Myosin-5, kinesin-1 and myosin-17 cooperate in secretion of fungal chitin synthase.
Myosin-5, kinesin-1 and myosin-17 cooperate in secretion of fungal chitin synthase.
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DOI:
10.1038/emboj.2011.361
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发表时间:
2012-01-04
期刊:
影响因子:
11.4
通讯作者:
Steinberg, Gero
中科院分区:
文献类型:
--
作者:
Schuster, Martin;Treitschke, Steffi;Kilaru, Sreedhar;Molloy, Justin;Harmer, Nicholas J.;Steinberg, Gero
Plant infection by pathogenic fungi requires polarized secretion of enzymes, but little is known about the delivery pathways. Here, we investigate the secretion of cell wall-forming chitin synthases (CHSs) in the corn pathogen Ustilago maydis. We show that peripheral filamentous actin (F-actin) and central microtubules (MTs) form independent tracks for CHSs delivery and both cooperate in cell morphogenesis. The enzyme Mcs1, a CHS that contains a myosin-17 motor domain, is travelling along both MTs and F-actin. This transport is independent of kinesin-3, but mediated by kinesin-1 and myosin-5. Arriving vesicles pause beneath the plasma membrane, but only ∼15% of them get exocytosed and the majority is returned to the cell centre by the motor dynein. Successful exocytosis at the cell tip and, to a lesser extent at the lateral parts of the cell requires the motor domain of Mcs1, which captures and tethers the vesicles prior to secretion. Consistently, Mcs1-bound vesicles transiently bind F-actin but show no motility in vitro. Thus, kinesin-1, myosin-5 and dynein mediate bi-directional motility, whereas myosin-17 introduces a symmetry break that allows polarized secretion.
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DOI:
10.1126/science.1171652
发表时间:
2009-05-08
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Panstruga R;Dodds PN
通讯作者:
Dodds PN
影响因子:
3.6
作者:
Madrid, MP;Di Pietro, A;Roncero, MIG
通讯作者:
Roncero, MIG
影响因子:
48
作者:
Riedl, Julia;Crevenna, Alvaro H.;Wedlich-Soldner, Roland
通讯作者:
Wedlich-Soldner, Roland
影响因子:
5.3
作者:
Desnos, Claire;Huet, Sebastien;Darchen, Francois
通讯作者:
Darchen, Francois
影响因子:
2.7
作者:
Raymond, CK;Pownder, TA;Sexson, SL
通讯作者:
Sexson, SL