Results 41 to 50 of about 13,429,421 (274)
Mechanism of Oxidation of L-Histidine by Heptavalent Manganese in Alkaline Medium
E-Journal of Chemistry, 2005 The kinetics of oxidation of L-histidine by manganese(VII) in aqueous alkaline medium at a constant ionic strength of 0.05 mol dm-3 was studied spectrophotometrically.
Timy P. Jose +2 more
doaj +1 more source
The Journal of Poultry Science, 2009 Developmental changes in the levels of carnosine (β-alanyl-L-histidine), its derivative anserine (β-alanyl-1-methyl-L-histidine), and their constituents including β-alanine, L-histidine and 1-methylhistidine in the pectoralis muscle were ...
Momoka Sato +3 more
doaj +1 more source
Study of the structure and properties of zinc silicate stabilized with L-histidine
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2022 This paper presents the results of a study of the process of stabilization of zinc silicate nanoparticles using the amino acid L-histidine. Zinc acetate was used as a precursor, sodium silicate was used as a precipitant, and the amino acid L -histidine ...
A.A. Blinova +5 more
doaj +1 more source
Reconstructing enzyme evolution by protein engineering
FEBS Letters, EarlyView.Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler +2 more
wiley +1 more source
‘Guide and Prejudice’— How Argonautes recognize targets across domains of life
FEBS Letters, EarlyView.Argonaute proteins use short nucleic‐acid guides to locate and regulate specific targets across all domains of life. Despite striking diversity—from human gene silencing to bacterial immune defence—all Argonautes share a conserved three‐stage recognition logic: guide‐directed sampling, progressive target pairing with a conformational checkpoint and ...
Jack P. K. Bravo
wiley +1 more source
Histidine-aspartate phosphotransfer architectures.
, 2018 (A) A canonical two-component signaling system consists of a histidine kinase and a response regulator, wherein a signal is transmitted by transfer of a phosphoryl group from a conserved histidine in the HisKA domain (teal oval) to a conserved aspartate ...
N. Luisa Hiller (48998) +5 more
core +1 more source
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
Epitope Labeling of Histidine Decarboxylase in Drosophila melanogaster [PDF]
, 2006 Histidine decarboxylase (HDC) plays a critical role in the synthesis of histamine, a central nervous system neurotransmitter used by both vertebrates and invertebrates.
Payne, Stephanie A. N.
core
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
EFSA Journal, 2019 Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on l‐histidine monohydrochloride (HCl) monohydrate produced by fermentation using ...
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) +25 more
doaj +1 more source