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• W3195774653 endingPage "4719" @default.
• W3195774653 startingPage "4701" @default.
• W3195774653 abstract "Guanosine triphosphate (GTP) cyclohydrolase I (GCH1) catalyzes the conversion of GTP into dihydroneopterin triphosphate (DHNP). DHNP is the first intermediate of the folate de novo biosynthesis pathway in prokaryotic and lower eukaryotic microorganisms and the tetrahydrobiopterin (BH4) biosynthesis pathway in higher eukaryotes. The de novo folate biosynthesis provides essential cofactors for DNA replication, cell division, and synthesis of key amino acids in rapidly replicating pathogen cells, such as Plasmodium falciparum(P. falciparum), a causative agent of malaria. In eukaryotes, the product of the BH4 biosynthesis pathway is essential for the production of nitric oxide and several neurotransmitter precursors. An increased copy number of the malaria parasite P. falciparum GCH1 gene has been reported to influence antimalarial antifolate drug resistance evolution, whereas mutations in the human GCH1 are associated with neuropathic and inflammatory pain disorders. Thus, GCH1 stands as an important and attractive drug target for developing therapeutics. The GCH1 intrinsic dynamics that modulate its activity remains unclear, and key sites that exert allosteric effects across the structure are yet to be elucidated. This study employed the anisotropic network model to analyze the intrinsic motions of the GCH1 structure alone and in complex with its regulatory partner protein. We showed that the GCH1 tunnel-gating mechanism is regulated by a global shear motion and an outward expansion of the central five-helix bundle. We further identified hotspot residues within sites of structural significance for the GCH1 intrinsic allosteric modulation. The obtained results can provide a solid starting point to design novel antineuropathic treatments for humans and novel antimalarial drugs against the malaria parasite P. falciparum GCH1 enzyme." @default.
• W3195774653 created "2021-08-30" @default.
• W3195774653 creator A5036470999 @default.
• W3195774653 creator A5059744384 @default.
• W3195774653 creator A5084130869 @default.
• W3195774653 date "2021-08-27" @default.
• W3195774653 modified "2023-10-14" @default.
• W3195774653 title "GTP Cyclohydrolase I as a Potential Drug Target: New Insights into Its Allosteric Modulation via Normal Mode Analysis" @default.
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• W3195774653 doi "https://doi.org/10.1021/acs.jcim.1c00898" @default.
• W3195774653 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34450011" @default.
• W3195774653 hasPublicationYear "2021" @default.
• W3195774653 type Work @default.
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• W3195774653 citedByCount "6" @default.

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