The essential role of PP1beta in Drosophila is to regulate nonmuscle myosin.
The essential role of PP1beta in Drosophila is to regulate nonmuscle myosin.
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PP1β 在果蝇中的重要作用是调节非肌肉肌球蛋白。
DOI:
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发表时间:
2004
影响因子:
3.3
通讯作者:
L. Alphey
中科院分区:
文献类型:
--
作者:
N. Vereshchagina;D. Bennett;B. Szöőr;Jasmin Kirchner;S. Gross;E. Vissi;H. White;L. Alphey
Reversible phosphorylation of myosin regulatory light chain (MRLC) is a key regulatory mechanism controlling myosin activity and thus regulating the actin/myosin cytoskeleton. We show that Drosophila PP1beta, a specific isoform of serine/threonine protein phosphatase 1 (PP1), regulates nonmuscle myosin and that this is the essential role of PP1beta. Loss of PP1beta leads to increased levels of phosphorylated nonmuscle MRLC (Sqh) and actin disorganisation; these phenotypes can be suppressed by reducing the amount of active myosin. Drosophila has two nonmuscle myosin targeting subunits, one of which (MYPT-75D) resembles MYPT3, binds specifically to PP1beta, and activates PP1beta's Sqh phosphatase activity. Expression of a mutant form of MYPT-75D that is unable to bind PP1 results in elevation of Sqh phosphorylation in vivo and leads to phenotypes that can also be suppressed by reducing the amount of active myosin. The similarity between fly and human PP1beta and MYPT genes suggests this role may be conserved.
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影响因子:
2.7
作者:
Bloor, JW;Kiehart, DP
通讯作者:
Kiehart, DP
影响因子:
4
作者:
P. Cohen
通讯作者:
P. Cohen
DOI:
10.1046/j.1365-201x.1998.00447.x
发表时间:
1998-12
期刊:
Acta physiologica Scandinavica
影响因子:
--
作者:
D. Hartshorne
通讯作者:
D. Hartshorne
影响因子:
3.3
作者:
Halsell,SR;Kiehart,DP
通讯作者:
Kiehart,DP
DOI:
10.1242/dev.127.9.1767
发表时间:
2000
期刊:
Development (Cambridge, England)
影响因子:
--
作者:
Foe,VE;Field,CM;Odell,GM
通讯作者:
Odell,GM