Results 1 to 10 of about 2,845,268 (289)

D- and Unnatural Amino Acid Substituted Antimicrobial Peptides With Improved Proteolytic Resistance and Their Proteolytic Degradation Characteristics [PDF]

open access: yesFrontiers in Microbiology, 2020
The transition of antimicrobial peptides (AMPs) from the laboratory to market has been severely hindered by their instability toward proteases in biological systems.
Jianguang Lu   +10 more
doaj   +4 more sources

Unnatural Amino Acid: 4-Aminopyrazolonyl Amino Acid Comprising Tri-Peptides Forms Organogel With Co-Solvent (EtOAc:Hexane) [PDF]

open access: yesFrontiers in Chemistry, 2022
Ampyrone is an amino-functionalized heterocyclic pyrazolone derivative that possesses therapeutic values such as analgesic, anti-inflammatory, and antipyretics.
Amarnath Bollu   +9 more
doaj   +2 more sources

5-Amino-3-methyl-Isoxazole-4-carboxylic Acid as a Novel Unnatural Amino Acid in the Solid Phase Synthesis of α/β-Mixed Peptides [PDF]

open access: yesMolecules, 2022
The hybrid peptides consisting of α and β-amino acids show great promise as peptidomimetics that can be used as therapeutic agents. Therefore, the development of new unnatural amino acids and the methods of their incorporation into the peptide chain is ...
Urszula Bąchor   +3 more
doaj   +2 more sources

An Unnatural Amino Acid-Regulated Growth Controller Based on Informational Disturbance [PDF]

open access: yesLife, 2021
We designed a novel growth controller regulated by feeding of an unnatural amino acid, Nε-benzyloxycarbonyl-l-lysine (ZK), using a specific incorporation system at a sense codon. This system is constructed by a pair of modified pyrrolisyl-tRNA synthetase
Yusuke Kato
doaj   +2 more sources

A linear DNA template-based framework for site-specific unnatural amino acid incorporation [PDF]

open access: yesSynthetic and Systems Biotechnology, 2021
Site-specific incorporation of unnatural amino acids (UNAAs) into proteins using an orthogonal translation system (OTS) has expanded the scope of protein-coding chemistry. The key factor affecting UNAA embedding efficiency is the orthogonality of the OTS.
Xinjie Chen   +3 more
doaj   +2 more sources

Unnatural amino acid substitutions to improve in vivo stability and tumor uptake of 68Ga-labeled GRPR-targeted TacBOMB2 derivatives for cancer imaging with positron emission tomography [PDF]

open access: yesEJNMMI Radiopharmacy and Chemistry
Background Overexpressed in various solid tumors, gastrin-releasing peptide receptor (GRPR) is a promising cancer imaging marker and therapeutic target. Although antagonists are preferable for the development of GRPR-targeted radiopharmaceuticals due to ...
Lei Wang   +9 more
doaj   +2 more sources

An unnatural amino acid dependent, conditional Pseudomonas vaccine prevents bacterial infection [PDF]

open access: yesNature Communications
Live vaccines are ideal for inducing immunity but suffer from the need to attenuate their pathogenicity or replication to preclude the possibility of escape.
Michael Pigula   +6 more
doaj   +2 more sources

Discovery of Staircase Chirality through the Design of Unnatural Amino Acid Derivatives [PDF]

open access: yesResearch
Chirality has garnered significant attention in the scientific community since its discovery by Louis Pasteur over a century ago. It has been showing a profound impact on chemical, biomedical, and materials sciences. Significant progress has been made in
Anis U. Rahman   +9 more
doaj   +2 more sources

Fermentative production of the unnatural amino acid l-2-aminobutyric acid based on metabolic engineering [PDF]

open access: yesMicrobial Cell Factories, 2019
Background l-2-aminobutyric acid (l-ABA) is an unnatural amino acid that is a key intermediate for the synthesis of several important pharmaceuticals.
Jian-Miao Xu   +4 more
doaj   +2 more sources

Investigating Macrolactone Formation by Thioesterase Domains through Incorporation of an Unnatural Amino Acid [PDF]

open access: yesStructural Dynamics
Vishakha Choudhary, Tyler M. McCullough, David L. Akey, Meredith A. Skiba, Steffen M. Bernard, Jeffrey D. Kittendorf, Jennifer J. Schmidt, David H. Sherman and Janet L.
Vishakha Choudhary   +2 more
doaj   +2 more sources

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