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- W4214902007 abstract "ADF/cofilin is a central regulator of actin dynamics. We previously demonstrated that two closely related Arabidopsis class IIa ADF isovariants, ADF7 and ADF10, are involved in the enhancement of actin turnover in pollen, but whether they have distinct functions remains unknown. Here, we further demonstrate that they exhibit distinct functions in regulating actin turnover both in vitro and in vivo. We found that ADF7 binds to ADP-G-actin with lower affinity, and severs and depolymerizes actin filaments less efficiently in vitro than ADF10. Accordingly, in pollen grains, ADF7 more extensively decorates actin filaments and is less freely distributed in the cytoplasm compared to ADF10. We further demonstrate that ADF7 and ADF10 show distinct intracellular localizations during pollen germination, and they have non-equivalent functions in promoting actin turnover in pollen. We thus propose that cooperation and labor division of ADF7 and ADF10 enable pollen cells to achieve exquisite control of the turnover of different actin structures to meet different cellular needs." @default.
- W4214902007 created "2022-03-05" @default.
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- W4214902007 date "2022-03-14" @default.
- W4214902007 modified "2023-10-18" @default.
- W4214902007 title "Functional non‐equivalence of pollen <scp>ADF</scp> isovariants in Arabidopsis" @default.
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- W4214902007 doi "https://doi.org/10.1111/tpj.15723" @default.
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