Results 31 to 40 of about 1,662,191 (275)

Examination of the APOBEC3 Barrier to Cross Species Transmission of Primate Lentiviruses

open access: yesViruses, 2021
The transmission of viruses from animal hosts into humans have led to the emergence of several diseases. Usually these cross-species transmissions are blocked by host restriction factors, which are proteins that can block virus replication at a specific ...
Amit Gaba, Ben Flath, Linda Chelico
doaj   +1 more source

On stability of exponential cosmological solutions with non-static volume factor in the Einstein-Gauss-Bonnet model [PDF]

open access: yes, 2016
A (n+1)-dimensional gravitational model with Gauss-Bonnet term and cosmological constant term is considered. When ansatz with diagonal cosmological metrics is adopted, the solutions with exponential dependence of scale factors: a_i ~ exp( v^i t), i = 1, .
Ivashchuk, V. D.
core   +2 more sources

SnapShot: Antiviral Restriction Factors

open access: yesCell, 2015
Restriction factors are cellular proteins that inhibit viruses at different steps of their replication cycle and represent an important first line of defense against viral pathogens. This SnapShot provides an overview of cell-intrinsic antiviral factors, describes their properties, and illustrates the striking variety of antiviral mechanisms as well ...
Silvia F. Kluge   +2 more
openaire   +2 more sources

Eternally inflating cosmologies from intersecting spacelike branes [PDF]

open access: yes, 2007
Intersecting spacelike braneworld cosmologies are investigated. The time axis is set on the scale parameter of extra space, which may include more than one timelike metric. Obtained are eternally inflating (i.e.
Chen C.-M.   +3 more
core   +2 more sources

Restricted heterogeneity of polyclonal rheumatoid factors [PDF]

open access: yesArthritis & Rheumatism, 1987
AbstractThe electrophoretic pattern of rheumatoid factor (RF) was investigated in 40 polyclonal sera, by using radiolabeled IgG. Thirty sera specifically bound IgG aggregates, correlating with their RF titer. The binding pattern was monoclonal or oligoclonal.
J P, Bouvet, Y X, Wu, J, Pillot
openaire   +2 more sources

A Long Cytoplasmic Loop Governs the Sensitivity of the Anti-viral Host Protein SERINC5 to HIV-1 Nef

open access: yesCell Reports, 2018
We recently identified the multipass transmembrane protein SERINC5 as an antiviral protein that can potently inhibit HIV-1 infectivity and is counteracted by HIV-1 Nef.
Weiwei Dai   +3 more
doaj   +1 more source

Evolutionary Toggling of Vpx/Vpr Specificity Results in Divergent Recognition of the Restriction Factor SAMHD1 [PDF]

open access: yes, 2013
SAMHD1 is a host restriction factor that blocks the ability of lentiviruses such as HIV-1 to undergo reverse transcription in myeloid cells and resting T-cells. This restriction is alleviated by expression of the lentiviral accessory proteins Vpx and Vpr
A Bergamaschi   +47 more
core   +3 more sources

Unsupervised Rotation Factorization in Restricted Boltzmann Machines [PDF]

open access: yesIEEE Transactions on Image Processing, 2020
Finding suitable image representations for the task at hand is critical in computer vision. Different approaches extending the original Restricted Boltzmann Machine (RBM) model have recently been proposed to offer rotation-invariant feature learning. In this paper, we present an extended novel RBM that learns rotation invariant features by explicitly ...
Mario Valerio Giuffrida   +1 more
openaire   +3 more sources

New insights into an X-traordinary Viral Protein

open access: yesFrontiers in Microbiology, 2014
Vpx is a protein encoded by members of the HIV-2/SIVsmm and SIVrcm/SIVmnd-2 lineages of primate lentiviruses, and which is packaged into viral particles.
Torsten eSchaller   +4 more
doaj   +1 more source

Classical basis for quantum spectral fluctuations in hyperbolic systems [PDF]

open access: yes, 2003
We reason in support of the universality of quantum spectral fluctuations in chaotic systems, starting from the pioneering work of Sieber and Richter who expressed the spectral form factor in terms of pairs of periodic orbits with self-crossings and ...
Müller, Sebastian
core   +2 more sources

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