TY - JOUR
T1 - Defects in t6A tRNA modification due to GON7 and YRDC mutations lead to Galloway-Mowat syndrome
AU - Arrondel, Christelle
AU - Missoury, Sophia
AU - Snoek, Rozemarijn
AU - Patat, Julie
AU - Menara, Giulia
AU - Collinet, Bruno
AU - Liger, Dominique
AU - Durand, Dominique
AU - Gribouval, Olivier
AU - Boyer, Olivia
AU - Buscara, Laurine
AU - Martin, Gaëlle
AU - Machuca, Eduardo
AU - Nevo, Fabien
AU - Lescop, Ewen
AU - Braun, Daniela A.
AU - Boschat, Anne Claire
AU - Sanquer, Sylvia
AU - Guerrera, Ida Chiara
AU - Revy, Patrick
AU - Parisot, Mélanie
AU - Masson, Cécile
AU - Boddaert, Nathalie
AU - Charbit, Marina
AU - Decramer, Stéphane
AU - Novo, Robert
AU - Macher, Marie Alice
AU - Ranchin, Bruno
AU - Bacchetta, Justine
AU - Laurent, Audrey
AU - Collardeau-Frachon, Sophie
AU - van Eerde, Albertien M.
AU - Hildebrandt, Friedhelm
AU - Magen, Daniella
AU - Antignac, Corinne
AU - van Tilbeurgh, Herman
AU - Mollet, Géraldine
PY - 2019/9/3
Y1 - 2019/9/3
N2 - N6-threonyl-carbamoylation of adenosine 37 of ANN-type tRNAs (t6A) is a universal modification essential for translational accuracy and efficiency. The t6A 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.
AB - N6-threonyl-carbamoylation of adenosine 37 of ANN-type tRNAs (t6A) is a universal modification essential for translational accuracy and efficiency. The t6A 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.
KW - Adenosine/analogs & derivatives
KW - Child
KW - Female
KW - GTP-Binding Proteins/chemistry
KW - Hernia, Hiatal/genetics
KW - Humans
KW - Intrinsically Disordered Proteins/genetics
KW - Male
KW - Microcephaly/genetics
KW - Multiprotein Complexes/chemistry
KW - Mutation
KW - Nephrosis/genetics
KW - Nuclear Proteins/chemistry
KW - RNA, Transfer/genetics
KW - RNA-Binding Proteins/chemistry
UR - http://www.scopus.com/inward/record.url?scp=85071756004&partnerID=8YFLogxK
U2 - 10.1038/s41467-019-11951-x
DO - 10.1038/s41467-019-11951-x
M3 - Article
C2 - 31481669
AN - SCOPUS:85071756004
SN - 2041-1723
VL - 10
SP - 1
EP - 13
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 3967
ER -