Results 21 to 30 of about 18,412 (234)

Asperopiperazines A and B: Antimicrobial and Cytotoxic Dipeptides from a Tunicate-Derived Fungus Aspergillus sp. DY001

open access: yesMarine Drugs, 2022
Investigation of the cytotoxic fractions of the ethyl acetate extract of the fermentation broth of the tunicate-derived Aspergillus sp. DY001 afforded two new dipeptides, asperopiperazines A and B (1 and 2), along with the previously reported compounds (+
Diaa T. A. Youssef   +2 more
doaj   +1 more source

Quantum mechanical calculation of the effects of stiff and rigid constraints in the conformational equilibrium of the Alanine dipeptide [PDF]

open access: yes, 2006
If constraints are imposed on a macromolecule, two inequivalent classical models may be used: the stiff and the rigid one. This work studies the effects of such constraints on the Conformational Equilibrium Distribution (CED) of the model dipeptide HCO-L-
Abagyan   +95 more
core   +3 more sources

Self-assembling dipeptide antibacterial nanostructures with membrane disrupting activity. [PDF]

open access: yes, 2017
Peptide-based supramolecular assemblies are a promising class of nanomaterials with important biomedical applications, specifically in drug delivery and tissue regeneration.
Adler-Abramovich, Lihi   +10 more
core   +3 more sources

The tRNA-Dependent Biosynthesis of Modified Cyclic Dipeptides [PDF]

open access: yesInternational Journal of Molecular Sciences, 2014
In recent years it has become apparent that aminoacyl-tRNAs are not only crucial components involved in protein biosynthesis, but are also used as substrates and amino acid donors in a variety of other important cellular processes, ranging from bacterial cell wall biosynthesis and lipid modification to protein turnover and secondary metabolite assembly.
Giessen, Tobias W., Marahiel, Mohamed A.
openaire   +2 more sources

Trypsin inhibition by macrocyclic and open-chain variants of the squash inhibitor MCoTI-II [PDF]

open access: yes, 2005
MCoTl-I and MCoTl-II from the seeds of Momordica cochinchinensis are inhibitors of trypsin-like proteases and the only known members of the large family of squash inhibitors that are cyclic and contain an additional loop connecting the amino- and the ...
Avrutina, Olga   +6 more
core   +1 more source

Exploring the ring-closing metathesis for the construction of the solomonamide macrocyclic core: identification of bioactive precursors [PDF]

open access: yes, 2018
New synthetic strategies directed toward the novel cyclopeptides solomonamides have been explored utilizing an olefin metathesis as the key reaction.
Carrillo Fernández, Paloma   +7 more
core   +3 more sources

Synthesis and Biological Activities of Some New (Nα-Dinicotinoyl)- bis-L-Leucyl Linear and Macrocyclic Peptides

open access: yesMolecules, 2014
A series of linear and macrocyclic peptides 3–12 were synthesized using 3,5-pyridinedicarboxylic acid (1) as starting material and screened for their antimicrobial, anti-inflammatory and anticancer activities.
Suzan Khayyat, Abd El-Galil Amr
doaj   +1 more source

Stereoselective synthesis of α-amino-C-phosphinic acids and derivatives [PDF]

open access: yes, 2016
α-Amino-C-phosphinic acids and derivatives are an important group of compounds of synthetic and medicinal interest and particular attention has been dedicated to their stereoselective synthesis in recent years. Among these, phosphinic pseudopeptides have
Cativiela, Carlos   +3 more
core   +3 more sources

Protein synthesis with conformationally constrained cyclic dipeptides

open access: yesBioorganic & Medicinal Chemistry, 2020
We have synthesized several conformationally constrained dipeptide analogues as possible substrates for incorporation into proteins. These have included three cyclic dipeptides formed from Boc derivatives of 2,4-diaminobutyric acid, ornithine and lysine, having 5-, 6-, and 7-membered lactam rings, respectively.
Chao, Zhang   +3 more
openaire   +3 more sources

Three previously undescribed metabolites from Cordyceps cicadae JXCH-1, an entomopathogenic fungus

open access: yesNatural Products and Bioprospecting, 2023
Three previously undescribed compounds, cordycicadione (1), cordycicadin F (2), and 7-hydroxybassiatin (3), were isolated from the cultures of Cordyceps cicadae JXCH1, an entomopathogenic fungus.
Jing Fan   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy