Incorporation of dihydroretinals into the sensory rhodopsin SR and bacteriorhodopsin bR has led to a modified version of the external point-charge model for bR proposed in 1979. Difference Fourier transform infrared studies of native bR and bR analogs cultured on media containing isotopes of amino acids have shown some of the amino acids which undergo environmental changes or deprotonation/prot...

The title compound, C(8)H(12)NO(+)·Br(-), is built up from roughly planar (r.m.s. deviation for the non-H atoms = 0.062 Å) protonated 4-eth-oxy-anilimium cations and Br(-) anions. In the crystal, the cations and anions are linked by N-H⋯Br and N-H⋯(Br,Br) hydrogen bonds, generating (100) sheets. Very weak C-H⋯π inter-actions may also help to stabilize the crystal structure.

Brassinosteroid (BR) homeostasis and signaling are crucial for normal growth and development of plants. BR signaling through cell-surface receptor kinases and intracellular components leads to dephosphorylation and accumulation of the nuclear protein BZR1. How BR signaling regulates gene expression, however, remains unknown. Here we show that BZR1 is a transcriptional repressor that has a previ...

Let k be a field finitely generated over the field of rational numbers, and Br (k) the Brauer group of k. For an algebraic variety X over k we consider the cohomological Brauer–Grothendieck group Br (X). We prove that the quotient of Br (X) by the image of Br (k) is finite if X is a K3 surface. When X is an abelian variety over k, and X is the variety over an algebraic closure k of k obtained f...

In the title compound, [PdBr(2)(C(21)H(21)As)(2)], the Pd(II) ion, residing on a centre of symmetry, is coordinated by two As donor atoms [Pd-As = 2.4276 (2) Å] and two Br anions [Pd-Br = 2.4194 (2) Å] in a distorted square-planar geometry [Br-Pd-As = 87.786 (7)°]. A weak intra-molecular C-H⋯Br inter-action occurs. In the crystal structure, inter-molecular C-H⋯Br inter-actions are observed.

The title compound, C(7)H(10)NO(+)·Br(-), consists of almost planar 4-methoxy-anilinium cations, wherein the O atom lies 0.049 (3) Å out of the plane formed by the non-H atoms, and a Br(-) anion. Strong N-H⋯Br and N-H⋯(Br,Br) hydrogen bonding contributes to the stability of the crystal structure and links the cations and anions into a three-dimensional network.

BACKGROUND The aim of the present study was to evaluate potential psychosocial factors that impact Chinese female breast cancer patients to select breast reconstruction (BR), and potential connection of psychosocial outcomes with their satisfaction with BR. METHODS A total of 264 female breast cancer patients with mastectomy were recruited from 2012 to 2014. All patients were informed with BR...

Phytohormones have essential roles in coordinately regulating a large array of developmental processes. Studies have revealed that brassinosteroids (BRs) and abscisic acid (ABA) interact to regulate hundreds of expression in genes, governing many biological processes. However, whether their interaction is through modification or intersection of their primary signaling cascades, or by independen...

bacteriorhodopsin (br) is the light harvesting and photoactive proton pump found in the membrane of a salt marsh bacteria. this protein has significant potential to use in optical computing and memory devices due to unique intrinsic physical properties of photo and bioelectric. all these features make br one of the most promising protein candidates in protein memories. protein memory is a kind ...

Iron (Fe) is essential but harmful for plants at toxic level. However, how wheat plants tolerate excess Fe remains vague. This study aims at elucidating the mechanisms underlying tolerance to excess Fe in wheat. Higher Fe concentration caused morpho-physiological retardation in BR 26 (sensitive) but not in BR 27 (tolerant). Phytosiderophore and 2-deoxymugineic acid showed no changes in BR 27 bu...