ArticleJournal of molecular modeling2011
In silico study on the substrate binding manner in human myo-inositol monophosphatase 2.
Article in Journal of molecular modeling, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed, 5 citations in OpenAlex.
- IMPA2 polymorphisms and risk of ischemic stroke in a northwest Han Chinese population.Oncotarget · 2016Article
- Defective craniofacial development and brain function in a mouse model for depletion of intracellular inositol synthesis.The Journal of biological chemistry · 2014Article
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Authors and funding
9 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The human IMPA2 gene encoding myo-inositol monophosphatase 2 is highly implicated with bipolar disorder but the substrates and the reaction mechanism of myo-inositol monophosphatase 2 have not been well elucidated.9 In the present study, we constructed 3D models of three- and two-Mg(2+)-ion bound myo-inositol monophosphatase 2, and studied substrate-binding manners using the docking program AutoDock3. The subsequent study showed that the three-metal-ion model could interact with myo-inositol monophosphates, as follows: The phosphate moiety coordinated three Mg(2+) ions, and the inositol ring formed hydrogen bonds with the amino acids conserved in the family. Furthermore, the OH group vicinal to the phosphate group formed a hydrogen bond with a non-bridging oxygen atom of the phosphate. These interactions have been proposed as crucial for forming the transitional state, bipyramidal structure in the bovine myo-inositol monophosphatase. We therefore propose that the human myo-inositol monophosphatase 2 interacts with myo-inositol monophosphates in the three-metal-ion bound form, and proceeds the dephosphorylation through the three-metal-ion theory.
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