UBA domain protein SUF1 interacts with NatA-complex subunit NAA15 to regulate thermotolerance in Arabidopsis  

作　　者：Ze-Ting Song Xiao-Jie Chen Ling Luo Feifei Yu Jian-Xiang Liu Jia-Jia Han 

机构地区：[1]State Key Laboratory of Plant Physiology and Biochemistry,College of Life Sciences,Zhejiang University,Hangzhou 310027,China [2]Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology,Institute of Biodiversity,School of Ecology and Environmental Science,Yunnan University,Kunming 650500,China [3]Laboratory of Ecology and Evolutionary Biology,State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan,Yunnan University,Kunming 650500,China [4]College of Grassland Science and Technology,China Agricultural University,Beijing 100083,China

出　　处：《Journal of Integrative Plant Biology》2022年第7期1297-1302,共6页植物学报（英文版）

基　　金：financially supported by grants from the National Natural Science Foundation of China(Nos 31625004and 31970287);the Zhejiang Provincial Talent Program(No.2019R52005)。

摘　　要：During recovery from heat stress,plants clear away the heat-stress-induced misfolded proteins through the ubiquitin-proteasome system(UPS).In the UPS,the recognition of substrate proteins by E3 ligase can be regulated by the N-terminal acetyltransferase A(NatA)complex.Here,we determined that Arabidopsis STRESS-RELATED UBIQUITIN-ASSOCIATED-DOMAIN PROTEIN FACTOR 1(SUF1)interacts with the NatA complex core subunit NAA15 and positively regulates NAA15.The suf1 and naa15 mutants are sensitive to heat stress;the NatA substrate NSNC1 is stabilized in suf1 mutant plants during heat stress recovery.Therefore,SUF1 and its interactor NAA15 play important roles in basal thermotolerance in Arabidopsis.

关 键 词：basal thermotolerance heat stress NAA15 NatA complex SUF1 UBA-domain protein 

分 类 号：Q945[生物学—植物学]