Results 1 to 10 of about 10,444 (253)

Crystal structure of 2,4-diamino-7-(hydroxymethyl)pteridin-1-ium nitrate [PDF]

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the crystal of the title molecular salt, C7H9N6O+·NO3−, the cations and anions are linked via N—H...O and O—H...O hydrogen bonds, forming sheets parallel to (100). Within the sheets there are numerous hydrogen-bonding ring motifs.
Palaniyappan Sivajeyanthi, Kasthuri Balasubramani, Muthaiah Jeevaraj, Kaliyaperumal Thanigaimani, Nuridayanti Che Khalib, Ibrahim Abdul Razak   +5 more
doaj   +4 more sources

Serum Neopterin, Biopterin, Tryptophan, and Kynurenine Levels in Patients with Fabry Disease [PDF]

Balkan Medical Journal
Background: Fabry disease is characterized by the accumulation of globotriaosylceramide. Substrate accumulation in lysosomes is thought to trigger an inflammatory response and is responsible for progressive organ damage through the induction of ...
Tuğçe Uçar, Mehmet Şerif Cansever, Esra Isat, Tanyel Zubarioğlu, Ayşe Çiğdem Aktuğlu Zeybek, Birol Topçu, Nurhan Seyahi, Ertuğrul Kıykım   +7 more
doaj   +2 more sources

Difference of DNA Compaction Performed by Two kinds of Oncopterin-Mimic Pteridine - Polyamine Conjugates

Pteridines, 2006
Two types of pteridine - polyamine conjugates designed on oncopterin perform different actions to DNA. The most obvious difference is their actions in DNA compaction. One of the pteridine - polyamine conjugates, PT- 2R, containing a polyamine substituent
Murata Shizuaki, Chen Ning
doaj   +2 more sources

Pteridine levels and head weights are correlated with age and colony task in the honey bee, Apis mellifera [PDF]

PeerJ, 2016
Background. The age of an insect strongly influences many aspects of behavior and reproduction. The interaction of age and behavior is epitomized in the temporal polyethism of honey bees in which young adult bees perform nurse and maintenance duties ...
Frank D. Rinkevich, Joseph W. Margotta, Jean M. Pittman, James A. Ottea, Kristen B. Healy   +4 more
doaj   +3 more sources

Design, Synthesis, and Anti-Proliferative Action of Purine/Pteridine-Based Derivatives as Dual Inhibitors of EGFR and BRAF^V600E

Pharmaceuticals, 2023
The investigation of novel EGFR and BRAFV600E dual inhibitors is intended to serve as targeted cancer treatment. Two sets of purine/pteridine-based derivatives were designed and synthesized as EGFR/BRAFV600E dual inhibitors. The majority of the compounds
Samar A. El-Kalyoubi, Hesham A. M. Gomaa, Elshimaa M. N. Abdelhafez, Mohamed Ramadan, Fatimah Agili, Bahaa G. M. Youssif   +5 more
doaj   +1 more source

Time Flies—Age Grading of Adult Flies for the Estimation of the Post-Mortem Interval

Diagnostics, 2021
The estimation of the minimum time since death is one of the main applications of forensic entomology. This can be done by calculating the age of the immature stage of necrophagous flies developing on the corpse, which is confined to approximately 2–4 ...
Jens Amendt, Valentina Bugelli, Victoria Bernhardt   +2 more
doaj   +1 more source

Colour analysis for distinguishing closely related species of the subgenus Mesembrynus Hübner, [1819] Zygaena (M.) minos ([Denis & Schiffermüller], 1775) and Zygaena (M.) purpuralis (Brünnich, 1763) (Lepidoptera: Zygaenidae)

SHILAP, 2021
The wing colours and patterns of the genus Zygaena are limited and mainly red and black. This fact creates problems to distinguish closely related species by visual inspection.
G. Bunetebarth, A. Nahirnic-Beshkova
doaj   +1 more source

Directed search for diuretics among 6-substituted pteridine-2,4,7(1H,3H,8H)-triones

Medičnì Perspektivi, 2022
Directed search for biologically active compounds among heterocycles still remains a relevant area of medical chemistry. Among the significant number of heterocyclic compounds, pteridines deserve special attention.
K.V. Sokolova, V.V. Stavytskyi, S.I. Kovalenko, O.A. Podpletnya   +3 more
doaj   +1 more source

Structure-based design and synthesis of antiparasitic pyrrolopyrimidines targeting pteridine reductase 1 [PDF]

, 2014
The treatment of Human African Trypanosomiasis remains a major unmet health need in sub-Saharan Africa. Approaches involving new molecular targets are important and pteridine reductase 1 (PTR1), an enzyme that reduces dihydrobiopterin in Trypanosoma spp.
Abedawn I. Khalaf, Addie M., Arcari J. T., Baker N., Barrett M. P., Barrett M. P., Bridges D. J., Brun R., Bursavich M. G., Carter N. S., Cavazzuti A., Colin J. Suckling, Colin L. Gibson, Creek D. J., Dawson A., Dincer S., Federica Giordani, Gangjee A., Gibson C. L., Gourley D. G., Judith K. Huggan, Kaspersen S. J., Keri L. Barrack, Kirsten Stewart, Le Brazidec J.-Y., Matovu E., Michael P. Barrett, Mohamed M. S., Mpamhanga C. P., Pui Ee Wong, Raz B., Sienkiewicz N., Simarro P. P., Spinks D., Tari L. W., Taylor E. C., Tessier P. R., Trzoss M., Tulloch L. B., William N. Hunter, Xie H., Zhu G.   +41 more
core   +5 more sources

Analysis of the Influence of Changing and Fixed Temperatures on the Growth and Pteridine Content in the Head of Adults Sarcophaga crassipalpis (Diptera: Sarcophagidae)

Animals, 2023
Flesh flies (Diptera: Sarcophagidae) are regarded as significant in medical and veterinary entomology, and their development models can be utilized as considerable markers to ascertain the minimum postmortem interval (PMImin).
Fernand Jocelin Ngando, Xiangyan Zhang, Hongke Qu, Changquan Zhang, Fengqin Yang, Yakai Feng, Yanjie Shang, Sile Chen, Lipin Ren, Yadong Guo   +9 more
doaj   +1 more source