superfamily

https://doi.org/10.1351/goldbook.13700
Large group of proteins related by structural homology and function. The term also refers to the genes that encode them.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1247 [Terms] [Paper]