Results 41 to 50 of about 4,628 (262)

The compositional and evolutionary logic of metabolism

, 2012
Metabolism displays striking and robust regularities in the forms of modularity and hierarchy, whose composition may be compactly described. This renders metabolic architecture comprehensible as a system, and suggests the order in which layers of that ...
Alberts B, Andreini C, Balche W E, Barker H A, Benner S A, Berge C, Braakman R, Brazelton W J, Buss L W, Collins M D, Copley S D, Dagley S, Darwin C, de Duve C, Doyle J, Eric Smith, Erwin D H, Feist A M, Fenchel T, Fisher R A, Fry I, Gerhart J, Gesteland R F, Gould S J, Gray H B, Guiral M, Haldane J B S, Kallen R G, Kauffman S, Kim J, Lengeler J W, Ljungdahl L, MacKenzie R E, Martin W, Massey L K, Metzler D E, Morowitz H J, Morowitz H J, Morowitz H J, Nelson D L, Nitscke W, Odling-Smee F J, Oparin A I, Petsko G A, Puigbo P, Ragsdale S, Ragsdale S W, Rankama K, Razin S, Redfield A C, Redfield A C, Rogier Braakman, Russell M J, Schrödinger E, Schuster P, Segré D, Shapiro R, Simon H A, Simon H A, Smith E, Srinivasan V, Srinivasan V, Sterner R W, Stryer L, Szent-Gyorgyi A, Tazuya K, Utter M F, Vogels G D, von Wettstein D, Vorholt J A, Waber L J, Wald G, Wilson E B, Wächtershäuser G, Yarus M, Yi L   +75 more
core   +1 more source

Photosensitization of peptides and proteins by pterin derivatives

Pteridines, 2017
Proteins are one of the preferential targets of the photosensitized damaging effects of ultraviolet (UV) radiation on biological system. Pterins belong to a family of heterocyclic compounds, which are widespread in living systems and participate in ...
Dantola Maria Laura, Reid Lara O., Castaño Carolina, Lorente Carolina, Oliveros Esther, Thomas Andrés H.   +5 more
doaj   +1 more source

Theoretical Study on the Relative Energies of Anionic Pterin Tautomers

Pteridines, 2009
Pterins exist as several tautomeric forms and behave as weak acids in aqueous solutions. Therefore, several acidbase equilibria may be present. For several pterin derivatives, the range of the experimental pKa lies in the range 6-8.
Soniat Michael, Martin Christopher B.
doaj   +1 more source

Body coloration and mechanisms of colour production in Archelosauria: the case of deirocheline turtles [PDF]

Royal Society Open Science, 2019
Animal body coloration is a complex trait resulting from the interplay of multiple mechanisms. While many studies address the functions of animal coloration, the mechanisms of colour production still remain unknown in most taxa.
Jindřich Brejcha, José Vicente Bataller, Zuzana Bosáková, Jan Geryk, Martina Havlíková, Karel Kleisner, Petr Maršík, Enrique Font   +7 more
doaj   +1 more source

Mycochemical Diversity and Therapeutic Potential of Hymenochaetoid Fungi from Central Asia: Regional and Global Perspectives

New Zealand Journal of Botany, Volume 64, Issue 1, March 2026.
Central Asia harbors a rich yet understudied assemblage of wood‐inhabiting Hymenochaetoid fungi. This review delivers the first comprehensive synthesis of 43 poroid species representing 18 genera documented across montane forests, steppes, and xeric habitats.
Yusufjon Gafforov, Milena Rašeta, Sylvie Rapior, Manzura Yarasheva, Oksana Mykchaylova, Rustamjon Allaberdiev, Şule İnci, Dilfuza Berdieva, Arshad Mehmood Abbasi, Shikhnazar Khodjaev, Dian‐Ming Hu, Weijun Yang, Abudujilili Abuduaini, Maria Letizia Taddei, Mengcen Wang, Islomjon Urinboev, Jiajia Chen   +16 more
wiley   +1 more source

Functional Promiscuity of the COG0720 Family [PDF]

, 2011
The biosynthesis of GTP derived metabolites such as tetrahydrofolate (THF), biopterin (BH4), and the modified tRNA nucleosides queuosine (Q) and archaeosine (G+) relies on several enzymes of the Tunnel-fold superfamily. A subset of these proteins include
Bailly, Marc, Bonnett, Shilah, de Crécy-Lagard, Valérie, El Yacoubi, Basma, Grochowski, Laura L., Haas-Blaby, Crysten, Iwata-Reuyl, Dirk, Phillips, Gabriela, White, Robert H., Xu, Huimin   +9 more
core   +2 more sources

Pteridines XCVIII. Synthesis and Properties of 1-Methylpterins

Pteridines, 1993
A series of 1-methyl-pterin derivatives (6-13) have been synthesized by condensation and methylation reactions. The compounds have been characterized by elemental analyses, pKa deterimations and UV spectra.
Pfleiderer Wolfgang
doaj   +1 more source

Cerebrospinal fluid neopterin analysis in neuropediatric patients: establishment of a new cut off-value for the identification of inflammatory-immune mediated processes [PDF]

, 2018
OBJECTIVE: A high level of cerebrospinal fluid (CSF) neopterin is a marker of central nervous system inflammatory-immune mediated processes. We aimed to assess data from 606 neuropediatric patients, describing the clinical and biochemical features of ...
Artuch Iriberri, Rafael, Cambra Lasaosa, Francisco José, Fernández-Ureña, Sergio, Garcia-Cazorla, Àngels, Jordán García, Iolanda, Molero Luis, Marta, Neopterin Workin Group, Ormazabal Herrero, Aida, Serrano, Mercedes   +8 more
core   +1 more source

Pigments, Chromatophore Structure, and Gene Expression Underlying Colour Polytypy of a Panamanian Poison Frog

Molecular Ecology, Volume 35, Issue 1, January 2026.
ABSTRACT Colour polytypism represents an example of phenotypic diversification shaped by genetic divergence and ecological pressures. Poison frogs of the genus Oophaga (Dendrobatidae) are highly polytypic in coloration, making them an ideal system for investigating the genetic and physiological basis of colour variation.
Vasiliki Mantzana‐Oikonomaki, Giselle Tamayo‐Castillo, Víctor Vásquez‐Cháves, Abel Mora‐Machado, William J. Zamora Ramirez, Roberto Ibáñez, Heike Pröhl, Ariel Rodríguez   +7 more
wiley   +1 more source

Tetrahydrobiopterin Deficiency: From Phenotype to Genotype [PDF]

, 2017
As a result of the selective screening worldwide during the last 18 years, approximately 250 patients with tetrahydrobiopterin deficiency were discovered.
Blau, Nenad, Dhondt, Jean-Louis, Heizmann, Claus W., Thöny, Beat   +3 more
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