Receptor-transporting protein (RTP) family members play divergent roles in the functional expression of odorant receptors
文献类型：期刊论文
| 作者 | Yu, Teng1; Su, Xubo1; Pan, Yi1; Zhuang, Hanyi1; Zhuang, Hanyi2; , |
| 刊名 | PLOS ONE
 |
| 出版日期 | 2017 |
| 卷号 | 12期号:6页码:e0179067 |
| ISSN号 | 1932-6203 |
| DOI | 10.1371/journal.pone.0179067 |
| 文献子类 | Article |
| 英文摘要 | Receptor transporting protein (RTP) family members, RTP1S and RTP2, are accessory proteins to mammalian odorant receptors (ORs). They are expressed in the olfactory sensory neurons and facilitate OR trafficking to the cell-surface membrane and ligand-induced responses in heterologous cells. We previously identified different domains in RTP1S that are important for different stages of OR trafficking, odorant-mediated responses, and interaction with ORs. However, the exact roles of RTP2 and the significance of the requirement of the seemingly redundant co-expression of the two RTP proteins in vivo have received less attention in the past. Here we attempted to dissect the functional differences between RTP1S and RTP2 using a HEK293T cell-based OR heterologous expression system. When a set of 24 ORs were tested against 28 cognate ligands, unlike RTP1S, which always showed a robust ability to support odorant-mediated responses, RTP2 had little or no effect on OR responses and exhibited a suppressive effect over that of RTP1S for a subset of the ORs tested. RTP1S and RTP2 showed no significant difference in OR ligand selectivity and co-transfection with RTP2 increased the detection threshold for some ORs. A protein-protein interaction analysis showed positive interactions among OR, RTP1S, and RTP2, corroborating the functional linkages among the three molecules. Finally, further cell-surface and permeabilized immunocytochemical studies revealed that OR and the co-expressed RTP1S proteins were retained in the Golgi when co-transfected with RTP2, indicating that RTP1S and RTP2 could play different roles in the OR trafficking process. By examining the functional differentiations between the two RTP family members, we provided a molecular level explanation to the suppressive effect exerted by RTP2, shedding light on the divergent mechanisms underlying the RTP proteins in regulating the functional expression of ORs. |
| 学科主题 | Science & Technology - Other Topics |
| WOS关键词 | OLFACTORY RECEPTOR ; MULTIGENE FAMILY ; TASTE RECEPTORS ; LIGANDS ; REPERTOIRE ; ACTIVATION ; RETENTION ; COPPER ; MOUSE ; STEPS |
| 语种 | 英语 |
| WOS记录号 | WOS:000402875700045 |
| 出版者 | PUBLIC LIBRARY SCIENCE |
| 版本 | 出版稿 |
| 源URL | [http://202.127.25.144/handle/331004/1072]  |
| 专题 | 中国科学院上海生命科学研究院营养科学研究所 |
| 作者单位 | 1.Shanghai Jiao Tong Univ, Sch Med, Chinese Minist Educ, Dept Pathophysiol,Key Lab Cell Differentiat & Apo, Shanghai, Peoples R China; 2.Shanghai Jiao Tong Univ, Inst Hlth Sci, Sch Med, Shanghai Inst Biol Sci,Chinese Acad Sci, Shanghai, Peoples R China, |
| 推荐引用方式 GB/T 7714 | Yu, Teng,Su, Xubo,Pan, Yi,et al. Receptor-transporting protein (RTP) family members play divergent roles in the functional expression of odorant receptors[J]. PLOS ONE,2017,12(6):e0179067. |
| APA | Yu, Teng,Su, Xubo,Pan, Yi,Zhuang, Hanyi,Zhuang, Hanyi,&,.(2017).Receptor-transporting protein (RTP) family members play divergent roles in the functional expression of odorant receptors.PLOS ONE,12(6),e0179067. |
| MLA | Yu, Teng,et al."Receptor-transporting protein (RTP) family members play divergent roles in the functional expression of odorant receptors".PLOS ONE 12.6(2017):e0179067. |
入库方式： OAI收割
来源：上海营养与健康研究所
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