The glycophosphatidylinositol (GPI) anchors of proteins expressed on human erythrocytes and nucleated cells differ with respect to acylation of an inositol hydroxyl group, a structural feature that modulates their cleavability by PI-specific phospholipase C (PI-PLC). To determine how this GPI anchor modification is regulated, the precursor and protein-associated GPIs in two K562 cell transfecta...

Introduction Monitoring viability of kidney before transplantation has become critical with the increasing need of marginal organs. 31P MRS is able to assess energy metabolites such as nucleotide triphosphates (NTP), inorganic phosphate (Pi) and cell phosphomonoester (PME). During cold storage, ATP decreases rapidly and is partially metabolized in PME. Therefore PME/Pi has been proposed as usef...

Phosphorus is essential for plant life and plants have developed numerous strategies to maximise phosphate (Pi) acquisition use under limited Pi supply. Here we used reciprocal grafting determine whether the shoot root different roles in regulating some of these strategies. Reciprocal grafts two grapevine genotypes (Vitis vinifera cv. Pinot noir V. berlandieri x rupestris 1103 Paulsen) were pro...

Previously, the expression of arsenite [As(III)] oxidase genes aioBA was reported to be regulated by a three-component regulatory system, AioXSR, in a number of As(III)-oxidizing bacterial strains. However, the regulation mechanism is still unknown when aioXSR genes are absent in some As(III)-oxidizing bacterial genomes, such as in Halomonas sp. HAL1. In this study, transposon mutagenesis and g...

BACKGROUND This analysis assessed the acquisition (incidence) and persistence (clearance) of human papilloma virus (HPV) infection by self-reported race among men in The HPV in Men (HIM) Study, a multinational prospective study of the natural history of genital HPV infections. METHODS Self-reported race was categorized as White, Black, Asian/Pacific Islander (PI), or multiple and mixed race. ...

During the past two decades, techniques and devices were developed to transmit and receive signals with a phased array instead of a single coil in the MRI (Magnetic Resonance Imaging) system. The two techniques to simultaneously transmit and receive RF signals using phased arrays are called parallel excitation (pTx) and parallel imaging (PI), respectively. These two techniques lead to shorter t...