Results 91 to 100 of about 7,637,178 (292)

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Spectrum and resolvent of multi-channel systems with internal energies and common boundary conditions

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
In the article the spectrum and resolvent of the so-called multichannel systems with nonzero internal energies were investigated. The spectrum and resolvent of multichannel Sturm-Liouville systems with non-zero internal energies mi2 and general boundary
A.A. Valiyev   +2 more
doaj   +1 more source

‘Guide and Prejudice’— How Argonautes recognize targets across domains of life

open access: yesFEBS Letters, EarlyView.
Argonaute proteins use short nucleic‐acid guides to locate and regulate specific targets across all domains of life. Despite striking diversity—from human gene silencing to bacterial immune defence—all Argonautes share a conserved three‐stage recognition logic: guide‐directed sampling, progressive target pairing with a conformational checkpoint and ...
Jack P. K. Bravo
wiley   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

Finiteness Conditions for Clifford Semigroups [PDF]

open access: yes, 2013
There is a large amount of published work in the last decade on finiteness conditionsof monoids and groups such as n FP and its siblings. Recently Gray and Pride havefound that a Clifford monoid containing a minimal idempotent e is of type n FP ifand ...
Anjeza Pasku (Krakulli); Department of Mathematics, University of "Aleksander Moisiu"   +1 more
core  

Finiteness conditions for matrix semigroups

open access: yes, 1973
Classical theorems of Schur and Burnside on finiteness of matrix groups are generalized to regular and inverse matrix semigroups.
Yechezkel Zalcstein
core   +1 more source

Ring extensions with some finiteness conditions on the set of intermediate rings [PDF]

open access: yes, 2010
summary:A ring extension $R\subseteq S$ is said to be FO if it has only finitely many intermediate rings. $R\subseteq S$ is said to be FC if each chain of distinct intermediate rings in this extension is finite.
Jaballah, Ali   +3 more
core   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

An impulsive problem for quadratic pencil of Schrödinger operators on semi-axis

open access: yesJournal of Inequalities and Applications
The present article examines a quadratic pencil of Schrödinger operator given with an impulsive condition. The novelty of this study lies in its focus on the half-line and inclusion of an arbitrary single discontinuity point, distinguishing it from ...
Serifenur Cebesoy
doaj   +1 more source

Forcing □ω1 with finite conditions

open access: yesAnnals of Pure and Applied Logic, 2013
AbstractWe give a construction of the square principle □ω1 by means of forcing with finite conditions.
Gregor Dolinar, Mirna Dzamonja
openaire   +2 more sources

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