Fold (a.1): Globin-like [46457]
Superfamily (a.1.1): Globin-like [46458]
Family (a.1.1.1): Truncated hemoglobin [46459]
Family (a.1.1.2): Globins [46463]
Family (a.1.1.3): Phycocyanin-like phycobilisome proteins [46532]
Family (a.1.1.4): Nerve tissue mini-hemoglobin (neural globin) [74660]