su·per·fam·i·ly 'sü-pər-.fam-(ə-)lē n, pl -lies
1) a category of taxonomic classification between a family and an order or a suborder
2) a large group of closely related molecules or chemical compounds usu. possessing a similar function

* * *

su·per·fam·i·ly (sooґpər-fam″ĭ-le) 1. a taxonomic category that is sometimes used, subordinate to an order and superior to a family. 2. a group of proteins having similarities such as areas of structural homology and believed to descend from the same ancestral gene; e.g., integrins and immunoglobulins.

Medical dictionary. 2011.

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