4467
In contrast , an N - terminal RNAP mutant that has a decreased capacity to bind single - stranded RNA forms halted complexes with much lower levels of stability than the WT enzyme , and these complexes are not stabilized by the presence of the NT strand .
 GENE: N - terminal RNAP mutant
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: N - terminal RNAP mutant