Adjective
trans-acting
(genetics) Describing transcription factors that regulate the expression of genes on a different chromosome.
Enhancers main An enhancer is a short region of DNA that can be bound with proteins ( trans-acting factors ), much like a set of transcription factors, to enhance transcription levels of genes in a gene cluster. Source: Internet
In order for this transcription to occur, several pol I-associated factors and DNA-specific trans-acting factors are required. Source: Internet