6368
Deletion of the apeA gene , either with or without deletion of other proteinases ( protease IV and aminopeptidase N ) , did not have any effect on cell growth in the various media tested .
 apeA gene, protease IV, aminopeptidase N
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 apeA gene, protease IV, aminopeptidase N