1580
The pcaR regulatory locus has been found to be required for both induction of all of the genes within the pca regulon ( pcaBDC , pcaIJ , and pcaF ) and the chemotactic response of the bacteria to aromatic compounds .
 GENE: pcaR regulatory locus; GENE: pca regulon; GENE: pcaBDC; GENE: pcaIJ; GENE: pcaF
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: pcaR regulatory locus; GENE: pca regulon; GENE: pcaBDC; GENE: pcaIJ; GENE: pcaF