The current nomenclature guidelines suggest that members of new CYP families share at least 40% amino acid identity, while members of subfamilies must share at least 55% amino acid identity.
As directrices da nomenclatura actual sinalan que os membros das familias de CYPs comparten >40% de identidade na secuencia de aminoácidos, mentres que os membros das subfamilias deben compartir >55% de identidade de aminoácidos.