Download MendeleyDefects in t 6 A tRNA modification due to GON7 and YRDC mutations lead to Galloway-Mowat syndrome.
Arrondel, C., Missoury, S., Snoek, R., Patat, J., Menara, G., Collinet, B., Liger, D., Durand, D., Gribouval, O., Boyer, O., Buscara, L., Martin, G., Machuca, E., Nevo, F., Lescop, E., Braun, D.A., Boschat, A.C., Sanquer, S., Guerrera, I.C., Revy, P., Parisot, M., Masson, C., Boddaert, N., Charbit, M., Decramer, S., Novo, R., Macher, M.A., Ranchin, B., Bacchetta, J., Laurent, A., Collardeau-Frachon, S., van Eerde, A.M., Hildebrandt, F., Magen, D., Antignac, C., van Tilbeurgh, H., Mollet, G.(2019) Nat Commun 10: 3967-3967
- PubMed: 31481669 Search on PubMedSearch on PubMed Central
- DOI: https://doi.org/10.1038/s41467-019-11951-x
- Primary Citation Related Structures:
6GWJ - PubMed Abstract:
N 6 -threonyl-carbamoylation of adenosine 37 of ANN-type tRNAs (t 6 A) is a universal modification essential for translational accuracy and efficiency. The t 6 A pathway uses two sequentially acting enzymes, YRDC and OSGEP, the latter being a subunit of the multiprotein KEOPS complex. We recently identified mutations in genes encoding four out of the five KEOPS subunits in children with Galloway-Mowat syndrome (GAMOS), a clinically heterogeneous autosomal recessive disease characterized by early-onset steroid-resistant nephrotic syndrome and microcephaly. Here we show that mutations in YRDC cause an extremely severe form of GAMOS whereas mutations in GON7, encoding the fifth KEOPS subunit, lead to a milder form of the disease. The crystal structure of the GON7/LAGE3/OSGEP subcomplex shows that the intrinsically disordered GON7 protein becomes partially structured upon binding to LAGE3. The structure and cellular characterization of GON7 suggest its involvement in the cellular stability and quaternary arrangement of the KEOPS complex.
- Laboratory of Hereditary Kidney Diseases, INSERM UMR1163, Université de Paris, Imagine Institute, Paris, France.
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