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   Articles with "phe tyr" as a keyword



Sensitive β-substituted aliphatic Ile/Val-Xxx and aromatic Phe/Tyr/His-Xxx residues to form [a]+ ions in high energy CID of peptides

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recommendations! Published in 2019 at "International Journal of Mass Spectrometry"

DOI: 10.1016/j.ijms.2019.116195

Abstract: Abstract Residue-specific cleavages resulting in the formation of [a]+ ions of peptides have been examined using 20 keV high-energy (high-E) collision-induced dissociation (CID) with a tandem time-of-flight (TOF/TOF) instrument. High-E CID resulted in relatively sensitive cleavage… read more here.

Keywords: phe tyr; cid; high energy; xxx ... See more keywords

A Plausible Entry to 20 Proteinogenic Amino Acids via Aminomalononitrile Derivatives

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recommendations! Published in 2023 at "Natural Product Communications"

DOI: 10.1177/1934578x231175261

Abstract: Dear Editor, It is not yet known why the number of proteinogenic amino acids is limited to 20. Some explanations for this problem have been attempted, but it is still unresolved. Aminomalononitrile is a hydrogen… read more here.

Keywords: amino acids; proteinogenic amino; phe tyr; side ... See more keywords

Association between peripheral blood serum phenylalanine to tyrosine ratio and the risk of moyamoya disease: a case-control study

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recommendations! Published in 2025 at "Frontiers in Neurology"

DOI: 10.3389/fneur.2025.1554697

Abstract: Background and aims Phenylalanine (Phe) and its metabolite tyrosine (Tyr) have been shown to play an important role in the mechanisms and development of cardiovascular and cerebrovascular disease, and its ratio (Phe/Tyr) has been suggested… read more here.

Keywords: risk mmd; risk; phe tyr;
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A Retrospective Case Series Analysis of the Relationship Between Phenylalanine: Tyrosine Ratio and Cerebral Glucose Metabolism in Classical Phenylketonuria and Hyperphenylalaninemia

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recommendations! Published in 2021 at "Frontiers in Neuroscience"

DOI: 10.3389/fnins.2021.664525

Abstract: We retrospectively examined the relationship between blood biomarkers, in particular the historical mean phenylalanine to tyrosine (Phe:Tyr) ratio, and cerebral glucose metabolism. We hypothesized that the historical mean Phe:Tyr ratio would be more predictive of… read more here.

Keywords: tyr ratio; phe; phe tyr; cerebral glucose ... See more keywords

Influence of Side Chain–Backbone Interactions and Explicit Hydration on Characteristic Aromatic Raman Fingerprints as Analysed in Tripeptides Gly-Xxx-Gly (Xxx = Phe, Tyr, Trp)

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recommendations! Published in 2025 at "International Journal of Molecular Sciences"

DOI: 10.3390/ijms26083911

Abstract: Because of the involvement of π-electron cyclic constituents in their side chains, the so-called aromatic residues give rise to a number of strong, narrow, and well-resolved lines spread over the middle wavenumber (1800–600 cm−1) region… read more here.

Keywords: phe tyr; gly xxx; tyr trp; side ... See more keywords