期刊
CURRENT OPINION IN STRUCTURAL BIOLOGY
卷 55, 期 -, 页码 114-120出版社
CURRENT BIOLOGY LTD
DOI: 10.1016/j.sbi.2019.03.017
关键词
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资金
- National Science Centre, Poland [2017/25/B/NZ7/02788]
- European COST Action (ERNEST) [CA18133]
Molecular switches in GPCRs enable passing the signal from the agonist binding site, usually located close to the extracellular surface, to the intracellular part of the receptor. The switches are usually associated with conserved structural motifs on transmembrane helices (TMs), and they are accompanied by adjacent residues which provide the signal to the central residue in the toggle switch. In case of locks being the molecular switches, they are breaking (permanently or temporarily) upon agonist binding. Cascade action of switches is correlated with influx of water molecules to form a pathway linking both sides of the receptor. The switches remove the hydrophobic barriers and facilitate water movement while water molecules help to rearrange the hydrogen bond network inside the receptor.
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