Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Post-translational regulation of retinal IMPDH1 in vivo to adjust GTP synthesis to illumination conditions

  • Identification data

    Identifier: imarina:6389880
    Authors:
    Plana-Bonamaiso, AnnaLopez-Begines, SantiagoFernandez-Justel, DavidJunza, AlexandraSoler-Tapia, AriadnaAndilla, JordiLoza-Alvarez, PabloLuis Rosa, JoseMiralles, EstherCasals, IsidreYanes, Oscarde la Villa, PedroBuey, Ruben MMendez, Ana
    Abstract:
    © Plana-Bonamaisó et al. We report the in vivo regulation of Inosine-5´-monophosphate dehydrogenase 1 (IMPDH1) in the retina. IMPDH1 catalyzes the rate-limiting step in the de novo synthesis of guanine nucleotides, impacting the cellular pools of GMP, GDP and GTP. Guanine nucleotide homeostasis is central to photoreceptor cells, where cGMP is the signal transducing molecule in the light response. Mutations in IMPDH1 lead to inherited blindness. We unveil a light-dependent phosphorylation of retinal IMPDH1 at Thr159/Ser160 in the Bateman domain that desensitizes the enzyme to allosteric inhibition by GDP/GTP. When exposed to bright light, living mice increase the rate of GTP and ATP synthesis in their retinas; concomitant with IMPDH1 aggregate formation at the outer segment layer. Inhibiting IMPDH activity in living mice delays rod mass recovery. We unveil a novel mechanism of regulation of IMPDH1 in vivo, important for understanding GTP homeostasis in the retina and the pathogenesis of adRP10 IMPDH1 mutations.
  • Others:

    Author, as appears in the article.: Plana-Bonamaiso, Anna; Lopez-Begines, Santiago; Fernandez-Justel, David; Junza, Alexandra; Soler-Tapia, Ariadna; Andilla, Jordi; Loza-Alvarez, Pablo; Luis Rosa, Jose; Miralles, Esther; Casals, Isidre; Yanes, Oscar; de la Villa, Pedro; Buey, Ruben M; Mendez, Ana
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: Junza Martínez, Alexandra / Yanes Torrado, Óscar
    Keywords: Rod Rhodopsin Retinal dystrophy Photoreceptor cells Mutations Multiple phosphorylation Kinase Identification Dominant retinitis-pigmentosa Dehydrogenase type-1 Acid photoreceptor physiology photoreceptor metabolism neuroscience mouse impdh1 enzymology chemical biology cgmp biochemistry
    Abstract: © Plana-Bonamaisó et al. We report the in vivo regulation of Inosine-5´-monophosphate dehydrogenase 1 (IMPDH1) in the retina. IMPDH1 catalyzes the rate-limiting step in the de novo synthesis of guanine nucleotides, impacting the cellular pools of GMP, GDP and GTP. Guanine nucleotide homeostasis is central to photoreceptor cells, where cGMP is the signal transducing molecule in the light response. Mutations in IMPDH1 lead to inherited blindness. We unveil a light-dependent phosphorylation of retinal IMPDH1 at Thr159/Ser160 in the Bateman domain that desensitizes the enzyme to allosteric inhibition by GDP/GTP. When exposed to bright light, living mice increase the rate of GTP and ATP synthesis in their retinas; concomitant with IMPDH1 aggregate formation at the outer segment layer. Inhibiting IMPDH activity in living mice delays rod mass recovery. We unveil a novel mechanism of regulation of IMPDH1 in vivo, important for understanding GTP homeostasis in the retina and the pathogenesis of adRP10 IMPDH1 mutations.
    Thematic Areas: Saúde coletiva Química Nutrição Neuroscience (miscellaneous) Neuroscience (all) Medicine (miscellaneous) Medicina veterinaria Medicina ii Medicina i Interdisciplinar Immunology and microbiology (miscellaneous) Immunology and microbiology (all) Geografía Geociências General neuroscience General medicine General immunology and microbiology General biochemistry,genetics and molecular biology Farmacia Educação física Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências agrárias i Biotecnología Biology Biodiversidade Biochemistry, genetics and molecular biology (miscellaneous) Biochemistry, genetics and molecular biology (all) Astronomia / física
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 2050-084X
    Author's mail: oscar.yanes@urv.cat alexandra.junza@urv.cat
    Author identifier: 0000-0003-3695-7157 0000-0001-7205-0419
    Record's date: 2024-10-12
    Journal volume: 9
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://elifesciences.org/articles/56418
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Elife. 9 e56418-
    APA: Plana-Bonamaiso, Anna; Lopez-Begines, Santiago; Fernandez-Justel, David; Junza, Alexandra; Soler-Tapia, Ariadna; Andilla, Jordi; Loza-Alvarez, Pablo; (2020). Post-translational regulation of retinal IMPDH1 in vivo to adjust GTP synthesis to illumination conditions. Elife, 9(), e56418-. DOI: 10.7554/eLife.56418
    Article's DOI: 10.7554/eLife.56418
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2020
    Publication Type: Journal Publications
  • Keywords:

    Biochemistry, Genetics and Molecular Biology (Miscellaneous),Biology,Immunology and Microbiology (Miscellaneous),Medicine (Miscellaneous),Neuroscience (Miscellaneous)
    Rod
    Rhodopsin
    Retinal dystrophy
    Photoreceptor cells
    Mutations
    Multiple phosphorylation
    Kinase
    Identification
    Dominant retinitis-pigmentosa
    Dehydrogenase type-1
    Acid
    photoreceptor physiology
    photoreceptor metabolism
    neuroscience
    mouse
    impdh1
    enzymology
    chemical biology
    cgmp
    biochemistry
    Saúde coletiva
    Química
    Nutrição
    Neuroscience (miscellaneous)
    Neuroscience (all)
    Medicine (miscellaneous)
    Medicina veterinaria
    Medicina ii
    Medicina i
    Interdisciplinar
    Immunology and microbiology (miscellaneous)
    Immunology and microbiology (all)
    Geografía
    Geociências
    General neuroscience
    General medicine
    General immunology and microbiology
    General biochemistry,genetics and molecular biology
    Farmacia
    Educação física
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências agrárias i
    Biotecnología
    Biology
    Biodiversidade
    Biochemistry, genetics and molecular biology (miscellaneous)
    Biochemistry, genetics and molecular biology (all)
    Astronomia / física
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