Results 31 to 40 of about 11,236,914 (284)

Collective dynamics differentiates functional divergence in protein evolution. [PDF]

open access: yesPLoS Computational Biology, 2012
Protein evolution is most commonly studied by analyzing related protein sequences and generating ancestral sequences through Bayesian and Maximum Likelihood methods, and/or by resurrecting ancestral proteins in the lab and performing ligand binding ...
Tyler J Glembo   +4 more
doaj   +1 more source

Modern Japanese ancestry-derived variants reveal the formation process of the current Japanese regional gradations

open access: yesiScience, 2023
Summary: Modern Japanese people have two major ancestral populations: indigenous Jomon hunter-gatherers and continental East Asian farmers. To determine the formation process of the current Japanese population, we developed a detection method for ...
Yusuke Watanabe, Jun Ohashi
doaj   +1 more source

La profondeur des souches ancestrales au Québec, une mesure de la régionalité de la population

open access: yesEspace populations sociétés, 2011
The ancestral roots of a population usually refer to the paternal lines, due to the transmission of surnames from one generation to another. However, paternal lines reach only a portion of the ancestors, whose relative importance diminishes as we go back
Marc Tremblay
doaj   +1 more source

Reconstruction of ancestral protein sequences and its applications

open access: yesBMC Evolutionary Biology, 2004
Background Modern-day proteins were selected during long evolutionary history as descendants of ancient life forms. In silico reconstruction of such ancestral protein sequences facilitates our understanding of evolutionary processes, protein ...
Grishin Nick V, Pei Jimin, Cai Wei
doaj   +1 more source

A PCA-based method for ancestral informative markers selection in structured populations [PDF]

open access: yesScience in China Series C: Life Sciences, 2009
Identification of population structure can help trace population histories and identify disease genes. Structured association (SA) is a commonly used approach for population structure identification and association mapping. A major issue with SA is that its performance greatly depends on the informativeness and the numbers of ancestral informative ...
Feng, Zhang, Lei, Zhang, Hong-Wen, Deng
openaire   +2 more sources

Reconstructed ancestral Myo-inositol-3-phosphate synthases indicate that ancestors of the Thermococcales and Thermotoga species were more thermophilic than their descendants.

open access: yesPLoS ONE, 2013
The bacterial genomes of Thermotoga species show evidence of significant interdomain horizontal gene transfer from the Archaea. Members of this genus acquired many genes from the Thermococcales, which grow at higher temperatures than Thermotoga species ...
Nicholas C Butzin   +5 more
doaj   +1 more source

Parsimonious reconstruction of network evolution

open access: yesAlgorithms for Molecular Biology, 2012
Background Understanding the evolution of biological networks can provide insight into how their modular structure arises and how they are affected by environmental changes.
Patro Rob   +5 more
doaj   +1 more source

A new method of inference of ancestral nucleotide and amino acid sequences. [PDF]

open access: yesGenetics, 1995
Abstract A statistical method was developed for reconstructing the nucleotide or amino acid sequences of extinct ancestors, given the phylogeny and sequences of the extant species. A model of nucleotide or amino acid substitution was employed to analyze data of the present-day sequences, and maximum likelihood estimates of parameters ...
Z, Yang, S, Kumar, M, Nei
openaire   +2 more sources

Greedy selection of species for ancestral state reconstruction on phylogenies: elimination is better than insertion. [PDF]

open access: yesPLoS ONE, 2010
Accurate reconstruction of ancestral character states on a phylogeny is crucial in many genomics studies. We study how to select species to achieve the best reconstruction of ancestral character states on a phylogeny.
Guoliang Li, Jian Ma, Louxin Zhang
doaj   +1 more source

Ovarian Sex Cord Stromal Tumors in Children and Adolescents—The European Standard Clinical Practice Recommendations

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT As part of the European Cooperative Study Group for Paediatric Rare Tumours initiative, we developed standard clinical practice guidelines for ovarian sex cord stromal tumors, based on comprehensive national and international cohort analyses, literature review, and a final expert consensus conference.
Dominik T. Schneider   +15 more
wiley   +1 more source

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