Results 61 to 70 of about 4,400,665 (341)

A New Peptide Synthesis [PDF]

open access: yesNature, 1949
Cook, Heilbron and Levy1 have recently prepared tetraglycylglycine and several di-peptides by reaction of 2-thio-5-thiazolones with amino-acid derivatives. During the past few years, much interest has also been shown in the polymerization potentialities of the N-carboxy anhydrides of α-amino-acids2–5.
openaire   +3 more sources

The many faces and important roles of protein-protein interactions during non-ribosomal peptide synthesis.

open access: yesNatural product reports (Print), 2018
Covering: up to July 2018 Non-ribosomal peptide synthetase (NRPS) machineries are complex, multi-domain proteins that are responsible for the biosynthesis of many important, peptide-derived compounds.
T. Izoré, M. Cryle
semanticscholar   +1 more source

Somatostatin subtype-2 receptor-targeted metal-based anticancer complexes [PDF]

open access: yes, 2012
Conjugates of a dicarba analogue of octreotide, a potent somatostatin agonist whose receptors are overexpressed on tumor cells, with [PtCl 2(dap)] (dap = 1-(carboxylic acid)-1,2-diaminoethane) (3), [(η 6-bip)Os(4-CO 2-pico)Cl] (bip = biphenyl, pico ...
Alejandro González-Cantó   +78 more
core   +5 more sources

Influence of Disulfide Connectivity on Structure and Bioactivity of α-Conotoxin TxIA

open access: yesMolecules, 2014
Cone snails express a sophisticated arsenal of small bioactive peptides known as conopeptides or conotoxins (CTxs). Through evolutionary selection, these peptides have gained the ability to interact with a range of ion channels and receptors, such as ...
Yong Wu   +5 more
doaj   +1 more source

Preparation, Radiolabeling with 68Ga/177Lu and Preclinical Evaluation of Novel Angiotensin Peptide Analog: A New Class of Peptides for Breast Cancer Targeting

open access: yesPharmaceuticals, 2023
Aim: Angiotensin II (AngII) is known to play a significant part in the development of breast cancer by triggering cell propagation of breast cancer, tumor angiogenesis, and regulating tumor invasion and cell migration. AngII arbitrates its action via two
Subhani M. Okarvi
doaj   +1 more source

Evolutionary interplay between viruses and R‐loops

open access: yesFEBS Letters, EarlyView.
Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi   +4 more
wiley   +1 more source

The Peptide Synthesis. II. Use of the Phenol Resin for the Peptide Synthesis [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1968
Abstract The phenol resin is useful as support of the solid phase peptide synthesis. Its use is particularly advantageous for the synthesis of the N-protected peptide fragments, and those which have the intramolecular disulfide bond, such as oxytocin.
Murakami Masuo   +2 more
openaire   +3 more sources

Gene transfer into hepatocytes using asialoglycoprotein receptor mediated endocytosis of DNA complexed with an artificial tetra-antennary galactose ligand [PDF]

open access: yes, 1992
We have constructed an artificial ligand for the hepatocyte-specific asialoglycoprotein receptor for the purpose of generating a synthetic delivery system for DNA.
Ashwell G.   +36 more
core   +1 more source

The epithelial barrier theory proposes a comprehensive explanation for the origins of allergic and other chronic noncommunicable diseases

open access: yesFEBS Letters, EarlyView.
Exposure to common noxious agents (1), including allergens, pollutants, and micro‐nanoplastics, can cause epithelial barrier damage (2) in our body's protective linings. This may trigger an immune response to our microbiome (3). The epithelial barrier theory explains how this process can lead to chronic noncommunicable diseases (4) affecting organs ...
Can Zeyneloglu   +17 more
wiley   +1 more source

Synthesis of hippuric acid in liver homogenate [PDF]

open access: yes, 1947
The synthesis of hippuric acid from benaoic acid and glycine resembles in several respects the synthesis of a peptide bond. A CONH group is formed, it is a to a carboxyl group, and the free energy of its formation is of the same order of magnitude.
Borsook, Henry, Dubnoff, Jacob W.
core  

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