Results 31 to 40 of about 34,995 (285)

A Novel Hybrid Secure Image Encryption Based on the Shuffle Algorithm and the Hidden Attractor Chaos System

open access: yesEntropy, 2020
Aiming at the problems of small key space, low security of encryption structure, and easy to crack existing image encryption algorithms combining chaotic system and DNA sequence, this paper proposes an image encryption algorithm based on a hidden ...
Xin Jin   +3 more
doaj   +1 more source

Computational and experimental analysis of DNA shuffling [PDF]

open access: yesProceedings of the National Academy of Sciences, 2003
We describe a computational model of DNA shuffling based on the thermodynamics and kinetics of this process. The model independently tracks a representative ensemble of DNA molecules and records their states at every stage of a shuffling reaction. These data can subsequently be analyzed to yield information on any relevant metric, including reassembly ...
Narendra, Maheshri, David V, Schaffer
openaire   +2 more sources

Design of an artificial phage-display library based on a new scaffold improved for average stability of the randomized proteins

open access: yesScientific Reports, 2023
Scaffold-based protein libraries are designed to be both diverse and rich in functional/folded proteins. However, introducing an extended diversity while preserving stability of the initial scaffold remains a challenge.
M. Gomes   +11 more
doaj   +1 more source

Ongoing shuffling of protein fragments diversifies core viral functions linked to interactions with bacterial hosts

open access: yesNature Communications, 2023
Biological modularity enhances evolutionary adaptability. This principle is vividly exemplified by bacterial viruses (phages), which display extensive genomic modularity. Phage genomes are composed of independent functional modules that evolve separately
Bogna J. Smug   +4 more
doaj   +1 more source

Molecular Approaches to Improve the Insecticidal Activity of Bacillus thuringiensis Cry Toxins

open access: yesToxins, 2014
Bacillus thuringiensis (Bt) is a gram-positive spore-forming soil bacterium that is distributed worldwide. Originally recognized as a pathogen of the silkworm, several strains were found on epizootic events in insect pests.
Wagner A. Lucena   +8 more
doaj   +1 more source

Analytical study of the effect of recombination on evolution via DNA shuffling

open access: yes, 2003
We investigate a multi-locus evolutionary model which is based on the DNA shuffling protocol widely applied in \textit{in vitro} directed evolution. This model incorporates selection, recombination and point mutations.
A. S. Kondrashov   +18 more
core   +1 more source

A nucleosome-free dG-dC-rich sequence element promotes constitutive transcription of the essential yeast RIO1 gene [PDF]

open access: yes, 2003
RIO1 is an essential gene that encodes a protein serine kinase and is transcribed constitutively at a very low level. Transcriptional activation of RIO1 dispenses with a canonical TATA box as well as with classical transactivators or specific DNAbinding ...
Angermayr, M.   +2 more
core   +1 more source

Functional promoter analysis using an approach based on an in vitro evolution strategy

open access: yesBioTechniques, 2005
In vitro evolution imitates the natural evolution of genes and has been very successfully applied to the modification of coding sequences, but it has not yet been applied to promoter sequences.
Tony Remans   +3 more
doaj   +1 more source

Biochemical characterization of a polyethylene terephthalate hydrolase and design of high-throughput screening for its directed evolution

open access: yesEngineering Microbiology, 2022
Polyethylene terephthalate (PET), one of the most widely used plastics in the world, causes serious environmental pollution. Recently, researchers have focused their efforts on enzymatic degradation of PET, which is an attractive way of degrading and ...
Xiaotong Wang   +5 more
doaj   +1 more source

Microarray-Based Method for Combinatorial Library Sequence Mapping and Characterization

open access: yesBioTechniques, 2003
Here we describe a DNA-chip-based method for high-throughput sequence mapping. This involves competitive hybridization between short and differentially labeled fluorescent oligonucleotide probes and glass-supported PCR products.
V. Abécassis   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy