Results 31 to 40 of about 20,669 (211)

Metal-Binding Ability of Leu-Enkephalin, Related Glycoconjugates and Peptidomimetics

open access: yesCroatica Chemica Acta, 2015
Both the chemistry and consequences of the nonenzymatic reaction between reducing sugars and reactive amino groups of amino acids, peptides and proteins (known as the Maillard reaction), have received considerable attention in food and health science ...
Zsuzsa Majer   +5 more
doaj   +1 more source

Kinetics of chymotrypsin- and papain-catalysed synthesis of [leucine]enkephalin and [methionine]enkephalin [PDF]

open access: yesBiochemical Journal, 1984
The proteinase-catalysed synthesis of [Leu]enkephalin and [Met]enkephalin was studied kinetically. N alpha-t-Butoxycarbonyl-amino acids and peptides or their ethyl esters served as acyl donors, and amino acid phenylhydrazides were used as acyl acceptors.
openaire   +3 more sources

An Immunocytochemical Study of Endocrine Cells in the Gut of a Stomachless Teleost Fish, Grass Carp, Cyprinidae

open access: yesCell Transplantation, 1993
Nineteen different antisera raised against mammalian hormones were used to identify the occurrence and distribution of endocrine cells in the gut of grass carp (Ctenopharyngodon idellus).
Qian-Sheng Pan, Zhi-Ping Fang
doaj   +1 more source

UHPLC-PDA-ESI-TOF/MS metabolic profiling and antioxidant capacity of arabica and robusta coffee silverskin: antioxidants vs phytotoxins [PDF]

open access: yes, 2017
A deeper knowledge of the chemical composition of coffee silverskin (CS) is needed due to the growing interest in its use as a food additive or an ingredient of dietary supplements.
Lavecchia, R.   +3 more
core   +1 more source

The competitive interplay of 12‐oxophytodienoic acid (OPDA), protein thiols, and glutathione

open access: yesThe FEBS Journal, EarlyView.
12‐Oxophytodienoic acid (OPDA) is a phytohormone involved in plant growth and stress defense. Due to its cyclopentenone moiety, OPDA can form Michael adducts with thiol‐containing compounds such as glutathione and cysteine residues of proteins, resulting in alterations of the cellular redox regulatory network.
Madita Knieper   +8 more
wiley   +1 more source

Advantages of Alkali Metal Adduct Formation in Cyclic Ion Mobility‐Mass Spectrometry of O‐Methylated Cyclodextrin Isomers—Separation and Crossring Fragmentation

open access: yesChemistry–Methods, Volume 6, Issue 6, June 2026.
Cyclic ion mobility–tandem mass spectrometry (cIM‐MS/MS) enables rapid differentiation of O‐methylated cyclodextrin (MeCD) regioisomers. The method separates 2,3‐ and 2,6‐DIMEB (heptakis‐2,3‐ and ‐2,6‐di‐O‐methyl‐β‐cyclodextrins) and identifies them via characteristic crossring fragmentation.
Péter Soma Szakály   +4 more
wiley   +1 more source

Dynamic Metabolic Footprinting Reveals the Key Components of Metabolic Network in Yeast Saccharomyces cerevisiae [PDF]

open access: yes, 2014
Metabolic footprinting offers a relatively easy approach to exploit the potentials of metabolomics for phenotypic characterization of microbial cells.
Chumnanpuen, Pramote   +3 more
core   +3 more sources

Cedrela fissilis Vell. Inner Bark: LC–MS/MS‐Based Chemical Profiling and Toxicological Effects

open access: yesChemistry &Biodiversity, Volume 23, Issue 5, May 2026.
ABSTRACT Investigating the mechanistic toxicity of plant extracts is essential for safety assessment. The predictive toxicological effects of Cedrela fissilis were evaluated, and LC–MS/MS‐based chemical profiling was performed. The hydroethanolic extract (HeECf) and ethyl acetate (EA) fraction were assessed in multimodel systems with different levels ...
Thainá Pereira da Silva Cabral   +10 more
wiley   +1 more source

Isolation and amino acid sequence analysis of a 4,000-dalton dynorphin from porcine pituitary [PDF]

open access: yes, 1982
A 4,000-dalton dynorphin was isolated from porcine pituitary. It has 32 amino acids (Mr = 3,986), with the previously described heptadecapeptide (now called dynorphin A) at its amino terminus and a related tridecapeptide, dynorphin B, at its carboxyl ...
Fischli, Walter   +3 more
core  

Pro-opiomelanocortin co-localizes with corticotropin-releasing factor in axon terminals of the noradrenergic nucleus locus coeruleus [PDF]

open access: yes, 2006
We previously demonstrated that the opioid peptide, enkephalin, and corticotropin-releasing factor (CRF) are occasionally co-localized in individual axon terminals but more frequently converge on common dendrites in the locus coeruleus (LC).
Glaser, Julia D.   +3 more
core   +2 more sources

Home - About - Disclaimer - Privacy