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Photophysics and Photochemistry of Pterins in Aqueous Solution
ChemInform, 2006AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Andrés H. Thomas, Carolina Lorente
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CHAPTER 2:Pterin-Inspired Model Compounds of Molybdenum Enzymes
, 2016The molybdenum cofactor at the catalytic heart of mononuclear molybdoenzymes comprises a molybdenum ion coordinated by one or two dithiolene ligands containing an N-heterocyclic structure known as pterin.
S. Burgmayer, B. Williams, P. Basu
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pH-related and site-specific excited-state proton transfer from pterin to acetate.
Journal of Physical Chemistry B, 2014The pH-related fluorescence quenching mechanism of 2-amino-4-hydroxypteridine (pterin), a biologic functional molecule, in the presence of acetate ion has been fully investigated for the first time. Using a combined experimental and theoretical approach,
Lei Liu, Dapeng Yang, Peng Li
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Nitric-Oxide-Synthase Inhibitors II — Pterin Antagonists/Anti-Pterins
2000In addition to heme, flavin adenine dinucleotide (FAD) and flavin mononucleotide (FMN), nitric oxide synthases (NOS) require tetrahydrobiopterin (H4B). This was first demonstrated for homogenates of stimulated murine macrophages (KWON et al. 1989; TAYEH and MARLETTA 1989). Unlike other enzymes, e.g.
H. H. H. W. Schmidt, E. R. Werner
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Oxygen Activation by Flavins and Pterins
1995As discussed in other chapters in this volume, the high reduction potential of O2 makes it thermodynamically an excellent oxidizing agent for most biochemicals. However, the activation energy for these reactions is rather high, and O2 is kinetically unreactive without the intervention of a catalyst.
Vincent Massey +2 more
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Inhibition of GTP cyclohydrolase I by pterins
Biochimica et Biophysica Acta (BBA) - General Subjects, 1988Pterins inhibit rat liver GTP cyclohydrolase I activity noncompetitively. Reduced pterins, such as 7,8-dihydro-D-neopterin, (6R,S)-5,6,7,8-tetrahydro-D-neopterin, 7,8-dihydro-L-biopterin, (6R)-5,6,7,8-tetrahydro-L-biopterin, L-sepiapterin, and DL-6-methyl-5,6,7,8-tetrahydropterin are approximately 12-times more potent as inhibitors than are oxidized ...
Aftab Alam, Yixian Zhang, Rong-Sen Shen
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Archiv f�r Mikrobiologie, 1962
In elf verschiedenen Gattungen aus sechs Klassen der Algen wurde neben den Streptococcus faecalis-aktiven Verbindungen der Folsaure-Gruppe im Wachstumstest mit Crithidia fasciculata “unkonjugiertes” Pterin nachgewiesen. Dieses besitzt — als Voraussetzung fur seine Wirksamkeit gegenuber Crithidia — an Stelle der p-Aminobenzoylglutaminsaure eine ...
I. Ziegler, H. Schmidt, Hubert Ziegler
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In elf verschiedenen Gattungen aus sechs Klassen der Algen wurde neben den Streptococcus faecalis-aktiven Verbindungen der Folsaure-Gruppe im Wachstumstest mit Crithidia fasciculata “unkonjugiertes” Pterin nachgewiesen. Dieses besitzt — als Voraussetzung fur seine Wirksamkeit gegenuber Crithidia — an Stelle der p-Aminobenzoylglutaminsaure eine ...
I. Ziegler, H. Schmidt, Hubert Ziegler
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Justus Liebigs Annalen der Chemie, 1936