Browsing by Subject "Recombination, Genetic"
Now showing items 1-12 of 12
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A functional analysis of the spacer of V(D)J recombination signal sequences.
(PLoS Biol, 2003-10)During lymphocyte development, V(D)J recombination assembles antigen receptor genes from component V, D, and J gene segments. These gene segments are flanked by a recombination signal sequence (RSS), which serves as the ... -
Complex evolutionary trajectories of sex chromosomes across bird taxa.
(Science, 2014-12-12)Sex-specific chromosomes, like the W of most female birds and the Y of male mammals, usually have lost most genes owing to a lack of recombination. We analyze newly available genomes of 17 bird species representing the avian ... -
Distinctive variation in the U3R region of the 5' Long Terminal Repeat from diverse HIV-1 strains.
(PloS one, 2018-01)Functional mapping of the 5'LTR has shown that the U3 and the R regions (U3R) contain a cluster of regulatory elements involved in the control of HIV-1 transcription and expression. As the HIV-1 genome is characterized by ... -
Dynamic evolution of base composition: causes and consequences in avian phylogenomics.
(Mol Biol Evol, 2011-08)Resolving the phylogenetic relationships among birds is a classical problem in systematics, and this is particularly so when it comes to understanding the relationships among Neoaves. Previous phylogenetic inference of birds ... -
Essential role of beta-adrenergic receptor kinase 1 in cardiac development and function.
(Proc Natl Acad Sci U S A, 1996-11-12)The beta-adrenergic receptor kinase 1 (beta ARK1) is a member of the G protein-coupled receptor kinase (GRK) family that mediates the agonist-dependent phosphorylation and desensitization of G protein-coupled receptors. ... -
Evidence that the human pathogenic fungus Cryptococcus neoformans var. grubii may have evolved in Africa.
(PLoS One, 2011-05-11)Most of the species of fungi that cause disease in mammals, including Cryptococcus neoformans var. grubii (serotype A), are exogenous and non-contagious. Cryptococcus neoformans var. grubii is associated worldwide with avian ... -
Identification and utilization of arbitrary correlations in models of recombination signal sequences.
(Genome Biol, 2002)BACKGROUND: A significant challenge in bioinformatics is to develop methods for detecting and modeling patterns in variable DNA sequence sites, such as protein-binding sites in regulatory DNA. Current approaches sometimes ... -
Multiple, conserved cryptic recombination signals in VH gene segments: detection of cleavage products only in pro B cells.
(J Exp Med, 2007-12-24)Receptor editing is believed to play the major role in purging newly formed B cell compartments of autoreactivity by the induction of secondary V(D)J rearrangements. In the process of immunoglobulin heavy (H) chain editing, ... -
Next-generation polyploid phylogenetics: rapid resolution of hybrid polyploid complexes using PacBio single-molecule sequencing.
(The New phytologist, 2017-01)Difficulties in generating nuclear data for polyploids have impeded phylogenetic study of these groups. We describe a high-throughput protocol and an associated bioinformatics pipeline (Pipeline for Untangling Reticulate ... -
Polymorphisms of homologous recombination genes and clinical outcomes of non-small cell lung cancer patients treated with definitive radiotherapy.
(PloS one, 2011-01)The repair of DNA double-strand breaks (DSBs) is the major mechanism to maintain genomic stability in response to irradiation. We hypothesized that genetic polymorphisms in DSB repair genes may affect clinical outcomes among ... -
Prospective estimation of recombination signal efficiency and identification of functional cryptic signals in the genome by statistical modeling.
(J Exp Med, 2003-01-20)The recombination signals (RS) that guide V(D)J recombination are phylogenetically conserved but retain a surprising degree of sequence variability, especially in the nonamer and spacer. To characterize RS variability, we ... -
Reconstruction of gross avian genome structure, organization and evolution suggests that the chicken lineage most closely resembles the dinosaur avian ancestor.
(BMC Genomics, 2014-12-11)BACKGROUND: The availability of multiple avian genome sequence assemblies greatly improves our ability to define overall genome organization and reconstruct evolutionary changes. In birds, this has previously been impeded ...
