Molecular basis for fibroblast growth factor 23 O-glycosylation by GalNAc-T3.
Molecular basis for fibroblast growth factor 23 O-glycosylation by GalNAc-T3.
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DOI:
10.1038/s41589-019-0444-x
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发表时间:
2020-03
影响因子:
14.8
通讯作者:
Hurtado-Guerrero R
中科院分区:
文献类型:
--
作者:
de Las Rivas M;Paul Daniel EJ;Narimatsu Y;Compañón I;Kato K;Hermosilla P;Thureau A;Ceballos-Laita L;Coelho H;Bernadó P;Marcelo F;Hansen L;Maeda R;Lostao A;Corzana F;Clausen H;Gerken TA;Hurtado-Guerrero R
Polypeptide GalNAc-transferase T3 (GalNAc-T3) regulates fibroblast growth factor 23 (FGF23) by O-glycosylating Thr178 in a furin proprotein processing motif RHT178R↓S. FGF23 regulates phosphate homeostasis and deficiency in GALNT3 or FGF23 results in hyperphosphatemia and familial tumoral calcinosis. We explored the molecular mechanism for GalNAc-T3 glycosylation of FGF23 using engineered cell models and biophysical studies including kinetics, molecular dynamics and X-ray crystallography of GalNAc-T3 complexed to glycopeptide substrates. GalNAc-T3 uses a lectin domain mediated mechanism to glycosylate Thr178 requiring previous glycosylation at Thr171. Notably, Thr178 is a poor substrate site with limiting glycosylation due to substrate clashes leading to destabilization of the catalytic domain flexible loop. We suggest GalNAc-T3 specificity for FGF23 and its ability to control circulating levels of intact FGF23 is achieved by FGF23 being a poor substrate. GalNAc-T3’s structure further reveals the molecular bases for reported disease-causing mutations. Our findings provide an insight into how GalNAc-T isoenzymes achieve isoenzyme-specific nonredundant functions.
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影响因子:
16.6
作者:
de Las Rivas M;Lira-Navarrete E;Daniel EJP;Compañón I;Coelho H;Diniz A;Jiménez-Barbero J;Peregrina JM;Clausen H;Corzana F;Marcelo F;Jiménez-Osés G;Gerken TA;Hurtado-Guerrero R
通讯作者:
Hurtado-Guerrero R
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
4.8
作者:
Bennett, EP;Hassan, H;Clausen, H
通讯作者:
Clausen, H
影响因子:
4.3
作者:
Joshi, Hiren J.;Hansen, Lars;Schjoldager, Katrine T.
通讯作者:
Schjoldager, Katrine T.
影响因子:
4.3
作者:
Kong, Yun;Joshi, Hiren J.;Clausen, Henrik
通讯作者:
Clausen, Henrik