Results 21 to 30 of about 291,783 (305)

The incorporation of Me-histidine complexes in the structure of FAU-type zeolite: Characterization of the obtained materials [PDF]

open access: yesHemijska Industrija, 2008
L-histidine, a naturally occurring amino acid, was incorporated inside the supercages of FAU type zeolite in a form of Me-complex entity (Me = Cu(II), Zn(II), Fe(III)).
Stošić Dušan   +5 more
doaj   +1 more source

Histidine-Specific Peptide Modification via Visible-Light-Promoted C–H Alkylation [PDF]

open access: yes, 2019
Histidine (His) carries a unique heteroaromatic imidazole side chain and plays irreplaceable functional roles in peptides and proteins. Existing strategies for site-selective histidine modification predominantly rely on the N-substitution reactions of ...
Jie Zhao (49409)   +8 more
core   +1 more source

Development of Organelle Replacement Therapy Using a Stearyl-Polyhistidine Peptide against Lysosomal Storage Disease Cells

open access: yesMolecules, 2019
We previously reported on a polyhistidine peptide, His16 peptide, as a new cell-penetrating peptide. This peptide is anticipated to be a new carrier for drug delivery systems (DDSs) for targeting intracellular lysosomes because it can transport ...
Taiki Hayashi   +3 more
doaj   +1 more source

Histidine-Mediated Intramolecular Electrostatic Repulsion for Controlling pH-Dependent Protein–Protein Interaction [PDF]

open access: yes, 2019
Protein–protein interactions that can be controlled by environmental triggers have immense potential in various biological and industrial applications.
Momoko Ueda (7525199)   +13 more
core   +1 more source

Fluorimetric Method for the Determination of Histidine in Random Human Urine Based on Zone Fluidics

open access: yesMolecules, 2020
In the present study, the determination of histidine (HIS) by an on-line flow method based on the concept of zone fluidics is reported. HIS reacts fast with o-phthalaldehyde at a mildly basic medium (pH 7.5) and in the absence of additional nucleophilic ...
Antonios Alevridis   +3 more
doaj   +1 more source

Histidine-based salt as an ionic tag for proline: application in enantioselective cross aldol reaction in ionic liquids [PDF]

open access: yes, 2020
A new ionic-liquid supported aminocatalyst was synthesized by the peptide coupling of proline on a ring-dialkylated histidine salt serving as ionic support.
Frédéric Guillen (8692575)   +1 more
core   +1 more source

Plasma free fatty acid levels influence Zn2+-dependent histidine-rich glycoprotein-heparin interactions via an allosteric switch on serum albumin [PDF]

open access: yes, 2014
Background: Histidine-rich glycoprotein (HRG) regulates coagulation, through its ability to bind and neutralize heparins. HRG associates with zinc ions (Zn2+) to stimulate HRG-heparin complex formation. Under normal conditions the majority of plasma Zn2+
Schwarz-Linek, Ulrich   +4 more
core   +1 more source

Exogenous addition of histidine reduces copper availability in the yeast Saccharomyces cerevisiae [PDF]

open access: yes, 2014
The basic amino acid histidine inhibited yeast cell growth more severely than lysine and arginine. Overexpression of CTR1, which encodes a high-affinity copper transporter on the plasma membrane, or addition of copper to the medium alleviated this ...
Ryo Nasuno   +6 more
core   +1 more source

Histidine-Containing Amphiphilic Peptide-Based Non-Cytotoxic Hydrogelator with Antibacterial Activity and Sustainable Drug Release [PDF]

open access: yes, 2023
A histidine-based amphiphilic peptide (P) has been found to form an injectable transparent hydrogel in phosphate buffer solution over a pH range from 7.0 to 8.5 with an inherent antibacterial property. It also formed a hydrogel in water at pH = 6.7.
Subhadeep Das   +21 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

open access: yesPoultry
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   +6 more
doaj   +1 more source

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