Results 81 to 90 of about 11,985 (259)

Perfect Codes over Non-Prime Power Alphabets: An Approach Based on Diophantine Equations

open access: yesMathematics
Perfect error-correcting codes allow for an optimal transmission of information while guaranteeing error correction. For this reason, proving their existence has been a classical problem in both pure mathematics and information theory.
Pedro-José Cazorla García
doaj   +1 more source

Evolution‐guided yeast complementation reveals functional differences in human PSPH variants

open access: yesFEBS Open Bio, EarlyView.
Ancient genomes can help guide which human genetic variants are tested experimentally. This study applies that idea to PSPH, a gene involved in serine biosynthesis, and uses high‐throughput yeast complementation to compare variant function. The findings reveal measurable differences among selected alleles and illustrate the value of evolution‐guided ...
Mauricio Campa‐Álvarez   +6 more
wiley   +1 more source

Error correcting codes and heterotic Narain CFTs

open access: yesJournal of High Energy Physics
We study error correcting codes that construct the Narain lattices of heterotic strings as code lattices. We identify, in both E 8 × E 8 and Spin(32)/ℤ2 heterotic strings, a pair of a binary code and a set of the corresponding metric, B field, and ...
Shun’ya Mizoguchi, Takumi Oikawa
doaj   +1 more source

Structural studies and functional engineering of NanX: an anhydro‐sialic acid transporter from Escherichia coli

open access: yesFEBS Open Bio, EarlyView.
Biophysical characterisation shows that NanX, a membrane transport protein from the major facilitator superfamily (MFS), forms both monomers and dimers after purification. AlphaFold modelling and substrate docking provide information on residues likely involved in substrate recognition for NanX and another MFS member, NanT.
Michael C. Newton‐Vesty   +13 more
wiley   +1 more source

Purification and preparation of Marchantia polymorpha Auxin Response Factor 2 for phase separation studies

open access: yesFEBS Open Bio, EarlyView.
We describe detailed protocols for the purification and preparation of Marchantia polymorpha Auxin Response Factor 2 (MpARF2). This protein is fused to an MBP solubility tag and an mNG fluorescent tag and is purified from Escherichia coli. The presented procedures make it possible to study MpARF2 assemblies, which could arise from phase separation ...
Bas Janssen   +5 more
wiley   +1 more source

Efficiently stable presentations from error-correcting codes

open access: yesDiscrete Analysis
This paper brings together a wide variety of interesting concepts, in order to rederive a result that formed a key step in the proof of the famous result that MIP${\mathstrut}^*$=RE by Zhengfeng Ji, Anand Natarajan, Thomas Vidick, John Wright, and Henry ...
Michael Chapman   +2 more
doaj   +1 more source

Heterotropic regulation and negative homotropic cooperativity

open access: yesFEBS Open Bio, EarlyView.
We identified a structural module common to some proteins that couple negative cooperativity with heterotropic regulation, two features that rarely coexist. These proteins are ring‐like and present an ordered asymmetry whereby noncontacting subunits are symmetric, and their tertiary structure differs from that of contacting subunits.
Veronica Morea   +5 more
wiley   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

open access: yesFEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey   +4 more
wiley   +1 more source

Software Approaches and Methods to Ensure the Security of Interactive Systems

open access: yesCybernetics and Information Technologies, 2018
In the paper are studied methods for protection of interactive systems and digital archives against unauthorized distribution of digital content. We make an overview of steganographic methods and image protection schemes.
Bogdanova Galina   +2 more
doaj   +1 more source

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