Results 51 to 60 of about 5,230,574 (296)

Positions under Positive Selection--Key for Selectivity and Potency of Scorpion  -Toxins [PDF]

open access: yesMolecular Biology and Evolution, 2009
Alpha-neurotoxins target voltage-gated sodium channels (Na(v)s) and constitute an important component in the venom of Buthidae scorpions. These toxins are short polypeptides highly conserved in sequence and three-dimensional structure, and yet they differ greatly in activity and preference for insect and various mammalian Na(v)s.
Hagar, Weinberger   +5 more
openaire   +2 more sources

Evaluating the Utility of Paired Tumor and Germline Targeted DNA Sequencing for Pediatric Oncology Patients: A Single Institution Report

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Objective To evaluate the diagnostic yield and utility of universal paired tumor–normal multigene panel sequencing in newly diagnosed pediatric solid and central nervous system (CNS) tumor patients and to compare the detection of germline pathogenic/likely pathogenic variants (PV/LPVs) against established clinical referral criteria for cancer ...
Natalie Waligorski   +9 more
wiley   +1 more source

Unveiling Resistance and Virulence Mechanisms under Darwinian Positive Selection for Novel Drug Discovery for Gardnerella vaginalis

open access: yesVenereology
Gardnerella vaginalis is a Gram-variable bacillus capable of causing bacterial vaginosis, a condition prevalent in reproductive-age women, this bacterium is present in almost 100% of cases and is also considered a gateway to various sexually transmitted ...
Eduarda Guimarães Sousa   +8 more
doaj   +1 more source

Local adaptation and archaic introgression shape global diversity at human structural variant loci

open access: yeseLife, 2021
Large genomic insertions and deletions are a potent source of functional variation, but are challenging to resolve with short-read sequencing, limiting knowledge of the role of such structural variants (SVs) in human evolution.
Stephanie M Yan   +6 more
doaj   +1 more source

Positive selection determines T cell receptor V beta 14 gene usage by CD8+ T cells. [PDF]

open access: yes, 1989
We report here a mAb, 14-2, reactive with TCRs that include V beta 14. The frequency of V beta 14+ T cells varies with CD4 and CD8 subset and is controlled by the H-2 genes.
Liao, N, Maltzman, J, RAULET, David H.
core  

Detecting Past Positive Selection through Ongoing Negative Selection [PDF]

open access: yesGenome Biology and Evolution, 2011
Detecting positive selection is a challenging task. We propose a method for detecting past positive selection through ongoing negative selection, based on comparison of the parameters of intraspecies polymorphism at functionally important and selectively neutral sites where a nucleotide substitution of the same kind occurred recently.
Bazykin, Georgii A.   +1 more
openaire   +2 more sources

Preferences of Pediatric Patients and Their Caregivers for Chemotherapy‐Induced Nausea and Vomiting Control Endpoints: A Mixed Methods Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Although not always achieved, complete chemotherapy‐induced nausea and vomiting (CINV) control is the conventional goal of CINV prophylaxis. In this two‐center, mixed‐methods study, we sought to understand the preferences of adolescent patients and family caregivers for CINV control endpoints.
Haley Newman   +8 more
wiley   +1 more source

The Prevalence and Molecular Characterization of Bovine Leukemia Virus among Dairy Cattle in Henan Province, China

open access: yesViruses
Enzootic bovine leukosis, a neoplastic disease caused by the bovine leukemia virus (BLV), was the primary cancer affecting cattle in China before 1985.
Yuxi Zhao   +8 more
doaj   +1 more source

SARS‐CoV‐2, an evolutionary perspective of interaction with human ACE2 reveals undiscovered amino acids necessary for complex stability

open access: yesEvolutionary Applications, 2020
The emergence of SARS‐CoV‐2 has resulted in nearly 1,280,000 infections and 73,000 deaths globally so far. This novel virus acquired the ability to infect human cells using the SARS‐CoV cell receptor hACE2. Because of this, it is essential to improve our
Vinicio Armijos‐Jaramillo   +3 more
doaj   +1 more source

Regulation of positive and negative selection and TCR signaling during thymic T cell development by capicua

open access: yeseLife, 2021
Central tolerance is achieved through positive and negative selection of thymocytes mediated by T cell receptor (TCR) signaling strength. Thus, dysregulation of the thymic selection process often leads to autoimmunity. Here, we show that Capicua (CIC), a
Soeun Kim   +5 more
doaj   +1 more source

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