Results 31 to 40 of about 178,249 (266)

Maximum likelihood models and algorithms for gene tree evolution with duplications and losses

BMC Bioinformatics, 2011
Background The abundance of new genomic data provides the opportunity to map the location of gene duplication and loss events on a species phylogeny. The first methods for mapping gene duplications and losses were based on a parsimony criterion, finding ...
Burleigh Gordon J, Górecki Pawel, Eulenstein Oliver   +2 more
doaj   +1 more source

Duplicated genes evolve slower than singletons despite the initial rate increase

BMC Evolutionary Biology, 2004
Background Gene duplication is an important mechanism that can lead to the emergence of new functions during evolution. The impact of duplication on the mode of gene evolution has been the subject of several theoretical and empirical comparative-genomic ...
Koonin Eugene V, Wolf Yuri I, Jordan I King   +2 more
doaj   +1 more source

Detecting functional divergence after gene duplication through evolutionary changes in posttranslational regulatory sequences. [PDF]

PLoS Computational Biology, 2014
Gene duplication is an important evolutionary mechanism that can result in functional divergence in paralogs due to neo-functionalization or sub-functionalization.
Alex N Nguyen Ba, Bob Strome, Jun Jie Hua, Jonathan Desmond, Isabelle Gagnon-Arsenault, Eric L Weiss, Christian R Landry, Alan M Moses   +7 more
doaj   +1 more source

Overdosage of HNF1B Gene Associated With Annular Pancreas Detected in Neonate Patients With 17q12 Duplication

Frontiers in Genetics, 2021
The annular pancreas (AP) is a congenital anomaly of the pancreas that can cause acute abdominal pain and vomiting after birth. However, the genetic cause of AP is still unknown, and no study has reported AP in patients with 17q12 duplication. This study
Feifan Xiao, Feifan Xiao, Xiuyun Liu, Xiuyun Liu, Yulan Lu, Bingbing Wu, Renchao Liu, Bo Liu, Kai Yan, Huiyao Chen, Huiyao Chen, Guoqiang Cheng, Laishuan Wang, Qi Ni, Qi Ni, Gang Li, Ping Zhang, Xiaomin Peng, Yun Cao, Chun Shen, Huijun Wang, Wenhao Zhou, Wenhao Zhou, Wenhao Zhou   +23 more
doaj   +1 more source

Mechanisms of Gene Duplication and Amplification [PDF]

Cold Spring Harbor Perspectives in Biology, 2015
Changes in gene copy number are among the most frequent mutational events in all genomes and were among the mutations for which a physical basis was first known. Yet mechanisms of gene duplication remain uncertain because formation rates are difficult to measure and mechanisms may vary with position in a genome.
Reams, Andrew B, Roth, John R
openaire   +4 more sources

Epigenetic reprogramming of lineage switching in cancer

FEBS Letters, EarlyView.
Cancer cells rarely commit to a single identity. Epigenetic mechanisms and tumor microenvironment cues push epithelial cells toward flexible, hybrid states that can shift into mesenchymal, neuroendocrine, or stem‐like fates, driving metastasis, drug resistance, and tumor heterogeneity. Targeting the epigenetic regulators behind these transitions, using
Ezgi Boyvatlı, Burcu Akman, Ezgi Bağırsakçı, Nese Atabey, Serap Erkek‐Ozhan   +4 more
wiley   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

FEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri, Ayaka Nagasato‐Ichikawa, Keita Iida, Shuhei Kimura, Akira Imamoto, Mariko Okada   +5 more
wiley   +1 more source

Algorithms: simultaneous error-correction and rooting for gene tree reconciliation and the gene duplication problem

BMC Bioinformatics, 2012
Background Evolutionary methods are increasingly challenged by the wealth of fast growing resources of genomic sequence information. Evolutionary events, like gene duplication, loss, and deep coalescence, account more then ever for incongruence between ...
Górecki Pawel, Eulenstein Oliver
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Modes of gene duplication contribute differently to genetic novelty and redundancy, but show parallels across divergent angiosperms. [PDF]

PLoS ONE, 2011
BACKGROUND: Both single gene and whole genome duplications (WGD) have recurred in angiosperm evolution. However, the evolutionary effects of different modes of gene duplication, especially regarding their contributions to genetic novelty or redundancy ...
Yupeng Wang, Xiyin Wang, Haibao Tang, Xu Tan, Stephen P Ficklin, F Alex Feltus, Andrew H Paterson   +6 more
doaj   +1 more source