POD1-SUN-CRT3 chaperone complex guards the ER sorting of LRR receptor kinases in Arabidopsis.
POD1-SUN-CRT3 chaperone complex guards the ER sorting of LRR receptor kinases in Arabidopsis.
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POD1-SUN-CRT3 伴侣复合物保护拟南芥中 LRR 受体激酶的 ER 分选
DOI:
10.1038/s41467-022-30179-w
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发表时间:
2022-05-16
影响因子:
16.6
通讯作者:
Yang WC
中科院分区:
文献类型:
--
作者:
Xue Y;Meng JG;Jia PF;Zhang ZR;Li HJ;Yang WC
Protein sorting in the secretory pathway is essential for cellular compartmentalization and homeostasis in eukaryotic cells. The endoplasmic reticulum (ER) is the biosynthetic and folding factory of secretory cargo proteins. The cargo transport from the ER to the Golgi is highly selective, but the molecular mechanism for the sorting specificity is unclear. Here, we report that three ER membrane localized proteins, SUN3, SUN4 and SUN5, regulate ER sorting of leucine-rich repeat receptor kinases (LRR-RKs) to the plasma membrane. The triple mutant sun3/4/5 displays mis-sorting of these cargo proteins to acidic compartments and therefore impairs the growth of pollen tubes and the whole plant. Furthermore, the extracellular LRR domain of LRR-RKs is responsible for the correct sorting. Together, this study reports a mechanism that is important for the sorting of cell surface receptors. Cargo transport from the ER to the Golgi is highly selective. Here the authors identify three secretory pathway localized proteins that regulate ER sorting of receptor kinases in Arabidopsis and are required to support pollen tube growth.
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影响因子:
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通讯作者:
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