| ara | 1. <prefix> Prefix for arabinose or arabinosyl. 2. <ornithology> A name of the great blue and yellow macaw (Ara ararauna), native of South America. 3. <astronomy> The Altar; a southern constellation, south of the tail of the Scorpion. Source: Websters Dictionary (01 Mar 1998) |
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| ara operon | <biochemistry, molecular biology> Operons involved in arabinose metabolism, especially. The araBAD operon of E. Coli.Two other ara operons are known in E. Coli. (18 Nov 1997) |