Articles with "tryptophan" as a keyword



Enantiomeric separation of tryptophan via novel chiral polyamide composite membrane.

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Published in 2024 at "Chirality"

DOI: 10.1002/chir.23674

Abstract: The separation of chiral drugs continues to pose a significant challenge. However, in recent years, the emergence of membrane-based chiral separation has shown promising effectiveness due to its environmentally friendly, energy-efficient, and cost-effective characteristics. In… read more here.

Keywords: separation; chiral separation; composite membrane; tryptophan ... See more keywords

De Novo Design of Tryptophan Containing Broad‐Spectrum Cationic Antimicrobial Octapeptides

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Published in 2024 at "ChemMedChem"

DOI: 10.1002/cmdc.202400566

Abstract: With the advent of antibiotic resistant organisms, development of alternate classes of molecules other than antibiotics to combat microbial infections, have become extremely important. In this context, antimicrobial peptides have taken center stage of antimicrobial… read more here.

Keywords: broad spectrum; cationic antimicrobial; antimicrobial octapeptides; tryptophan ... See more keywords

A Ferrocene-Tryptophan Conjugate: The Role of the Indolic Nitrogen in Supramolecular Assembly.

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Published in 2017 at "ChemPlusChem"

DOI: 10.1002/cplu.201700407

Abstract: Bio-organometallic ferrocene-containing amino acids and peptides have been reported to form gels and are interesting to study due to their structural properties and applications for biological purposes. In this study, a ferrocene-dicarboxylic acid derivative of… read more here.

Keywords: indolic nitrogen; tryptophan; tryptophan conjugate; ferrocene tryptophan ... See more keywords
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Chromatographic analysis of tryptophan metabolites

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Published in 2017 at "Journal of Separation Science"

DOI: 10.1002/jssc.201700184

Abstract: The kynurenine pathway generates multiple tryptophan metabolites called collectively kynurenines and leads to formation of the enzyme cofactor nicotinamide adenine dinucleotide. The first step in this pathway is tryptophan degradation, initiated by the rate‐limiting enzymes… read more here.

Keywords: analysis tryptophan; chromatographic analysis; tryptophan metabolites; tryptophan ... See more keywords
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Metabolites of microbiota response to tryptophan and intestinal mucosal immunity: A therapeutic target to control intestinal inflammation

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Published in 2020 at "Medicinal Research Reviews"

DOI: 10.1002/med.21752

Abstract: In a complex, diverse intestinal environment, commensal microbiota metabolizes excessive dietary tryptophan to produce more bioactive metabolites connecting with kinds of diverse process, such as host physiological defense, homeostasis, excessive immune activation and the progression… read more here.

Keywords: immunity; microbiota; mucosal immunity; intestinal mucosal ... See more keywords

Enrichment and characterization of a bacterial mixture capable of utilizing C-mannosyl tryptophan as a carbon source

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Published in 2017 at "Glycoconjugate Journal"

DOI: 10.1007/s10719-017-9807-2

Abstract: C-Mannosylation, a protein-modification found in various eukaryotes, involves the attachment of a single mannose molecule to selected tryptophan residues of proteins. Since C-mannosyl tryptophan (CMW) was detected in human urine, it is generally thought that… read more here.

Keywords: carbon source; cmw; mannosyl tryptophan; tryptophan ... See more keywords

Preconditioning of primary human renal proximal tubular epithelial cells without tryptophan increases survival under hypoxia by inducing autophagy

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Published in 2017 at "International Urology and Nephrology"

DOI: 10.1007/s11255-017-1596-9

Abstract: PurposeHypoxia plays a significant role in the pathogenesis of acute kidney injury (AKI). Autophagy protects from AKI. Amino acid deprivation induces autophagy. The effect of l-tryptophan depletion on survival and autophagy in cultures of renal… read more here.

Keywords: renal proximal; without tryptophan; tryptophan; autophagy ... See more keywords

Purification and characterization of Stenotrophomonas maltophilia-derived l-amino acid ester hydrolase for synthesizing dipeptide, isoleucyl-tryptophan

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Published in 2018 at "3 Biotech"

DOI: 10.1007/s13205-018-1195-1

Abstract: In the present study, we purified α-amino acid ester hydrolase (AEH) from cell-free extracts of the Stenotrophomonas maltophilia strain HS1. The approximately 70-kDa AEH from S. maltophilia HS1 (SmAEH) was homogeneous in sodium dodecyl sulphate… read more here.

Keywords: acid ester; amino acid; isoleucyl; tryptophan ... See more keywords

Tryptophan metabolism and its relationship with central nervous system toxicity in people living with HIV switching from efavirenz to dolutegravir

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Published in 2018 at "Journal of Neurovirology"

DOI: 10.1007/s13365-018-0688-3

Abstract: The mechanisms underlying central nervous system (CNS) toxicities in antiretroviral-treated persons living with HIV (PLWH) remain elusive. We investigated the associations between markers of tryptophan metabolism and measurements of CNS toxicity in PLWH. In a… read more here.

Keywords: nervous system; central nervous; tryptophan; toxicity ... See more keywords

Tryptophan circuit in fatigue: From blood to brain and cognition

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Published in 2017 at "Brain Research"

DOI: 10.1016/j.brainres.2017.09.002

Abstract: Brain tryptophan and its neuroactive metabolites play key roles in central fatigue. However, previous brain function analysis targets may have included both glia and neurons together. Here, we clarified the fatigue-cognitive circuit of the central-peripheral… read more here.

Keywords: kynurenic acid; fatigue; tryptophan; circuit ... See more keywords

Removing the by-products acetic acid and NH4+ from the l-tryptophan broth by vacuum thin film evaporation during l-tryptophan production

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Published in 2018 at "Electronic Journal of Biotechnology"

DOI: 10.1016/j.ejbt.2018.04.003

Abstract: Background: During L-tryptophan production by Escherichia coli, the by-products, acetic acid and NH4 +, accumulate in the fermentation broth, resulting in inhibited cell growth and activity and decreased L-tryptophan production. To improve the L-tryptophan yield… read more here.

Keywords: production; acid nh4; tryptophan; vacuum ... See more keywords