1275
The Mer1 protein contains the KH motif found in some RNA - binding proteins , and RNA gel mobility shift assays demonstrate that Mer1 binds specifically to MER2 RNA .
 GENE: Mer1 protein; GENE: Mer1; GENE: MER2 RNA
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: Mer1 protein; GENE: Mer1; GENE: MER2 RNA