4620
At promoters that initiate with + 1 GGG , T7 RNAP synthesizes a ladder of poly ( G ) products as a result of slippage of the transcript on the three C residues in the template strand from + 1 to + 3 .
 GENE: T7 RNAP
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: T7 RNAP