TMEM95 and its homologues can be found in eukaryotes. Proteins in this family are typically between 102 and 231 amino acids in length and they have a conserved LGG sequence motif. TMEM95 is a sperm membrane protein required for sperm-oocyte fusion and is essential for mammalian fertilisation [1,2].

1: Sperm proteins SOF1, TMEM95, and SPACA6 are required for sperm-oocyte fusion in mice. Noda T, Lu Y, Fujihara Y, Oura S, Koyano T, Kobayashi S, Matzuk MM, Ikawa M; Proc Natl Acad Sci U S A. 2020;117:11493-11502. PMID:32393636

2: TMEM95 is a sperm membrane protein essential for mammalian fertilization. Lamas-Toranzo I, Hamze JG, Bianchi E, Fernandez-Fuertes B, Perez-Cerezales S, Laguna-Barraza R, Fernandez-Gonzalez R, Lonergan P, Gutierrez-Adan A, Wright GJ, Jimenez-Movilla M, Bermejo-Alvarez P; Elife. 2020; [Epub ahead of print] PMID:32484434