Results 91 to 100 of about 895,436 (365)

The Caenorhabditis elegans DPF‐3 and human DPP4 have tripeptidyl peptidase activity

FEBS Letters, EarlyView.
The dipeptidyl peptidase IV (DPPIV) family comprises serine proteases classically defined by their ability to remove dipeptides from the N‐termini of substrates, a feature that gave the family its name. Here, we report the discovery of a previously unrecognized tripeptidyl peptidase activity in DPPIV family members from two different species.
Aditya Trivedi, Rajani Kanth Gudipati
wiley   +1 more source

Perspectives on Intracluster Enrichment and the Stellar Initial Mass Function in Elliptical Galaxies [PDF]

, 2013
Stars formed in galaxy cluster potential wells must be responsible for the high level of enrichment measured in the intracluster medium (ICM); however, there is increasing tension between this truism and the parsimonious assumption that the stars in the ...
Loewenstein, Michael
core   +3 more sources

The role and implications of mammalian cellular circadian entrainment

FEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

Determining Stellar Elemental Abundances from DESI Spectra with the Data-driven Payne

The Astrophysical Journal Supplement Series
Stellar abundances for a large number of stars provide key information for the study of Galactic formation history. Large spectroscopic surveys such as the Dark Energy Spectroscopic Instrument (DESI) and LAMOST take median-to-low-resolution ( R ≲ 5000 ...
Meng Zhang, Maosheng Xiang, Yuan-Sen Ting, Jiahui Wang, Haining Li, Hu Zou, Jundan Nie, Lanya Mou, Tianmin Wu, Yaqian Wu, Jifeng Liu   +10 more
doaj   +1 more source

A Pan-Spectral Method of Abundance Determination

, 2007
We propose a new method for determination of element abundances in stellar atmospheres aimed for the automatic processing of high-quality stellar spectra.
Aret, A., Poolamäe, R., Sapar, A., Sapar, L.   +3 more
core   +1 more source

The normal chemistry of multiple stellar populations in the dense globular cluster NGC 6093 (M 80) [PDF]

, 2015
We present the abundance analysis of 82 red giant branch stars in the dense, metal-poor globular cluster NGC 6093 (M 80), the largest sample of stars analyzed in this way for this cluster.
Bragaglia, A., Carretta, E., Catanzaro, G., D'Orazi, V., Gratton, R. G., Leone, F., Lucatello, S., Momany, Y., Sollima, A.   +8 more
core   +2 more sources

Stellar Abundances for the Galactic Archeology (SAGA) Database — Compilation of the Characteristics of Known Extremely Metal-Poor Stars [PDF]

, 2008
We describe the construction of a database of extremely metal-poor (EMP) stars in the Galaxy. Our database contains detailed elemental abundances, reported equivalent widths, atmospheric parameters, photometry, and binarity status, compiled from papers ...
T. Suda, Y. Katsuta, S. Yamada, T. Suwa, C. Ishizuka, Y. Komiya, K. Sorai, M. Aikawa, Masayuki Y. Fujimoto Hokkaido Univ., T. Univ., T. Univ.   +10 more
semanticscholar   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Quantifying the uncertainties of chemical evolution studies. II. Stellar yields [PDF]

, 2010
This is the second paper of a series which aims at quantifying the uncertainties in chemical evolution model predictions related to the underlying model assumptions.
A. I. Karakas, Akerman, Andrievsky, Andrievsky, Andrievsky, Andrievsky, Andrievsky, Andrievsky, Andrievsky, Arnett, Asplund, Asplund, Bahcall, Baumüller, Baumüller, Bensby, Bensby, Bensby, Bergemann, Bergemann, Bihain, Bonifacio, Boothroyd, Caffau, Carigi, Carigi, Casagrande, Cayrel, Cescutti, Cescutti, Chiappini, Chiappini, Chiappini, Chiappini, Chieffi, Chiosi, D. Romano, de Jager, Decressin, Dray, Dray, Edmunds, Edvardsson, Ekström, F. Matteucci, Fabbian, Feltzing, François, Fröhlich, Gehren, Giovagnoli, Girardi, Goswami, Gratton, Grevesse, Groenewegen, Hauschildt, Henry, Hirschi, Hirschi, Hoffmeister, Honda, Iben, Israelian, Ivanova, Iwamoto, Iwamoto, Izzard, Karakas, Karakas, Karakas, Karakas, Kobayashi, Kovtyukh, Kroupa, Kudritzki, Lai, Limongi, Luck, Luck, M. Tosi, Maeder, Marcolini, Marigo, Marigo, Mashonkina, Matteucci, Matteucci, Matteucci, Matteucci, McWilliam, Meynet, Meynet, Mishenina, Nakamura, Nissen, Nissen, Nissen, Nomoto, Ohkubo, Portinari, Pumo, Ramírez, Reddy, Reddy, Reimers, Renzini, Romano, Romano, Romano, Romano, Russell, Scalo, Schaller, Shi, Shi, Siess, Spite, Straniero, Takeda, Timmes, Tinsley, Tinsley, Tosi, Umeda, Umeda, van den Hoek, Vassiliadis, Ventura, Ventura, Wallerstein, Woosley, Yoshida, Zhang   +133 more
core   +1 more source

Crosstalk between the ribosome quality control‐associated E3 ubiquitin ligases LTN1 and RNF10

FEBS Letters, EarlyView.
Loss of the E3 ligase LTN1, the ubiquitin‐like modifier UFM1, or the deubiquitinating enzyme UFSP2 disrupts endoplasmic reticulum–ribosome quality control (ER‐RQC), a pathway that removes stalled ribosomes and faulty proteins. This disruption may trigger a compensatory response to ER‐RQC defects, including increased expression of the E3 ligase RNF10 ...
Yuxi Huang, Satoshi Hashimoto, Sota Ito, Chisato Kikuguchi, Miho Hoshi, Kiyoshi Yamaguchi, Yoichi Furukawa, Toru Suzuki, Toshifumi Inada   +8 more
wiley   +1 more source