Induction of outer membrane protein H1 in Pseudomonas aeruginosa results in decreased susceptibility to aminoglycosides, polymyxin B, and EDTA. We have previously shown that protein H1 can become the major cellular protein in cells grown in low (0.02 mM) Mg2+. The induction of protein H1 was prevented by supplementation of low Mg2+ medium with Mg2+, Ca2+, Mn2+, or Sr2+ (each at 0.5 mM), but not...

The effect of divalent cations on cation fluxes across the chloroplast envelope and on photo­ synthetic reactions of intact spinach chloroplasts was investigated. In the absence of EDTA, divalent cations inhibited photosynthetic C02-fixation and PGAreduction at low PGA concentrations, but had almost no effect on the reduction of OAA, BQ, and on PGA-reduction at high PGA concentrations. The inhi...

This work aims to investigate the hydrochemical characteristics and formation mechanisms of shallow groundwater in a part Nanchang section Ganfu plain. The data from 90 samples were interpreted by methods mathematical statistics, Piper diagrams, Gibbs plots, ratio graphs ions, geochemical modeling. results show that is weakly acidic, average concentration cation decrease Ca2+ > Na+ Mg2+ K+, ...

Métodos hidrogeoquímicos e isotópicos fueron utilizados para caracterizar la calidad del agua subterránea (N=19) pertenecientes al acuífero aluvial de cuenca Rio Pavas en Colombia, evaluar su origen, renovabilidad y dinámica espacial temporal. El transita dirección Sureste-Noroeste, con características fresca (SDT < 500 mg/L; 5,55 ≤ pH 7,90), no recomendada consumo humano superar los valores...

The present study describes the hydrochemistry of ground waters found in Mesta River Basin, located south-western part Bulgaria. groundwater’s composition can be expressed as follows: Ca2+ > Na+ Mg2+ K+; K+ equivalent units for cations, and HCO3– SO42– Cl– anions. chemical studied groundwater described calcium-bicarbonate. calcium ions make up from 17.90% to 38.62% (30.18% on average), bicar...

The processed discharges from Tangier Automotive City’s (TAC) Chrafate Wastewater Treatment Plant (WWTP) contaminate the Jouamaa Hakama groundwater and Ouljat Echatt river. We aimed to study unknown interactions between surface water (SW) (GW). A total of nine GW samples eleven SW were taken analyzed in 2021 2022 determine 16 physical chemical parameters (pH, temperature (T), electrical conduct...

HutP is an RNA-binding protein that regulates the expression of the histidine utilization (hut) operon in Bacillus subtilis, by binding to cis-acting regulatory sequences on hut mRNA. It requires L-histidine and an Mg2+ ion for binding to the specific sequence within the hut mRNA. In the present study, we show that several divalent cations can mediate the HutP-RNA interactions. The best divalen...

The effects of various doses of dietary intake of Garcinia kola seed powder [incorporated in animal feed at levels of 5% w/w, 10% w/w and 20% w/w and fed daily for six weeks] on serum levels of selected electrolytes [K+, Na+, CI-, HCO3-, Mg2+ and Ca2+] and trace metals [Cu2+, Zn2+ and Mn2+] were studied in male Albino rats [100-150 g body wt]. The pair-fed controls received basal feed diet dail...

The present investigation provides data on physico-chemical parameters, some major ions and nutrients on water samples of Tinishu Akaki River (TAR), Ethiopia. The pH, temperature, electrical conductivity, total dissolved solids (TDS), dissolved oxygen (DO), chemical oxygen demand (COD), biological oxygen demand (BOD), Ca2+, Mg2+, HCO3-, SO42-, NO3-, NO2-, PO43-, Cland NH3 have been determined t...