Inosine Triphosphate Pyrophosphatase Dephosphorylates Ribavirin Triphosphate and Reduced Enzymatic Activity Potentiates Mutagenesis in Hepatitis C Virus
نویسندگان
چکیده
منابع مشابه
Polymorphism of the inosine triphosphate pyrophosphatase gene predicts ribavirin-induced anemia in chronic hepatitis C patients.
Ribavirin (RBV)-induced anemia is a serious side effect of pegylated interferon (PEG-IFN) plus RBV therapy which is the standard care most effective for hepatitis C virus (HCV) infection. In the present study, we investigated the association of inosine triphosphate pyrophosphatase (ITPA) genotypes with RBV-induced hemoglobin (Hb) reduction in HCV patients treated with PEG-IFN/RBV therapy. The g...
متن کاملP-121: Cloning and Expression of The Inosine Triphosphate Pyrophosphatase Gene Variant II in E.coli
Background Environmental and cellular inappropriate conditions can cause damages to cells nucleotide poll. Deamination and oxidation damages interfere with cell�s vital reactions. Inosine triphosphate pyrophosphatase (ITPA), an evolutionary conserved enzyme, plays a critical role in elimination of non-canonical bases. In human genome, the ITPA gene is located on chromosome 20 short arm and tran...
متن کاملStructure of the orthorhombic form of human inosine triphosphate pyrophosphatase.
The structure of human inosine triphosphate pyrophosphohydrolase (ITPA) has been determined using diffraction data to 1.6 A resolution. ITPA contributes to the accurate replication of DNA by cleansing cellular dNTP pools of mutagenic nucleotide purine analogs such as dITP or dXTP. A similar high-resolution unpublished structure has been deposited in the Protein Data Bank from a monoclinic and p...
متن کاملcomparison of inosine triphosphate pyrophosphatase gene expression in chronic myelogenous leukemia patients and controls
objective: one of the most significant damages to the genetic material is oxidative deamination of dna and free nucleotides in the cell pool. incorporation of deaminated purine nucleotides such as inosine triphosphate (itp, ditp) into the dna can increase the frequency of base substitution mutation. it has been suggested that presence and accumulation of these rough nucleotides can lead to gene...
متن کاملITPA (inosine triphosphate pyrophosphatase): from surveillance of nucleotide pools to human disease and pharmacogenetics.
Cellular nucleotide pools are often contaminated by base analog nucleotides which interfere with a plethora of biological reactions, from DNA and RNA synthesis to cellular signaling. An evolutionarily conserved inosine triphosphate pyrophosphatase (ITPA) removes the non-canonical purine (d)NTPs inosine triphosphate and xanthosine triphosphate by hydrolyzing them into their monophosphate form an...
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ژورنال
عنوان ژورنال: Journal of Virology
سال: 2018
ISSN: 0022-538X,1098-5514
DOI: 10.1128/jvi.01087-18