Proteins
Curated comments from UniProt
| Type | Comment |
|---|---|
| developmental stage | Expressed during pollen development and tube growth. |
| function | Required for male fertility (PubMed:17079265, PubMed:20333238). Plays a role in pollen tube guidance and successful gamete attachment (PubMed:17079265). Essential for the fusion of gametes during double fertilization, where one male gamete fuses with the egg to produce a zygote, and another male gamete fuses with the central cell to produce the endosperm (PubMed:17079265, PubMed:20333238, PubMed:21209845). Mediates the fusion of cell membranes (PubMed:28137780). Not required for pollen tube outgrowth (PubMed:17079265, PubMed:20333238). |
| similarity | Belongs to the HAP2/GCS1 family. |
| subcellular location | Predominantly localized in a perinuclear ring (PubMed:17079265). Redistribution to the cell membrane is mediated by EC1 peptides after their secretion upon sperm arrival (PubMed:23180860). |
| tissue specificity | Expressed only in mature pollen, in the two sperm cells. |
