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- Table of Contents
Facts about Sperm-egg fusion protein Juno.
The ligand-receptor interaction probably does not act as a membrane'fusogen'. Does not bind folate.
| Mouse | |
|---|---|
| Gene Name: | Izumo1r |
| Uniprot: | Q9EQF4 |
| Entrez: | 64931 |

| Belongs to: |
|---|
| folate receptor family |

folate receptor 4 (delta) homolog (mouse); Folbp3; FOLR4; FR-delta; LOC390243; probable folate receptor delta
Mass (kDA):
28.203 kDA

| Mouse | |
|---|---|
| Location: | 9|9 A2 |
| Sequence: | 9; |
Widely expressed with higher expression in thymus, spleen and lung. Present at the cell surface of unfertilized oocytes, while it is barely detectable 30 to 40 minutes after fertilization (at protein level) (PubMed:24739963).


PMID: 11111049 by Spiegelstein O., et al. Identification of two putative novel folate receptor genes in humans and mouse.
PMID: 24739963 by Bianchi E., et al. Juno is the egg Izumo receptor and is essential for mammalian fertilization.