Results 41 to 50 of about 142,425 (303)

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Spatial Chromosome Organization and Adaptation of Escherichia coli under Heat Stress

Microorganisms
The spatial organization of bacterial chromosomes is crucial for cellular functions. It remains unclear how bacterial chromosomes adapt to high-temperature stress.
Xu-Ting Wang, Bin-Guang Ma
doaj   +1 more source

The B chromosomes of the African cichlid fish Haplochromis obliquidens harbour 18S rRNA gene copies

BMC Genetics, 2010
Background Diverse plant and animal species have B chromosomes, also known as accessory, extra or supernumerary chromosomes. Despite being widely distributed among different taxa, the genomic nature and genetic behavior of B chromosomes are still poorly ...
Martins Cesar, Ferreira Irani A, Poletto Andréia B   +2 more
doaj   +1 more source

Bacterial Chromosome Organization and Segregation [PDF]

Cold Spring Harbor Perspectives in Biology, 2010
Bacterial chromosomes are generally approximately 1000 times longer than the cells in which they reside, and concurrent replication, segregation, and transcription/translation of this crowded mass of DNA poses a challenging organizational problem. Recent advances in cell-imaging technology with subdiffraction resolution have revealed that the bacterial
Esteban, Toro, Lucy, Shapiro
openaire   +2 more sources

\u3cem\u3eAnolis\u3c/em\u3e Sex Chromosomes Are Derived from A Single Ancestral Pair [PDF]

, 2014
To explain the frequency and distribution of heteromorphic sex chromosomes in the lizard genus Anolis, we compared the relative roles of sex chromosome conservation versus turnover of sex‐determining mechanisms. We used model‐based comparative methods to
Gamble, Tony, Geneva, Anthony J., Glor, Richard E., Zarkower, David   +3 more
core   +1 more source

Molecular cytogenetic mapping of Cucumis sativus and C. melo using highly repetitive DNA sequences [PDF]

, 2010
Chromosomes often serve as one of the most important molecular aspects of studying the evolution of species. Indeed, most of the crucial mutations that led to differentiation of species during the evolution have occurred at the chromosomal level ...
Bang, J.W., Choi, D., Hur, Y., Jong, J.H.S.G.M., de, Koo, D.H., Nam, Y.W.   +5 more
core   +3 more sources

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Cytogenetic maps of homoeologous chromosomes A h01 and D h01 and their integration with the genome assembly in Gossypium hirsutum

Comparative Cytogenetics, 2017
Cytogenetic maps of Gossypium hirsutum (Linnaeus, 1753) homoeologous chromosomes Ah01 and Dh01 were constructed by fluorescence in situ hybridization (FISH), using eleven homoeologous-chromosomes-shared bacterial artificial chromosomes (BACs) clones and ...
Yuling Liu, Zhen Liu, Renhai Peng, Yuhong Wang, Zhongli Zhou, Xiaoyan Cai, Xingxing Wang, Zhenmei Zhang, Kunbo Wang, Fang Liu   +9 more
doaj   +3 more sources

Biological Functions of Type II Toxin-Antitoxin Systems in Bacteria

Microorganisms, 2021
After the first discovery in the 1980s in F-plasmids as a plasmid maintenance system, a myriad of toxin-antitoxin (TA) systems has been identified in bacterial chromosomes and mobile genetic elements (MGEs), including plasmids and bacteriophages.
Muhammad Kamruzzaman, Alma Y. Wu, Jonathan R. Iredell   +2 more
doaj   +1 more source

Synteny analysis in Rosids with a walnut physical map reveals slow genome evolution in long-lived woody perennials. [PDF]

, 2015
BackgroundMutations often accompany DNA replication. Since there may be fewer cell cycles per year in the germlines of long-lived than short-lived angiosperms, the genomes of long-lived angiosperms may be diverging more slowly than those of short-lived ...
Aradhya, Mallikarjuna, Dandekar, Abhaya M, Dvorak, Jan, Leslie, Charles A, Li, Pingchuan, Luo, Ming-Cheng, McGuire, Patrick E, Wang, Ji-Rui, You, Frank M, Zhu, Tingting   +9 more
core   +2 more sources