Results 131 to 140 of about 6,137,241 (375)

Multipopulation aftereffects on the color-magnitude diagram and Cepheid variables of young stellar systems

open access: yes, 2013
Context: The evidence of a multipopulation scenario in Galactic globular clusters raises several questions about the formation and evolution of the two (or more) generations of stars.
Brocato, E.   +3 more
core   +1 more source

The carboxylate “gripper” of the substrate is critical for C‐4 stereo‐inversion by UDP‐glucuronic acid 4‐epimerase

open access: yesFEBS Letters, EarlyView.
UDP‐glucuronic acid 4‐epimerase (UGAepi) catalyzes NAD+‐dependent interconversion of UDP‐glucuronic acid (UDP‐GlcA) and UDP‐galacturonic acid (UDP‐GalA) via C4‐oxidation, 4‐keto‐intermediate rotation, and C4‐reduction. Here, Borg et al. examined the role of the substrate's carboxylate group in the enzymic mechanism by analyzing NADH‐dependent reduction
Annika J. E. Borg   +2 more
wiley   +1 more source

Speckle observations of double and multiple stars at Pic du Midi: Measurements during 1995 and 1997 and new orbits ?;??;???

open access: yes, 1999
We present speckle observations of 48 double and multiple stars observed with the 2-meter \T elescope Bernard Lyot" (TBL) in December 1995, January 1997 and June 1997.
E. Aristidi   +9 more
semanticscholar   +1 more source

Spiral arm crossings inferred from ridges in Gaia stellar velocity distributions

open access: yes, 2018
The solar neighborhood contains disc stars that have recently crossed spiral arms in the Galaxy. We propose that boundaries in local velocity distributions separate stars that have recently crossed or been perturbed by a particular arm from those that ...
Anders, Friedrich   +9 more
core   +1 more source

Evolutionary interplay between viruses and R‐loops

open access: yesFEBS Letters, EarlyView.
Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi   +4 more
wiley   +1 more source

Disruption of SETD3‐mediated histidine‐73 methylation by the BWCFF‐associated β‐actin G74S mutation

open access: yesFEBS Letters, EarlyView.
The β‐actin G74S mutation causes altered interaction of actin with SETD3, reducing histidine‐73 methylation efficiency and forming two distinct actin variants. The variable ratio of these variants across cell types and developmental stages contributes to tissue‐specific phenotypical changes. This imbalance may impair actin dynamics and mechanosensitive
Anja Marquardt   +8 more
wiley   +1 more source

Editorial: The Effect of Stellar Multiplicity on Exoplanetary Systems

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Steve B. Howell   +2 more
doaj   +1 more source

Purification tags markedly affect self‐aggregation of CPEB3

open access: yesFEBS Letters, EarlyView.
Although recombinant proteins are used to study protein aggregation in vitro, uncleaved tags can interfere with accurate interpretation. Our findings demonstrate that His₆‐GFP and His₁₂ tags significantly affect liquid droplet and amyloid fibril formation in the intrinsically disordered region (IDR) of mouse cytoplasmic polyadenylation element‐binding ...
Harunobu Saito   +6 more
wiley   +1 more source

Towards multiple-star population synthesis [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2009
The multiplicities of stars, and some other properties, were collected recently by Eggleton & Tokovinin, for the set of 4559 stars with Hipparcos magnitude brighter than 6.0 (4558 excluding the Sun). In this paper I give a numerical recipe for constructing, by a Monte Carlo technique, a theoretical ensemble of multiple stars that resembles the ...
openaire   +3 more sources

Probing the distinct chemical history of the Milky Way halo and old thick disk through HESP-GOMPA survey [PDF]

open access: yesEPJ Web of Conferences
Recent studies of the time-resolved Milky Way formation using asteroseismology have shown that thick disk stars could be very old (0.8 Gyr after the Big Bang, even older than the inner halo).
Saraf Pallavi   +2 more
doaj   +1 more source

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