Results 31 to 40 of about 14,286,973 (221)
EFSA Journal, 2017 l‐Tryptophan, technically pure, is a feed additive produced by fermentation with a genetically modified strain of Escherichia coli. The Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) of EFSA, issued two opinions on the safety ...
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) +24 more
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Tryptophan transport in human fibroblast cells : a functional characterization
, 2011 There are indications that serotonergic neurotransmission is disturbed in several psychiatric disorders. One explanation may be disturbed transport of tryptophan (precursor for serotonin synthesis) across cell membranes.
Lewander, Tommy +11 more
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D-, L- and D,L-Tryptophan-Based Polyamidoamino Acids: pH-Dependent Structuring and Fluorescent Properties [PDF]
, 2019 Chiral polyamidoamino acids were obtained by polyaddition of N,N’methylenebisacrylamide with D-, D,L- and L-tryptophan (M-D-Trp, M-D,L-Trp and M-L-Trp). L-tryptophan/glycine copolymers, M-G-L-Trp5, M-G-L-Trp10, M-G-L-Trp20 and M-G-L-Trp40, were prepared ...
Federica Lazzari +17 more
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Horticulturae, 2023 Carrot (Daucus carota L.) seed quality is affected by umbel position due to uneven maturation of carrot seeds produced in different umbel orders. However, keeping this in view, we tested whether seed quality could be improved with the suppression of ...
Anam Noor +9 more
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FEBS Letters, EarlyView.Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley +1 more source
Tryptophan depletion increases nausea, headache and photophobia in migraine sufferers [PDF]
, 2006 Sensitivity to light was investigated 5 and 8 h after consumption of an amino acid drink which contained L-tryptophan (balanced amino acid condition: 19 controls and 22 migraine sufferers) or which produced a short-term reduction in brain serotonin ...
Drummond, P.D.
core
Intestinal transport of tryptophan and its derivatives
, 1964 The intestinal transport of l- and d-isomers of tryptophan and ten derivatives were studied in everted intestinal sacs of golden hamsters. It was found that l-tryptophan, 4-CH3-, 5-CH3-, and 6-CH3-dl-tryptophan, and N-chloroacetyl-l-tryptophan were ...
Linda L. Cohen, K. C. Huang
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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
EFFECTS OF α-METHYL-
, 1955 α-Methyl-DL-tryptophan (AMT) inhibits the oxidation of DL-tryptophan by isotonic suspensions of rat liver, and the oxidation of L-tryptophan, L-tyrosine, DL-phenylalanine, and DL-methionine by cobra venom. The oxidation of L-tryptophan is accompanied by
T. L. Sourkes, Edith Townsend
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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‐tryptophan produced by fermentation with a genetically modified strain of ...
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) +27 more
doaj +1 more source