Results 21 to 30 of about 435,238 (305)

pH Dependence on Colorimetric Detection of Hg²⁺ by Histidine-Functionalized Gold Nanoparticles

Indonesian Journal of Chemistry, 2020
In this study, we successfully developed gold nanoparticles capped with histidine (His-AuNPs) for Hg2+ detection using trisodium citrate as the reducing agent. The optimum pH for the detection of Hg2+ by His-AuNPs was 12.
Dewi Eviane, Dwi Siswanta, Sri Juari Santosa   +2 more
doaj   +1 more source

Structural Insights into the HWE Histidine Kinase Family: The Brucella Blue Light-Activated Histidine Kinase Domain [PDF]

, 2016
In response to light, as part of a two-component system, the Brucella blue light-activated histidine kinase (LOV-HK) increases its autophosphorylation, modulating the virulence of this microorganism.
Arrar, Mehrnoosh, Berguer, Paula Mercedes, Cerutti, Maria Laura, Estrin, Dario Ariel, Goldbaum, Fernando Alberto, Klinke, Sebastian, Marti, Marcelo Adrian, Paris, Gastón, Rinaldi, Jimena Julieta, Sycz, Gabriela   +9 more
core   +1 more source

Structural and chemical requirements for histidine phosphorylation by the chemotaxis kinase CheA [PDF]

, 2005
The CheA histidine kinase initiates the signal transduction pathway of bacterial chemotaxis by autophosphorylating a conserved histidine on its phosphotransferase domain (P1).
Bilwes, Alexandrine M., Crane, Brian R., Dahlquist, Frederick W., Gradinaru, Cristian, Hamel, Damon J., Quezada, Cindy M., Simon, Melvin I.   +6 more
core   +1 more source

Surface immobilization of hexa-histidine-tagged adeno-associated viral vectors for localized gene delivery. [PDF]

, 2010
Adeno-associated viral (AAV) vectors, which are undergoing broad exploration in clinical trials, have significant promise for therapeutic gene delivery because of their safety and delivery efficiency.
Bethi, SR, Gujraty, K, Jang, J-H, Kane, RS, Koerber, JT, Schaffer, DV   +5 more
core   +5 more sources

pH-Dependent Mechanisms of Influenza Infection Mediated by Hemagglutinin

Frontiers in Molecular Biosciences, 2021
Influenza hemagglutinin (HA) is a viral membrane bound protein that plays a critical role in the viral life cycle by mediating entry into target cells. HA exploits the lowering of the pH in the endosomal compartment to initiate a series of conformational
Michael Caffrey, Arnon Lavie
doaj   +1 more source

Histidine nutrition and genotype affect cataract development in Atlantic salmon, Salmo salar L. [PDF]

, 2005
The aim of this study was to investigate effects of dietary levels of histidine (His) and iron (Fe) on cataract development in two strains of Atlantic salmon monitored through parr-smolt transformation.
Bjerkas, E, Breck, O, Campbell, P, Rhodes, J D, Sanderson, J, Waagbo, R   +5 more
core   +1 more source

Inhibition of Fructose-1,6-bisphosphatase by Aminoimidazole Carboxamide Ribotide Prevents Growth of Salmonella enterica purH Mutants on Glycerol [PDF]

, 2006
The enzyme fructose-1,6-bisphosphatase (FBP) is key regulatory point in gluconeogenesis. Mutants of Salmonella enterica lacking purH accumulate 5-amino-4-imidazole carboxamide ribotide (AICAR) and are unable to utilize glycerol as sole carbon and energy ...
Boyd, Jeffrey M., Dougherty, Michael J., Downs, Diana M.   +2 more
core   +1 more source

Titration of Dietary Histidine during a 22- to 42-Day Feeding Phase following a 0- to 21-Day Feeding Phase with Variable Dietary Histidine Concentrations in Female Cobb 500 Broilers

Poultry
Further reductions of crude protein in broiler diets may cause essential amino acids traditionally considered to be supplied at adequate levels to become limiting.
Kenneth B. Nelson, Matheus F. Costa, Savannah C. Wells-Crafton, Shivaram K. Rao, Garrett J. Mullenix, Craig W. Maynard, Michael T. Kidd   +6 more
doaj   +1 more source

Magnetic Titanium Dioxide Nanocomposites as a Recyclable SERRS Substrate for the Ultrasensitive Detection of Histidine

Molecules
A highly sensitive, selective and recyclable histidine detection method based on magnetic Fe3O4@mTiO2 (M-TiO2) nanocomposites with SERRS was developed.
Hailin Wen, Miao Li, Chao-Yang Zhao, Tao Xu, Shuang Fu, Huimin Sui, Cuiyan Han   +6 more
doaj   +1 more source

[Roles of Histidine Kinases and Histidine Phosphatases in Cancer].

Zhongguo fei ai za zhi = Chinese journal of lung cancer, 2021
Phosphorylation is the most common and important post-translational modification of proteins, which plays an important role in the regulation of cell proliferation, differentiation, development and metabolism, and is closely related to the tumorigenesis and metastasis of cancer.
Yafang DONG, Huimin HAN, Yafeng LI, Lili GUO   +3 more
openaire   +2 more sources