GPCRs, small ligand

G protein–coupled receptors (GPCRs) which are also known as seven-(pass)-transmembrane domain receptors, 7TM receptors, heptahelical receptors, serpentine receptor, and G protein–linked receptors (GPLR), constitute a large protein family of receptors that detect molecules outside the cell and activate internal signal transduction pathways and, ultimately, cellular responses. Coupling with G proteins, they are called seven-transmembrane receptors because they pass through the cell membrane seven times. Source: [https://en.wikipedia.org/wiki/G_protein–coupled_receptor Wikipedia] These small ligand receptors are part of the Rhodopsin-like family of GPCRs. Source: [https://en.wikipedia.org/wiki/Rhodopsin-like_receptors Wikipedia]

G蛋白偶联受体（G protein–coupled receptors，GPCRs），亦称七跨膜结构受体、7TM受体、七螺旋受体、蛇形受体以及G蛋白连接受体（GPLR），构成了一类庞大的蛋白质家族，此类受体能检测细胞外的分子并激活内部信号转导途径，最终引发细胞反应。与G蛋白的偶联作用使得它们被称为七跨膜受体，因为它们穿越细胞膜七次。资料来源：[https://en.wikipedia.org/wiki/G_protein–coupled_receptor Wikipedia]。这些小型配体受体属于视紫红质样GPCRs家族。资料来源：[https://en.wikipedia.org/wiki/Rhodopsin-like_receptors Wikipedia]。