Results 111 to 120 of about 27,209 (247)

An Efficient Chemoenzymatic Process for Preparation of Ribavirin

International Journal of Chemical Engineering, 2015
Ribavirin is an important antiviral drug, which is used for treatment of many diseases. The pilot-scale chemoenzymatic process for synthesis of the active pharmaceutical ingredient Ribavirin was developed with 32% overall yield and more than 99.5% purity.
Vladimir Sakharov, Sergey Baykov, Irina Konstantinova, Roman Esipov, Mikhail Dorogov   +4 more
doaj   +1 more source

Oligomeric Symmetry of Purine Nucleoside Phosphorylases

Symmetry
Many enzymes are composed of several identical subunits, which are arranged in a regular fashion and usually comply with some definite symmetry. This symmetry may be approximate or exact and may or may not coincide with the symmetry of crystallographic packing.
Boris Gomaz, Zoran Štefanić
openaire   +2 more sources

Severe combined immunodeficiency-an update [PDF]

, 2015
Severe combined immunodeficiencies (SCIDs) are a group of inherited disorders responsible for severe dysfunctions of the immune system. These diseases are life-threatening when the diagnosis is made too late; they are the most severe forms of primary ...
CIRILLO, EMILIA, D'ASSANTE, ROBERTA, Di Lillo, Cristina, Galasso, Giovanni, GALLO, VERA, GIARDINO, GIULIANA, GRASSO, FIORENTINO, PIGNATA, CLAUDIO, Romano, Roberta   +8 more
core   +1 more source

Site-Selective Ribosylation of Fluorescent Nucleobase Analogs Using Purine-Nucleoside Phosphorylase as a Catalyst: Effects of Point Mutations

Molecules, 2015
Enzymatic ribosylation of fluorescent 8-azapurine derivatives, like 8-azaguanine and 2,6-diamino-8-azapurine, with purine-nucleoside phosphorylase (PNP) as a catalyst, leads to N9, N8, and N7-ribosides.
Alicja Stachelska-Wierzchowska, Jacek Wierzchowski, Agnieszka Bzowska, Beata Wielgus-Kutrowska   +3 more
doaj   +1 more source

5'-nucleotidases, nucleosides and their distribution in the brain: pathological and therapeutic implications [PDF]

, 2013
Elements of the nucleoside system (nucleoside levels, 5'-nucleotidases (5'NTs) and other nucleoside metabolic enzymes, nucleoside transporters and nucleoside receptors) are unevenly distributed in the brain, suggesting that nucleosides have region ...
Dobolyi, Árpád, Juhász, Gábor, Kovács, Zsolt, Kékesi, Katalin A.   +3 more
core  

Computer-aided rational design of acyclovir analogs to inhibit purine nucleoside phosphorylase

Pharmaceutical and Biomedical Research, 2019
Purine nucleoside phosphorylase (PNP) is one of the major enzymes in the purine salvage pathway. It is responsible for the elevation of deoxyguanosine, and thus considered as the potent target in T-cell lymphoma.
Nusrat Jahan Selsi, Lira Barua, Debpriya Bhattacharjee, Gulamur Rahman, Syeda Sakiatuz Zannat, Najia Absar Munia, Rubaiyat Fahad, Tanjiba Harun Bipasha, Azizur Rahman, Raju Dash   +9 more
doaj  

Purine nucleoside phosphorylase deficiency [PDF]

, 2020
  +5 more sources

Purine Nucleoside Phosphorylase Deficiency in Two Unrelated Patients with Autoimmune Hemolytic Anemia and Eosinophilia: Two Novel Mutations. [PDF]

Arch Iran Med, 2023
Alizadeh Z, Badalzadeh M, Heydarlou H, Shakerian L, Mahlooji Rad M, Zandieh F, Fazlollahi MR.   +6 more
europepmc   +1 more source

Failure of dideoxynucleosides to inhibit human immunodeficiency virus replication in cultured human macrophages. [PDF]

, 1987
Primary human monocyte-derived macrophages (MDM) were shown to have diminished deoxynucleoside kinase activities compared to T lymphoblasts, and a reduced ability to phosphorylate dideoxynucleosides with anti-human immunodeficiency virus (HIV) activity ...
Carson, DA, Kornbluth, RS, Richman, DD
core  

The structure of His-tagged Geobacillus stearothermophilus purine nucleoside phosphorylase reveals a `spanner in the works'. [PDF]

Acta Crystallogr F Struct Biol Commun, 2022
Given FM, Moran F, Johns AS, Titterington JA, Allison TM, Crittenden DL, Johnston JM.   +6 more
europepmc   +1 more source