Results 61 to 70 of about 814 (162)

THE PROTOPLANETARY DISK AROUND THE M4 STAR RECX 5: WITNESSING THE INFLUENCE OF PLANET FORMATION?

The Astrophysical Journal, 2010
We present Spitzer Space Telescope low-resolution spectroscopy of the protoplanetary disk around the M4 star RECX 5, a low-mass member of the approximate to 8 Myr old eta Chamaeleontis star cluster. Two features of the disk around RECX 5 set it apart from other young, low-mass stars with protoplanetary disks: its mineralogy and its disk geometry.
Bouwman, J., Lawson, W.A., Juhász, A., Dominik, C., Feigelson, E.D., Henning, T., Tielens, A.G.G.M., Waters, L.B.F.M.   +7 more
openaire   +3 more sources

Transcriptional and Mutational Analyses of theStreptomyces lividans recXGene and Its Interference with RecA Activity [PDF]

Journal of Bacteriology, 2000
ABSTRACTThe role of the 20,922-Da RecX protein and its interference with RecA activity were analyzed inStreptomyces lividans. TherecXgene is located 220 bp downstream ofrecA. Transcriptional analysis by reverse transcriptase PCR demonstrated thatrecXandrecAconstitute an operon. WhilerecAwas transcribed at a basal level even under noninducing conditions,
S, Vierling, T, Weber, W, Wohlleben, G, Muth   +3 more
openaire   +2 more sources

Une lecture des élections présidentielles au prisme de la pensée complexe : du déni de complexité à la crise démocratique. [PDF]

, 2022
Éditorial de la Lettre de Reliance en Complexité ...
Roggero, Pascal
core  

B. subtilis RecX-YFP has a similar subcellular position to CFP-RecA threads and does not co-localize with sites of DSBs.

, 2012
(A) RecX-YFP, CFP-RecA and overlay in exponentially growing cells. (B–D) Cells at 60 (B), 120 min (C) and 180 min (D) after addition of 0.15 µM MMC. Shown is the corresponding RecX-YFP or CFP-RecA fluorescence, and an overlay of both signals (RecX in red,
Miriam Kaufenstein (109025), Begoña Carrasco (109021), Peter L. Graumann (109027), Katharina Herr (109024), Paula P. Cárdenas (109020), Clarisse Defeu Soufo (109022), Carolina E. César (109023), Juan C. Alonso (9137)   +7 more
core   +1 more source

Investigations of Ultraviolet Spectral Approximations for Computing Photodissociation and Photoionization Reaction Rates

The Astronomical Journal
The chemical composition of protoplanetary disks, especially in the molecular layer and above, is set by photoprocesses driven by stellar radiation fields.
Jamila Pegues, L. Ilsedore Cleeves, Karin Öberg, Edwin A. Bergin, Ewine F. van Dishoeck, Valentine Wakelam   +5 more
doaj   +1 more source

Effect of RecX protein expression on measured FRE levels in strains expressing RecA or RecA D112R proteins.

, 2016
The strain used is JC10289 (AB1157 ΔrecA) engineered with a deletion of the araBAD operon as described in Materials and Methods. Plasmids were constructed to express both the indicated RecA (from the tac promoter, uninduced) and the indicated RecX (from ...
Michael M. Cox (64), Dmitry M. Baitin (2636086), Elizabeth A. Wood (750597), Irina V. Bakhlanova (2636080), Alexandra V. Dudkina (2636083), Vladislav A. Lanzov (2636077)   +5 more
core   +1 more source

Bacillus subtilis RarA Acts as a Positive RecA Accessory Protein [PDF]

, 2020
Ubiquitous RarA AAA+ ATPases play crucial roles in the cellular response to blocked replication forks in pro- and eukaryotes. Here, we provide evidence that RarA regulates the activity of the central player in homologous recombination (HR), RecA, in ...
Cárdenas Mastrascusa, Paula Patricia, Serrano, Ester, Graumann, Peter L., Romero, Héctor, Carrasco, Begoña, Ayora, Silvia, Hernández-Tamayo, Rogelio, Cárdenas, Paula P., Alonso, Juan C.   +8 more
core   +1 more source

The effect of RecX proteins on ATPase activity of RecA variant proteins.

, 2015
(A) Effects of EcRecX protein. Reactions contained 3 μM RecA variant, 5 μM M13mp18 ssDNA, 0.5 μM SSB, and 3 mM ATP. The ATP hydrolysis by RecA protein was initiated by the addition of ATP and SSB protein. After 7 min, 100 nM of RecX protein was added and
Sindhu Chitteni-Pattu (750595), Michael M. Cox (64), Benjamin L. Cox (750596), Elizabeth A. Wood (750597), Taejin Kim (472963), Steven J. Sandler (172368)   +5 more
core   +1 more source

Fluorescence microscopy of B. subtilis rec⁺ and ΔrecX cells expressing CFP-RecA.

, 2012
(A) CFP-RecA in exponentially growing cells. (B–E) Cells at 90 (B), 120 (C), 180 (D) and 210 min (E) after induction of DSBs by 0.15 µM MMC. CFP-RecA threads are visible on the nucleoid (some cells whose outline is unclear are denoted by a dotted line ...
Miriam Kaufenstein (109025), Begoña Carrasco (109021), Peter L. Graumann (109027), Katharina Herr (109024), Paula P. Cárdenas (109020), Clarisse Defeu Soufo (109022), Carolina E. César (109023), Juan C. Alonso (9137)   +7 more
core   +1 more source

Recombination proteins differently control the acquisition of homeologous DNA during Bacillus subtilis natural chromosomal transformation.

, 2021
Natural chromosomal transformation (CT) plays a major role in prokaryote evolution, yet factors that govern the integration of DNA from related species remain poorly understood.
Ester Serrano, Silvia Ayora, Cristina Ramos, Serrano, Ester, Alonso, Juan C, Juan C. Alonso, Ayora, Silvia, Ramos, Cristina, Alonso, Juan C.   +8 more
core   +1 more source