Journal
JOURNAL OF PLANT RESEARCH
Volume 130, Issue 3, Pages 475-478Publisher
SPRINGER JAPAN KK
DOI: 10.1007/s10265-016-0895-z
Keywords
Fertilization; Gamete fusion; IZUMO1; JUNO
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Funding
- JSPS KAKENHI [JP26291052]
- Takeda Science Foundation
- Grants-in-Aid for Scientific Research [26291052] Funding Source: KAKEN
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When a spermatozoon fertilizes an oocyte in mammals, there must be an extremely precise regulation system for successful gamete fusion to occur, which is the final step of fertilization. Using gene-modified animals, IZUMO1 on the sperm side and its receptor, JUNO, on the ovum side, have been unveiled as indispensable factors for triggering membrane fusion. We recently analyzed the detailed molecular machinery of the IZUMO1-JUNO recognition system and clarified the tertiary architecture of the IZUMO1-JUNO complex based on the crystal structure. Over the past 2 years, important discoveries have successively emerged, presenting a new perspective on fertilization. In this mini-review, I will initially explain the historical background of the molecular mechanism study of gamete fusion, and go on to describe our latest study data.
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