required for assembly of the virion shell. MA targets Pr55 to the plasma membrane, and facilitates incorporation of the virus envelope protein and(More)
The genome of a recently identified virus, hepatitis G virus (HGV), shows considerable homology to hepatitis C virus (HCV). Two HGV proteases similar to nonstructural proteins NS2 and NS3 of HCV were identified, and their cleavage site specificity was investigated. Amino acids essential for the protease activities were determined by mutation analysis. NS4A(More)
To determine the interaction between the gag precursor and the viral protease and to confirm the role of gag precursor in formation of human immunodeficiency virus type 1 particles, the gag and protease encoding regions of a proviral genome with mutations at the site between p17 and p24 or p24 and p15 were expressed by recombinant baculoviruses under the(More)
We perform a detail theoretical study including decays and jet fragmentation of all the important modes of the single top quark production and all basic background processes at the upgraded Tevatron and LHC colliders. Special attention was paid to the complete tree level calculation of the QCD fake background which was not considered in the previous(More)
Baculovirus multiple gene transfer vectors pAcAB3 and pAcAB4 have been developed to facilitate the insertion of three or four foreign genes respectively into the Autographa californica nuclear polyhedrosis virus (AcNPV) genome by a single co-transfection experiment. The pAcAB3 vector contains a polyhedrin promoter and two p10 promoters on either side of the(More)
We evaluate the relic density of neutralinos in the minimal supergravity (mSUGRA) model. All 2 → 2 neutralino annihilation diagrams, as well as all processes involving sleptons, charginos, neutralinos and third generation squarks are included. Rel-ativistic thermal averaging of the velocity times cross sections is performed. We find that co-annihilation(More)
In supersymmetric models with gravity-mediated SUSY breaking, universality of soft SUSY breaking sfermion masses m 0 is motivated by the need to suppress unwanted flavor changing processes. The same motivation, however, does not apply to soft breaking Higgs masses, which may in general have independent masses from matter scalars at the GUT scale. We explore(More)
We present an updated assessment of the viability of t − b − τ Yukawa coupling unification in supersymmetric models. For the superpotential Higgs mass parameter µ > 0, we find unification to less than 1% is possible, but only for GUT scale scalar mass parameter m 16 ∼ 8 − 20 TeV, and small values of gaugino mass m 1/2 < ∼ 400 GeV. Such models require that a(More)
CompHEP, as a partonic event generator, and PYTHIA, as a generator of final states of detectable objects, are interfaced. Thus, integrated tool is proposed for simulation of (almost) arbitrary collision processes at the level of detectable particles. Exact (multiparti-cle) matrix elements, convolution with structure functions, decays, partons hadronization(More)
We present a calculation of the single top quark cross section for proton-antiproton interactions with √ s = 1.8 TeV at the Fermilab Tevatron collider. We examine the effects of top mass, parton distribution functions, QCD scale, and collision energy, on each of the component production mechanisms, and study the kinematic distributions for standard model(More)