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twin transmembrane helix small protein Members of the seed alignment for this family are small (average length 68 residues), strictly bacterial, and extremely hydrophobic. Pfam model PF04588 (HIG_1_N) includes both eukaryotic proteins, including a protein from the fish Gillichthys mirabilis, and the members of this family. Similarity between those eukaryotic proteins and the members o this model may represent convergent evolution related to the similar composition of their transmembrane alpha-helical regions, rather than a common origin or common function. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",