期刊
RSC ADVANCES
卷 12, 期 12, 页码 7352-7356出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ra00604a
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资金
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [267205415/CRC 1208]
The plant ethylene receptor ETR1 is crucial in perception and transmission of ethylene signals, especially in processes like ripening and abscission. However, the structural knowledge about its transmembrane sensor domain (TMD) is limited, leading to a combination of experimental and computational approaches to study and validate its structure.
The plant ethylene receptor ETR1 is a key player in the perception of the phytohormone and subsequent downstream ethylene signal transmission, crucial for processes such as ripening, senescence and abscission. However, to date, there is sparse structural knowledge about the transmembrane sensor domain (TMD) of ETR1 that is responsible for the binding of the plant hormone and initiates the downstream signal transmission. Sequence information and ab initio modelling suggest that the TMD consists of three transmembrane helices. Here, we combined site-directed spin labelling with electron paramagnetic resonance spectroscopy and obtained distance restraints for liposome-reconstituted ETR1_TMD on the orientation and arrangement of the transmembrane helices. We used these data to scrutinize different computational structure predictions of the TMD.
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