The phosphorylation state of an aurora-like kinase marks the length of growing flagella in Chlamydomonas.
The phosphorylation state of an aurora-like kinase marks the length of growing flagella in Chlamydomonas.
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极光样激酶的磷酸化状态标志着衣藻生长鞭毛的长度
DOI:
10.1016/j.cub.2011.02.046
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发表时间:
2011-04-12
期刊:
影响因子:
9.2
通讯作者:
Pan, Junmin
中科院分区:
文献类型:
--
作者:
Luo, Minna;Cao, Muqing;Kan, Yinan;Li, Guihua;Snell, William;Pan, Junmin
Flagella and cilia are structurally polarized organelles whose lengths are precisely defined, and alterations in length are related to several human disorders. Intraflagellar transport (IFT) and protein signaling molecules are implicated in specifying flagellar/ciliary length, but evidence has been lacking for a flagellum/cilium length sensor that could participate in active length control or establishment of structural polarity. Previously, we showed that the phosphorylation state of the aurora-like protein kinase CALK in Chlamydomonas is a marker of the absence of flagella. Here, we show that CALK phosphorylation state also is a marker for flagellar length. CALK is phosphorylated in cells without flagella, and during flagellar assembly it becomes desphosphorylated. Dephosphorylation is not simply a consequence of initiation of flagellar assembly or of time after experimentally-induced flagellar loss, but requires flagellar assembly to a threshold length. Analysis of cells with flagella of varying lengths shows that the threshold length for CALK dephosphorylation is ~6 µm (half-length). Studies with short and long flagellar mutants indicate that cells detect absolute rather than relative flagellar length. Our results demonstrate that cells possess a mechanism for translating flagellar length into a posttranslational modification of a known flagellar regulatory protein.
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影响因子:
7.8
作者:
Pazour, GJ;Wilkerson, CG;Witman, GB
通讯作者:
Witman, GB
影响因子:
7.8
作者:
Marshall, W F;Rosenbaum, J L
通讯作者:
Rosenbaum, J L
影响因子:
64.5
作者:
HUANG, B;RAMANIS, Z;LUCK, DJL
通讯作者:
LUCK, DJL
DOI:
10.1073/pnas.0408358102
发表时间:
2005-03-08
影响因子:
11.1
作者:
Stolc, V;Samanta, MP;Marshall, WF
通讯作者:
Marshall, WF
影响因子:
7.8
作者:
Baker, E J;Schloss, J A;Rosenbaum, J L
通讯作者:
Rosenbaum, J L