Results 21 to 30 of about 464,765 (299)

A mechanochemical approach to access the proline–proline diketopiperazine framework

open access: yesBeilstein Journal of Organic Chemistry, 2017
Ball milling was exploited to prepare a substituted proline building block by mechanochemical nucleophilic substitution. Subsequently, the mechanocoupling of hindered proline amino acid derivatives was developed to provide proline–proline dipeptides ...
Nicolas Pétry   +9 more
doaj   +1 more source

Mitochondrial dynamics links PINCH-1 signaling to proline metabolic reprogramming and tumor growth

open access: yesCell Stress, 2020
Proline metabolism is critical for cellular response to microenvironmental stress in living organisms across different kingdoms, ranging from bacteria, plants to animals. In bacteria and plants, proline is known to accrue in response to osmotic and other
Ling Guo, Chuanyue Wu
doaj   +1 more source

Colloidal stability of tannins: astringency, wine tasting and beyond [PDF]

open access: yes, 2008
Tannin-tannin and tannin-protein interactions in water-ethanol solvent mixtures are studied in the context of red wine tasting. While tannin self-aggregation is relevant for visual aspect of wine tasting (limpidity and related colloidal phenomena ...
C Poulain   +12 more
core   +1 more source

An Unbound Proline-Rich Signaling Peptide Frequently Samples Cis Conformations in Gaussian Accelerated Molecular Dynamics Simulations

open access: yesFrontiers in Molecular Biosciences, 2021
Disordered proline-rich motifs are common across the proteomes of many species and are often involved in protein-protein interactions. Proline is a unique amino acid due to the covalent bond between the backbone nitrogen and the proline side chain.
Juan Alcantara   +7 more
doaj   +1 more source

Structural Basis for the Substrate Inhibition of Proline Utilization A by Proline

open access: yesMolecules, 2017
Proline utilization A (PutA) is a bifunctional flavoenzyme that catalyzes the two-step oxidation of l-proline to l-glutamate using spatially separated proline dehydrogenase (PRODH) and l-glutamate-γ-semialdehyde dehydrogenase (GSALDH) active sites ...
David A. Korasick   +4 more
doaj   +1 more source

The regulatory mechanisms of proline and hydroxyproline metabolism: Recent advances in perspective

open access: yesFrontiers in Oncology, 2023
For diverse human tumors, growth and metastasis are dependent on proline synthesis, but the mechanisms underlying this association are not clear. Proline incorporated into collagen is primarily synthesized from glutamine.
James M. Phang
doaj   +1 more source

Proline racemases: insights into Trypanosoma cruzi peptides containing D-proline

open access: yesMemorias do Instituto Oswaldo Cruz, 2009
Trypanosoma cruzi proline racemases (TcPRAC) are homodimeric enzymes that interconvert the L and D-enantiomers of proline. At least two paralogous copies of proline racemase (PR) genes are present per parasite haploid genome and they are differentially ...
Nicolas Coatnoan   +3 more
doaj   +1 more source

Conformational Isomerization Involving Conserved Proline Residues Modulates Oligomerization of the NS1 Interferon Response Inhibitor from the Syncytial Respiratory Virus [PDF]

open access: yes, 2019
Interferon response suppression by the respiratory syncytial virus relies on two unique nonstructural proteins, NS1 and NS2, that interact with cellular partners through high-order complexes.
Alonso, Leonardo Gabriel   +9 more
core   +1 more source

Proline metabolism regulates replicative lifespan in the yeast Saccharomyces cerevisiae

open access: yesMicrobial Cell, 2019
In many plants and microorganisms, intracellular proline has a protective role against various stresses, including heat-shock, oxidation and osmolarity. Environmental stresses induce cellular senescence in a variety of eukaryotes.
Yukio Mukai   +7 more
doaj   +1 more source

Exogenous Proline Improves Salt Tolerance of Alfalfa through Modulation of Antioxidant Capacity, Ion Homeostasis, and Proline Metabolism

open access: yesPlants, 2022
Alfalfa (Medicago sativa L.) is an important forage crop, and its productivity is severely affected by salt stress. Although proline is a compatible osmolyte that plays an important role in regulating plant abiotic stress resistance, the basic mechanism ...
Shuaiqi Guo   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy