4722
Finally , the conservation of the two residues most sensitive to mutations ( Y949 and Y953 ) in TM11 , and in the homologous TM5 , of all mammalian P - gps and also in other ABC transporters , suggests that these residues and domains may play an important role in structural as well as mechanistic aspects common to this family of proteins .
 GENE: mammalian P - gps; GENE: ABC transporters
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: mammalian P - gps; GENE: ABC transporters