Abstract:
:Circadian ( approximately 24 hr) rhythms of behavior and physiology are driven by molecular clocks that are endogenous to most organisms. The mechanisms underlying these clocks are remarkably conserved across evolution and typically consist of auto-regulatory loops in which specific proteins (clock proteins) rhythmically repress expression of their own genes. Such regulation maintains 24-hr cycles of RNA and protein expression. Despite the conservation of these mechanisms, however, questions are now being raised about the relevance of different molecular oscillations. Indeed, several studies have demonstrated that oscillations of some critical clock genes can be eliminated without loss of basic clock function. Here, we describe the multiple levels at which clock gene/protein expression and function can be rhythmically regulated-transcription, protein expression, post-translational modification, and localization-and speculate as to which aspect of this regulation is most critical. While the review is focused on Drosophila, we include some discussion of mammalian clocks to indicate the extent to which the questions concerning clock mechanisms are similar, regardless of the organism under study.
journal_name
Geneticsjournal_title
Geneticsauthors
Zheng X,Sehgal Adoi
10.1534/genetics.107.088658subject
Has Abstractpub_date
2008-03-01 00:00:00pages
1147-55issue
3eissn
0016-6731issn
1943-2631pii
178/3/1147journal_volume
178pub_type
杂志文章,评审相关文献
GENETICS文献大全abstract::A novel fine structure mapping method for quantitative traits is presented. It is based on Bayesian modeling and inference, treating the number of quantitative trait loci (QTLs) as an unobserved random variable and using ideas similar to composite interval mapping to account for the effects of QTLs in other chromosome...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:1998-03-01 00:00:00
abstract::Telomeric DNA repeats are key features of chromosomes that allow the maintenance of integrity and stability in the telomeres. However, interstitial telomere sites (ITSs) can also be found along the chromosomes, especially near the centromere, where they may appear following chromosomal rearrangements like Robertsonian...
journal_title:Genetics
pub_type: 杂志文章
doi:10.1534/genetics.114.166421
更新日期:2014-08-01 00:00:00
abstract::RecQ helicases function in the maintenance of genome stability in many organisms. The filamentous fungus Neurospora crassa has two RecQ homologs, QDE3 and RECQ2. We found that the qde-3 recQ2 double mutant showed a severe growth defect. The growth defect was alleviated by mutation in mei-3, the homolog of yeast RAD51,...
journal_title:Genetics
pub_type: 杂志文章
doi:10.1534/genetics.105.041756
更新日期:2006-01-01 00:00:00
abstract::Drosophila melanogaster, an ancestrally African species, has recently spread throughout the world, associated with human activity. The species has served as the focus of many studies investigating local adaptation relating to latitudinal variation in non-African populations, especially those from the United States and...
journal_title:Genetics
pub_type: 杂志文章
doi:10.1534/genetics.114.161463
更新日期:2014-05-01 00:00:00
abstract::Functional analyses of the Arabidopsis genome require analysis of the gametophytic generation, since approximately 10% of the genes are expressed in the male gametophyte and approximately 9% in the female gametophyte. Here we describe the genetic and molecular characterization of 67 Ds insertion lines that show reduce...
journal_title:Genetics
pub_type: 杂志文章
doi:10.1534/genetics.108.090852
更新日期:2009-04-01 00:00:00
abstract::The interval mapping method is widely used for the mapping of quantitative trait loci (QTLs) in segregating generations derived from crosses between inbred lines. The efficiency of detecting and the accuracy of mapping multiple QTLs by using genetic markers are much increased by employing multiple QTL models instead o...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:1993-09-01 00:00:00
abstract::We present a genetic map based on microsatellite polymorphisms for the African human malaria vector, Anopheles gambiae. Polymorphisms in laboratory strains were detected for 89% of the tested microsatellite markers. Genotyping was performed for individual mosquitos from 13 backcross families that included 679 progeny....
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:1996-06-01 00:00:00
abstract::Neurospora crassa is an established reference organism to investigate carotene biosynthesis and light regulation. However, there is little evidence of its capacity to produce secondary metabolites. Here, we report the role of the fungal-specific regulatory velvet complexes in development and secondary metabolism (SM) ...
journal_title:Genetics
pub_type: 杂志文章
doi:10.1534/genetics.119.302277
更新日期:2019-07-01 00:00:00
abstract::A lethal locus (l(2)br7;35B6-10), near Adh on chromosome arm 2L of D. melanogaster, is identified with Plunkett's dominant suppressor of Hairless (H). Of eight new alleles, seven act as dominant suppressors of H, the eighth is a dominant enhancer of H. One of the suppressor alleles is both a leaky lethal and a weak s...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:1982-07-01 00:00:00
abstract::Several human pathogens (e.g., Bacillus anthracis, Yersinia pestis, Bordetella pertussis, Plasmodium falciparum, and Mycobacterium tuberculosis) have very restricted unselected allelic variation in structural genes, which hinders study of the genetic relationships among strains and strain-trait correlations. To addres...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:2002-12-01 00:00:00
abstract::We examine the influence of nonrandom mating and immigration on the evolutionary dynamics of cytonuclear associations in hybrid zones. Recursion equations for allelic and genotypic cytonuclear disequilibria were generated under models of (1) migration alone, assuming hybrid zone matings are random with respect to cyto...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:1989-08-01 00:00:00
abstract::The mitochondrial genome of Neurospora is usually found in a single covalently closed circular 62-kbp DNA molecule. We report here that the mitochondrial genome of a phenotypic revertant of a stopper mutant (stp-ruv) is contained primarily in two separate, nonoverlapping, autonomously replicating circular chromosomes....
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:1989-04-01 00:00:00
abstract::The need to regulate X chromosome expression in Caenorhabditis elegans arises as a consequence of the primary sex-determining signal, the X/A ratio (the ratio of X chromosomes to sets of autosomes), which directs 1X@A animals to develop as males and 2X/2A animals to develop as hermaphrodites. C. elegans possesses a do...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:1994-08-01 00:00:00
abstract::Recombination of phage lambda attachment sites occurs by sequential exchange of the DNA strands at two specific locations. The first exchange produces a Holliday structure, and the second resolves it to recombinant products. Heterology for base substitution mutations in the region between the two strand exchange point...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:1989-08-01 00:00:00
abstract::Signaling by the second messenger inositol 1,4,5-trisphosphate is thought to affect several developmental and physiological processes. Mutants in the inositol 1,4,5-trisphosphate receptor (itpr) gene of Drosophila exhibit delays in molting while stronger alleles are also larval lethal. In a freshly generated set of EM...
journal_title:Genetics
pub_type: 杂志文章
doi:10.1534/genetics.166.1.225
更新日期:2004-01-01 00:00:00
abstract::We analyze nucleotide polymorphism data for a large number of loci in areas of normal to high recombination in Drosophila melanogaster and D. simulans (24 and 16 loci, respectively). We find a genome-wide, systematic departure from the neutral expectation for a panmictic population at equilibrium in natural population...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:2000-09-01 00:00:00
abstract::Inbreeding depression, which refers to reduced fitness among offspring of related parents, has traditionally been studied using pedigrees. In practice, pedigree information is difficult to obtain, potentially unreliable, and rarely assessed for inbreeding arising from common ancestors who lived more than a few generat...
journal_title:Genetics
pub_type: 杂志文章
doi:10.1534/genetics.111.130922
更新日期:2011-09-01 00:00:00
abstract::The availability of the complete DNA sequence of the Chlamydomonas reinhardtii genome and advanced computational biology tools has allowed elucidation and study of the small ubiquitin-like modifier (SUMO) system in this unicellular photosynthetic alga and model eukaryotic cell system. SUMO is a member of a ubiquitin-l...
journal_title:Genetics
pub_type: 杂志文章
doi:10.1534/genetics.108.089128
更新日期:2008-05-01 00:00:00
abstract::Whole-mount fluorescence in situ hybridization (FISH) was applied to Arabidopsis thaliana seedlings to determine the three-dimensional (3D) interphase chromosome territory (CT) arrangement and heterochromatin location within the positional context of entire tissues or in particular cell types of morphologically well-p...
journal_title:Genetics
pub_type: 杂志文章
doi:10.1534/genetics.107.073270
更新日期:2007-06-01 00:00:00
abstract::Two composite multiple regression-interval mapping analyses were performed to identify candidate quantitative trait loci (QTL) affecting components of wing shape in Drosophila melanogaster defined by eight relative warp-based measures. A recombinant inbred line design was used to map QTL for the shape of two intervein...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:2000-06-01 00:00:00
abstract::Bonus, a Drosophila TIF1 homolog, is a nuclear receptor cofactor required for viability, molting, and numerous morphological events. Here we establish a role for Bonus in the modulation of chromatin structure. We show that weak loss-of-function alleles of bonus have a more deleterious effect on males than on females. ...
journal_title:Genetics
pub_type: 杂志文章
doi:10.1534/genetics.104.037085
更新日期:2005-02-01 00:00:00
abstract::Sixteen inbred or partially inbred strains of rabbits were investigated for electrophoretic and quantitative variations of alpha-1-antitrypsin (A-1-AT). We found interindividual differences in the electrophoretic A-1-AT patterns as well as quantitative differences in the concentrations of A-1-AT and the serum trypsin-...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:1984-04-01 00:00:00
abstract::Strong deviation of allele frequencies from Mendelian inheritance favoring Mus spretus-derived alleles has been described previously for X-linked loci in four mouse interspecific crosses. We reanalyzed data for three of these crosses focusing on the location of the gene(s) controlling deviation on the X chromosome and...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:1996-08-01 00:00:00
abstract::Very few mutations derived from Mutator maize lines have been studied at the molecular level. The variety of Mu elements that can induce mutations, the relative frequency of mutant induction by insertion of a given class of Mu elements or by a Mu-induced genomic rearrangement, a possible intragenic insertion site spec...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:1989-06-01 00:00:00
abstract::Spt3 of Saccharomyces cerevisiae is required for the normal transcription of many genes in vivo. Past studies have shown that Spt3 is required for both mating and sporulation, two events that initiate when cells are at G(1)/START. We now show that Spt3 is needed for two other events that begin at G(1)/START, diploid f...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:2002-06-01 00:00:00
abstract::Differential expression of mRNA among animal strains is one of the mechanisms for their diversity. cDNA microarray analysis of the prostates of BUF/Nac (BUF) and ACI/N (ACI) rats, which show different susceptibility to prostate cancers, found 195 differentially expressed genes. To identify loci that control differenti...
journal_title:Genetics
pub_type: 杂志文章
doi:10.1534/genetics.104.038174
更新日期:2005-11-01 00:00:00
abstract::BTB-zinc finger transcription factors play many important roles in metazoan development. In these proteins, the BTB domain is critical for dimerization and for recruiting cofactors to target genes. Identification of these cofactors is important for understanding how BTB-zinc finger proteins influence transcription. He...
journal_title:Genetics
pub_type: 杂志文章
doi:10.1534/genetics.109.111591
更新日期:2010-04-01 00:00:00
abstract::We show that MED15, a key component of the transcription complex Mediator, lies within the nonrecombining segment of nascent sex chromosomes in the male-heterogametic Hyla arborea. Both X and Y alleles are expressed during embryonic development and differ by three frame-preserving indels (eight amino acids in total) w...
journal_title:Genetics
pub_type: 杂志文章
doi:10.1534/genetics.108.090746
更新日期:2008-07-01 00:00:00
abstract::The two cultivated rice species, Oryza sativa and Oryza glaberrima, are morphologically alike but are reproductively isolated from each other by hybrid sterility. The hybrid is male sterile but partially female fertile. Backcross experiments were conducted to introduce an alien factor controlling hybrid sterility from...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:1990-05-01 00:00:00
abstract::Using an insertional mutagenesis approach, a series of Neurospora crassa mutants affected in the ability to control entry into the conidiation developmental program were isolated. One such mutant, GTH16-T4, was found to lack normal vegetative hyphae and to undergo constitutive conidiation. The affected gene has been n...
journal_title:Genetics
pub_type: 杂志文章
doi:
更新日期:1998-05-01 00:00:00