Results 11 to 20 of about 109,831 (197)

Viral hijacking of a replicative helicase loader and its implications for helicase loading control and phage replication

open access: yeseLife, 2016
Replisome assembly requires the loading of replicative hexameric helicases onto origins by AAA+ ATPases. How loader activity is appropriately controlled remains unclear.
Iris V Hood, James M Berger
doaj   +1 more source

The Effects of SARS CoV-2 nsp13 Mutations on the Structure and Stability of Helicase in Chinese Isolates

open access: yesEuropean Journal of Biology, 2022
Objective: Coronavirus Disease 2019 (COVID19) is a viral disease caused by Severe Acute Respiratory Syndrome Coronavirus-2 (SARS CoV-2). The high mutation propensity of the SARS CoV-2 genome is one of the biggest threats to the long-term validity of ...
Ekrem Akbulut
doaj   +1 more source

Free-energy simulations reveal molecular mechanism for functional switch of a DNA helicase

open access: yeseLife, 2018
Helicases play key roles in genome maintenance, yet it remains elusive how these enzymes change conformations and how transitions between different conformational states regulate nucleic acid reshaping.
Wen Ma   +4 more
doaj   +1 more source

DNA Helicase–Polymerase Coupling in Bacteriophage DNA Replication

open access: yesViruses, 2021
Bacteriophages have long been model systems to study the molecular mechanisms of DNA replication. During DNA replication, a DNA helicase and a DNA polymerase cooperatively unwind the parental DNA.
Chen-Yu Lo, Yang Gao
doaj   +1 more source

Potential Adjuvant Therapeutic Effect of Lactobacillus plantarum Probio-88 Postbiotics against SARS-COV-2

open access: yesVaccines, 2021
In response to the ongoing COVID-19 pandemic, the global effort to develop high efficacy countermeasures to control the infection are being conducted at full swing.
Irfan A. Rather   +6 more
doaj   +1 more source

Biochemical characterization of Plasmodium falciparum parasite specific helicase 1 (PfPSH1)

open access: yesFEBS Open Bio, 2019
Malaria, a disease caused by infection with parasites of the genus Plasmodium, causes millions of deaths worldwide annually. Of the five Plasmodium species that can infect humans, Plasmodium falciparum causes the most serious parasitic infection.
Manish Chauhan   +4 more
doaj   +1 more source

Biochemical Characterization of Middle East Respiratory Syndrome Coronavirus Helicase

open access: yesmSphere, 2016
Middle East respiratory syndrome coronavirus (MERS-CoV) helicase is a superfamily 1 helicase containing seven conserved motifs. We have cloned, expressed, and purified a Strep-fused recombinant MERS-CoV nonstructural protein 13 (M-nsp13) helicase ...
Adeyemi O. Adedeji, Hilary Lazarus
doaj   +1 more source

Structural and Functional Studies of Chikungunya Virus nsP2

open access: yesProceedings, 2020
Chikungunya virus (CHIKV) is transmitted to humans through mosquitoes and causes Chikungunya fever. Nonstructural protein 2 (nsP2) contains an N-terminal RNA helicase with both nucleotide triphosphatase and RNA triphosphatase activities, and a C-terminal
Yee Song Law   +10 more
doaj   +1 more source

Structure Prediction and Analysis of Hepatitis E Virus Non-Structural Proteins from the Replication and Transcription Machinery by AlphaFold2

open access: yesViruses, 2022
Hepatitis E virus (HEV) is a major cause of acute viral hepatitis in humans globally. Considered for a long while a public health issue only in developing countries, the HEV infection is now a global public health concern.
Adeline Goulet   +3 more
doaj   +1 more source

Dynamics and Conformations of a Full-Length CRESS-DNA Replicase

open access: yesViruses, 2023
Circular Rep-encoding single-stranded DNA (CRESS-DNA) viruses encode for a Replicase (Rep) that is essential for viral replication. Rep is a helicase with three domains: an endonuclease, an oligomeric, and an ATPase domain (ED, OD, and AD).
Elvira Tarasova, Reza Khayat
doaj   +1 more source

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