Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun organic chemistry A
ketonic amide derivative ofpteridine responsible for some of the colouring in nature. It is also a component offolic acid .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Work on the poisonous agent in the "death cap" mushroom led to the isolation of the crystalline cyclopeptides phalloidine and amanitine; work on the pigment of butterflies led to the discovery of the biologically important class of pterin compounds.
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Daubner SC, Hillas PJ, Fitzpatrick PF (1997) Characterization of chimeric pterin-dependent hydroxylases: contributions of the regulatory domains of tyrosine and phenylalanine hydroxylase to substrate specificity.
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Dickson PW, Jennings IG, Cotton RG (1994) Delineation of the catalytic core of phenylalanine hydroxylase and identification of glutamate 286 as a critical residue for pterin function.
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J. A. (1998) Structure of nitric oxide synthase oxygenase dimer with pterin and substrate.
Citizendium, the Citizens' Compendium - Recent changes [en] 2008
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The Primary interaction seems to be a parallel stacking of indole aromatic rings of Trp463 and pterin.
Citizendium, the Citizens' Compendium - Recent changes [en] 2008
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The interactions of pterin with haem, the interactions affecting arginine binding and its location at the dimer interface, along with the evidence for each of the roles listed above creates the conceivable possibility that pterin is active in more than one of these capacities, maybe even all.
Citizendium, the Citizens' Compendium - Recent changes [en] 2008
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Crystal structure of constitutive endothelial nitric oxide synthase: a paradigm for pterin function involving a novel metal center.
Citizendium, the Citizens' Compendium - Recent changes [en] 2008
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The questions remaining about pterin - The role of pterin in NOS function is undoubtedly vital as NOS cannot function in its absence.
Citizendium, the Citizens' Compendium - Recent changes [en] 2008
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Formation of a pterin radical in the reaction of the heme domain of inducible nitric oxide synthase with oxygen.
Citizendium, the Citizens' Compendium - Recent changes [en] 2008
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With a greater understanding of function and structure, the questions surrounding the NOS mechanism and the exact role of pterin may be characterized.
Citizendium, the Citizens' Compendium - Recent changes [en] 2008
fbharjo commented on the word pterin
It folds in. Butterfly wings' color are a result of its characteristics. Pteron is Greek for wing.
November 21, 2010