Results 171 to 180 of about 13,563,242 (300)

On Multiple Integral Relations Involving Generalized Mellin-Barnes Type of Contour Integral

, 2012
[[abstract]]In this paper, we first evaluate two finite basic integrals involving the product of the multivariable polynomial S(superscript h1,…,hr subscript L) [x1,…, xr] and two generalized Mellin Barnes type of contour integrals.
Praveen Agarwal
core  

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

FEBS 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

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Effect of Sex, Anesthesia Method, Physiological Asymmetry, and Strain on Rat Lymphatic Vessel Contractility Assessed via Near-Infrared Spectroscopy and Linear Mixed-Effects Modeling. [PDF]

Microcirculation
Mavris S, Chin R, Hsu SY, Gleason RL, Dixon JB, Nepiyushchikh Z.   +5 more
europepmc   +1 more source

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

FEBS 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, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Polyphenols as Multi-Target Regulators of Oxidative Stress, Mitochondrial Function, and Cell Survival Signaling in Skin Diseases. [PDF]

Int J Mol Sci
Cho MK, Choi MH, Kim KD, Park SQ, Lee SH, Nam HS, Lee YJ.   +6 more
europepmc   +1 more source

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

FEBS 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

Individual Influence in Population Pharmacokinetics Depends on Underlying Mechanism: Evidence from a Jackknife ΔOFV Approach. [PDF]

Pharmaceutics
Simon N, von Fabeck K.
europepmc   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Microbial epigenetic regulation as a multilevel regulatory interface in host-microbe interactions. [PDF]

Gut Microbes
Yizengaw Adnie L, Wang GH.
europepmc   +1 more source