LATS1/WARTS phosphorylates MYPT1 to counteract PLK1 and regulate mammalian mitotic progression.
LATS1/WARTS phosphorylates MYPT1 to counteract PLK1 and regulate mammalian mitotic progression.
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LATS1/WARTS磷酸化MyPT1以抵消PLK1并调节哺乳动物有丝分裂进展。
DOI:
10.1083/jcb.201110110
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发表时间:
2012-05-28
期刊:
影响因子:
--
通讯作者:
Kuninaka S
中科院分区:
文献类型:
--
作者:
Chiyoda T;Sugiyama N;Shimizu T;Naoe H;Kobayashi Y;Ishizawa J;Arima Y;Tsuda H;Ito M;Kaibuchi K;Aoki D;Ishihama Y;Saya H;Kuninaka S
Showing convergence with budding yeast mitotic exit network signaling, the LATS1/WARTS kinase phosphorylates the MYPT1 phosphatase to control PLK1 at the G2 DNA damage checkpoint. In the mitotic exit network of budding yeast, Dbf2 kinase phosphorylates and regulates Cdc14 phosphatase. In contrast, no phosphatase substrates of LATS1/WARTS kinase, the mammalian equivalent of Dbf2, has been reported. To address this discrepancy, we performed phosphoproteomic screening using LATS1 kinase. Screening identified MYPT1 (myosin phosphatase–targeting subunit 1) as a new substrate for LATS1. LATS1 directly and preferentially phosphorylated serine 445 (S445) of MYPT1. An MYPT1 mutant (S445A) failed to dephosphorylate Thr 210 of PLK1 (pololike kinase 1), thereby activating PLK1. This suggests that LATS1 promotes MYPT1 to antagonize PLK1 activity. Consistent with this, LATS1-depleted HeLa cells or fibroblasts from LATS1 knockout mice showed increased PLK1 activity. We also found deoxyribonucleic acid (DNA) damage–induced LATS1 activation caused PLK1 suppression via the phosphorylation of MYPT1 S445. Furthermore, LATS1 knockdown cells showed reduced G2 checkpoint arrest after DNA damage. These results indicate that LATS1 phosphorylates a phosphatase as does the yeast Dbf2 and demonstrate a novel role of LATS1 in controlling PLK1 at the G2 DNA damage checkpoint.
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影响因子:
64.5
作者:
Bassermann, Florian;Frescas, David;Guardavaccaro, Daniele;Busino, Luca;Peschiaroli, Angelo;Pagano, Michele
通讯作者:
Pagano, Michele
影响因子:
11.2
作者:
Bothos, J;Tuttle, RL;Halazonetis, TD
通讯作者:
Halazonetis, TD
影响因子:
50.3
作者:
Manchado, Eusebio;Guillamot, Maria;Malumbres, Marcos
通讯作者:
Malumbres, Marcos
DOI:
10.1083/jcb.200812022
发表时间:
2009-02-23
期刊:
The Journal of cell biology
影响因子:
--
作者:
Mohl DA;Huddleston MJ;Collingwood TS;Annan RS;Deshaies RJ
通讯作者:
Deshaies RJ
DOI:
10.1083/jcb.149.5.1073
发表时间:
2000-05-29
期刊:
The Journal of cell biology
影响因子:
--
作者:
Hirota T;Morisaki T;Nishiyama Y;Marumoto T;Tada K;Hara T;Masuko N;Inagaki M;Hatakeyama K;Saya H
通讯作者:
Saya H