9632
Recent work in this laboratory has shown that the gene coding for acetate kinase ( ackA ) in Sinorhizobium meliloti is up - regulated in response to phosphate limitation .
 acetate kinase, ackA
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 acetate kinase, ackA